1
|
Hyun HJ, Park HK, Kim HO, Park H, Aihara H, Arinstein K, Aushev T, Bakich AM, Barberio E, Bay A, Belous K, Bischofberger M, Bondar A, Bozek A, Bracko M, Chang MC, Chang P, Chao Y, Chen A, Chen P, Cheon BG, Cho IS, Choi Y, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Gabyshev N, Golob B, Ha H, Hara T, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Inami K, Iwasaki Y, Joshi NJ, Kah DH, Kang JH, Kapusta P, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim JH, Kim MJ, Ko BR, Kodys P, Krizan P, Kuzmin A, Kwon YJ, Kyeong SH, Lange JS, Lee SH, Li J, Liventsev D, Louvot R, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Nakano E, Nakazawa H, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Olsen SL, Palka H, Park CW, Pestotnik R, Petric M, Piilonen LE, Ryu S, Sahoo H, Sakai Y, Schneider O, Sevior ME, Shapkin M, Shiu JG, Shwartz B, Singh JB, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Wang XL, Wedd R, Won E, Yabsley BD, Yamashita Y, Zhang ZP, Zhilich V, Zyukova O. Search for a low mass particle decaying into μ+ μ- in B0 → K*0 X and B0 → ρ0 X at Belle. Phys Rev Lett 2010; 105:091801. [PMID: 20868151 DOI: 10.1103/physrevlett.105.091801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2010] [Indexed: 05/29/2023]
Abstract
We search for dimuon decays of a low mass particle in the decays B0→K*0 X and B0→ρ0 X using a data sample of 657×10(6)BB events collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. We find no evidence for such a particle in the mass range from 212 MeV/c2 to 300 MeV/c2 for lifetimes below 10(-12) s, and set upper limits on its branching fractions. In particular, we search for a particle with a mass of 214.3 MeV/c2 reported by the HyperCP experiment, and obtain upper limits on the products B(B0→K*0 X)×B(X→μ+ μ- )<2.26(2.27)×10(-8) and B(B0→ρ0 X)×B(X→μ+ μ-)<1.73(1.73)×10(-8) at 90% C.L. for a scalar (vector) X particle.
Collapse
Affiliation(s)
- H J Hyun
- Kyungpook National University, Taegu
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
2
|
Louvot R, Schneider O, Aushev T, Arinstein K, Bakich AM, Balagura V, Barberio E, Bay A, Belous K, Bischofberger M, Bondar A, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen P, Cheon BG, Chiang CC, Cho IS, Choi Y, Danilov M, Dash M, Drutskoy A, Eidelman S, Goldenzweig P, Golob B, Ha H, Haba J, Hara T, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Itoh R, Iwabuchi M, Iwasaki M, Iwasaki Y, Joshi NJ, Kah DH, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kiesling C, Kim HJ, Kim HO, Kim JH, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kodys P, Korpar S, Krizan P, Krokovny P, Kumita T, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SH, Li J, Liu C, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Nakao M, Nakazawa H, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Pakhlova G, Palka H, Park H, Park HK, Pestotnik R, Petric M, Piilonen LE, Poluektov A, Prim M, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Singh JB, Smerkol P, Sokolov A, Stanic S, Staric M, Sumiyoshi T, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Wicht J, Won E, Yabsley BD, Yamashita Y, Zhang ZP, Zivko T, Zyukova O. Observation of B(s)(0) → D(s)(*-) π+ and B(s)(0) → D(s)(*-) ρ+ and measurement of the B(s)(0) → D(s)(*-) ρ+ longitudinal polarization fraction. Phys Rev Lett 2010; 104:231801. [PMID: 20867227 DOI: 10.1103/physrevlett.104.231801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2010] [Indexed: 05/29/2023]
Abstract
First observations of the B(s)(0) → D(s)(*-) π+, B(s)(0) → D(s)(-) ρ+ and B(s)(0) → D(s)(*-) ρ+ decays are reported together with measurements of their branching fractions: B(B(s)(0) → D(s)(*-) π+) = [2.4(-0.4)(+0.5)(stat) ± 0.3(syst) ± 0.4(f(s))]×10(-3), B(B(s)(0) → D(s)(-) ρ+) = [8.5(-1.2)(+1.3)(stat) ± 1.1(syst) ± 1.3(f(s))]×10(-3) and B(B(s)(0) → D(s)(*-) ρ+) = [11.9(-2.0)(+2.2)(stat) ± 1.7(syst) ± 1.8(f(s))]×10(-3) (f(s) = N(B(s)(*) B(s)(*))/N(bb)). From helicity-angle distributions, we measured the longitudinal polarization fraction in B(s)(0) → D(s)(*-) ρ+ decays to be f(L)(B(s)(0) → D(s)(*-) ρ+) = 1.05(-0.10)(+0.08)(stat)(-0.04)(+0.03)(syst). These results are based on a 23.6 fb(-1) data sample collected at the Υ(5S) resonance with the Belle detector at the KEKB e+ e- collider.
Collapse
Affiliation(s)
- R Louvot
- Ecole Polytechnique Fédérale de Lausanne, Lausanne
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
3
|
Ko BR, Won E, Aihara H, Aulchenko V, Aushev T, Bakich AM, Balagura V, Barberio E, Belous K, Bhardwaj V, Bischofberger M, Bozek A, Bracko M, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Cho IS, Choi Y, Dalseno J, Das A, Dolezal Z, Drutskoy A, Eidelman S, Goldenzweig P, Golob B, Ha H, Hara T, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Itoh R, Iwabuchi M, Iwasaki M, Joshi NJ, Kah DH, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kim HO, Kim YJ, Korpar S, Krizan P, Krokovny P, Kuhr T, Kumita T, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SH, Li J, Liu C, Liu Y, Liventsev D, Louvot R, Matyja A, McOnie S, Miyata H, Mizuk R, Nakano E, Nakao M, Natkaniec Z, Neubauer S, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ostrowicz W, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park HK, Pestotnik R, Petric M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Singh JB, Smerkol P, Sokolov A, Solovieva E, Stanic S, Staric M, Sumiyoshi T, Tanaka M, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Yabsley BD, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zivko T, Zupanc A, Zyukova O. Search for CP violation in the decays D(s)+ --> KS0pi+ and D(s)+ --> KS0K+. Phys Rev Lett 2010; 104:181602. [PMID: 20482167 DOI: 10.1103/physrevlett.104.181602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2010] [Indexed: 05/29/2023]
Abstract
We have searched for CP violation in the charmed meson decays D((s))(+) --> K(S)(0)pi(+) and D((s))(+) --> K(S)(0)K(+) using 673 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. No evidence for CP violation is observed. We report the most sensitive CP asymmetry measurements to date for these decays: A(CP)(D(+)-->K(S)(0)pi(+)) = (-0.71 +/- 0.19 +/- 0.20)%, A(CP)(D(s)(+) --> K(S)(0)pi(+)) = (+5.45 +/- 2.50 +/- 0.33)%, A(CP)(D(+) --> K(S)(0)K(+)) = (-0.16 +/- 0.58 +/- 0.25)%, and A(CP)(D(s)(+) --> K(S)(0)K(+)) = (+0.12 +/- 0.36 +/- 0.22)%, where the first uncertainties are statistical and the second are systematic.
Collapse
|
4
|
Ko BR, Won E, Aihara H, Arinstein K, Aushev T, Bakich AM, Balagura V, Barberio E, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chen A, Cheon BG, Cho IS, Choi Y, Drutskoy A, Dungel W, Eidelman S, Gabyshev N, Goldenzweig P, Golob B, Ha H, Haba J, Han BY, Hayasaka K, Hayashii H, Hoshi Y, Hou WS, Hyun HJ, Itoh R, Iwasaki M, Kah DH, Kang JH, Kapusta P, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim SK, Kim YI, Kim YJ, Kinoshita K, Korpar S, Krokovny P, Kuzmin A, Kwon YJ, Kyeong SH, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Liu C, Liu Y, Liventsev D, Louvot R, Macnaughton J, Mandl F, McOnie S, Medvedeva T, Miyata H, Miyazaki Y, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park HK, Park KS, Pestotnik R, Piilonen LE, Sahoo H, Sakai K, Sakai Y, Schneider O, Schwanda C, Sekiya A, Senyo K, Sevior ME, Shapkin M, Shen CP, Shiu JG, Shwartz B, Stanic S, Staric M, Sumiyoshi T, Tanaka M, Taylor GN, Teramoto Y, Trebelsi K, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CC, Wang CH, Wang P, Wang XL, Watanabe Y, Wedd R, Yabsley BD, Yamashita Y, Zhang ZP, Zhilich V, Zivko T, Zupanc A, Zyukova O. Observation of the doubly cabibbo-suppressed decay D_{s};{+}-->K;{+}K;{+}pi;{-}. Phys Rev Lett 2009; 102:221802. [PMID: 19658854 DOI: 10.1103/physrevlett.102.221802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2009] [Indexed: 05/28/2023]
Abstract
We report the first observation of the doubly Cabibbo-suppressed decay D_{s};{+}-->K;{+}K;{+}pi;{-} using 605 fb;{-1} of data collected with the Belle detector at the KEKB asymmetric-energy e;{+}e;{-} collider. The branching ratio with respect to its Cabibbo-favored counterpart B(D_{s};{+}-->K;{+}K;{+}pi;{-})/B(D_{s};{+}-->K;{+}K;{-}pi;{+}) is (0.229+/-0.028+/-0.012)%, where the first uncertainty is statistical and the second is systematic. We also report a significantly improved measurement of the doubly Cabibbo-suppressed decay D;{+}-->K;{+}pi;{+}pi;{-}, with a branching ratio B(D;{+}-->K;{+}pi;{+}pi;{-})/B(D;{+}-->K;{-}pi;{+}pi;{+})=(0.569+/-0.018+/-0.014)%.
Collapse
|
5
|
Goldenzweig P, Schwartz AJ, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Bay A, Bedny I, Bhardwaj V, Bitenc U, Bondar A, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Cheon BG, Chiang CC, Chistov R, Cho IS, Choi Y, Dalseno J, Dash M, Drutskoy A, Eidelman S, Golob B, Ha H, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Ishino H, Iwasaki M, Kah DH, Kang JH, Kawasaki T, Kichimi H, Kim HJ, Kim SK, Kim YI, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuzmin A, Kwon YJ, Kyeong SH, Lange JS, Lee JS, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Lin SW, Liu C, Liu Y, MacNaughton J, Mandl F, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Nagamine T, Nakano E, Nakao M, Nakazawa H, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park HK, Peak LS, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Schneider O, Schümann J, Schwanda C, Seidl R, Sekiya A, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Singh JB, Somov A, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Tamura N, Tanaka M, Teramoto Y, Tikhomirov I, Trabelsi K, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Vervink K, Wang CC, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Wedd R, Wicht J, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Zhang CC, Zhang ZP, Zhulanov V, Zivko T, Zupanc A, Zyukova O. Evidence for neutral B meson decays to omegaK*0. Phys Rev Lett 2008; 101:231801. [PMID: 19113539 DOI: 10.1103/physrevlett.101.231801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2008] [Indexed: 05/27/2023]
Abstract
We present the results of a study of the charmless vector-vector decay B0-->omegaK*0 with 657 x 10(6) BB pairs collected with the Belle detector at the KEKB e+e- collider. We measure the branching fraction to be B(B0-->omegaK*0) = [1.8+/-0.7(stat)+/-0.3(syst)]x 10(-6) with 3.0sigma significance. We also perform a helicity analysis of the omega and K*0 vector mesons, and obtain the longitudinal polarization fraction fL(B0-->omegaK*0) = 0.56+/-0.29(stat) -0.08(+0.18)(syst). Finally, we measure a large nonresonant branching fraction B[B0-->omegaK+pi(-);M Kpi in(0.755,1.250) GeV/c2] = [5.1+/-0.7(stat)+/-0.7(syst)]x 10(-6) with a significance of 9.5sigma.
Collapse
Affiliation(s)
- P Goldenzweig
- University of Cincinnati, Cincinnati, Ohio 45221, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
6
|
Pakhlova G, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Bakich AM, Balagura V, Bedny I, Bhardwaj V, Bitenc U, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chen A, Cheon BG, Chiang CC, Chistov R, Cho IS, Choi SK, Choi Y, Dalseno J, Danilov M, Dash M, Eidelman S, Gabyshev N, Ha H, Haba J, Hayasaka K, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kah DH, Kang JH, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim SK, Kim YI, Kim YJ, Kinoshita K, Krizan P, Krokovny P, Kumar R, Kuzmin A, Kwon YJ, Kyeong SH, Lange JS, Lee JS, Lee SE, Lesiak T, Li J, Limosani A, Liu C, Liventsev D, Mandl F, Matyja A, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Palka H, Park CW, Park H, Park HK, Peak LS, Piilonen LE, Poluektov A, Sahoo H, Sakai Y, Schneider O, Senyo K, Shapkin M, Shen CP, Shiu JG, Shwartz B, Singh JB, Sokolov A, Stanic S, Staric M, Sumiyoshi T, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Wedd R, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Yuan CZ, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zivko T, Zupanc A, Zyukova O. Observation of a near-threshold enhancement in the e+e- -->Lambda+_(c)Lambda-_(c) cross section using initial-state radiation. Phys Rev Lett 2008; 101:172001. [PMID: 18999743 DOI: 10.1103/physrevlett.101.172001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2008] [Indexed: 05/27/2023]
Abstract
We report a measurement of the exclusive e+ e- -->Lambda+_(c)Lambda-_(c) cross section as a function of center-of-mass energy near the Lambda+_(c)Lambda-_(c) threshold. A clear peak with a significance of 8.2sigma is observed in the Lambda+_(c)Lambda-_(c) invariant mass distribution just above threshold. With an assumption of a resonance origin for the observed peak, a mass and width of M=[4634 (+8)_(-7)(stat)(+5)_(-8)(syst)] MeV/c(2) and Gamma_(tot)=[92 (+40)_(-24)(stat)(+10)_(-21)(syst)] MeV are determined. The analysis is based on a study of events with initial-state-radiation photons in a data sample collected with the Belle detector at the Upsilon(4S) resonance and nearby continuum with an integrated luminosity of 695 fb(-1) at the KEKB asymmetric-energy e+ e- collider.
Collapse
Affiliation(s)
- G Pakhlova
- Institute for Theoretical and Experimental Physics, Moscow
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Chen JH, Wang MZ, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Bakich AM, Balagura V, Barberio E, Bay A, Bedny I, Belous K, Bitenc U, Bondar A, Bozek A, Bracko M, Browder TE, Chang MC, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Cho IS, Choi SK, Choi Y, Dalseno J, Dash M, Drutskoy A, Eidelman S, Golob B, Ha H, Haba J, Hara T, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Joshi NJ, Kah DH, Kaji H, Kapusta P, Katayama N, Kawasaki T, Kichimi H, Kim HJ, Kim SK, Kim YJ, Kinoshita K, Krokovny P, Kumar R, Kuo CC, Kwon YJ, Lee JS, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Liu C, Liventsev D, Mandl F, Matyja A, McOnie S, Medvedeva T, Mitaroff W, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Peak LS, Pestotnik R, Piilonen LE, Rozanska M, Sahoo H, Sakai Y, Schneider O, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibuya H, Shiu JG, Singh JB, Somov A, Stanic S, Staric M, Sumiyoshi T, Takasaki F, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Trabelsi K, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Vervink K, Villa S, Vinokurova A, Wang CC, Wang CH, Wang P, Wang XL, Watanabe Y, Wedd R, Won E, Yamamoto H, Yamashita Y, Zhang CC, Zhang ZP, Zhulanov V, Zupanc A. Observation of B{0}-->ppK*0 with a large K*0 polarization. Phys Rev Lett 2008; 100:251801. [PMID: 18643652 DOI: 10.1103/physrevlett.100.251801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2008] [Indexed: 05/26/2023]
Abstract
Using a 492 fb{-1} data sample collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e{+}e{-} collider, we observe the decay B{0}-->ppK*0 with a branching fraction of (1.18{-0.25}{+0.29}(stat)+/-0.11(syst))x10{-6}. We study the decay dynamics of B{0}-->ppK*0 and compare with B{+}-->ppK*+. The K*0 meson is found to be almost 100% polarized (with a fraction of (101+/-13+/-3)% in the helicity zero state), while the K*+ meson has a (32+/-17+/-9)% fraction in the helicity zero state. The direct CP asymmetries for B{0}-->ppK*0 and B{+}-->ppK*+ are measured to be -0.08+/-0.20+/-0.02 and -0.01+/-0.19+/-0.02, respectively. In addition, we report improved measurements of the branching fractions B(B{+}-->ppK*+)=(3.38{-0.60}{+0.73}+/-0.39)x10{-6} and B(B{0}-->ppK{0})=(2.51{-0.29}{+0.35}+/-0.21)x10{-6}, which supersede our previous measurements.
Collapse
Affiliation(s)
- J-H Chen
- Department of Physics, National Taiwan University, Taipei
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Widhalm L, Adachi I, Aihara H, Aushev T, Bakich AM, Balagura V, Barberio E, Bay A, Bedny I, Bhardwaj V, Bitenc U, Blyth S, Bozek A, Bracko M, Brodzicka J, Browder TE, Chao Y, Chen A, Chen WT, Cheon BG, Chistov R, Cho IS, Choi Y, Dalseno J, Dash M, Drutskoy A, Eidelman S, Goldenzweig P, Golob B, Ha H, Haba J, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kah DH, Kang JH, Kapusta P, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kuroki Y, Kuzmin A, Kwon YJ, Lee J, Lee JS, Lee MJ, Lee SE, Lesiak T, Lin SW, Liu C, Liventsev D, Mandl F, Matyja A, McOnie S, Mitaroff W, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Moloney GR, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okuno S, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park KS, Peak LS, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Schneider O, Seidl R, Sekiya A, Senyo K, Shapkin M, Shibuya H, Shiu JG, Singh JB, Somov A, Stanic S, Staric M, Sumiyoshi T, Suzuki SY, Takasaki F, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Trabelsi K, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Vervink K, Wang CH, Wang MZ, Wang P, Watanabe Y, Wedd R, Won E, Yabsley BD, Yamamoto H, Yamashita Y, Zhang ZP, Zhilich V, Zupanc A, Zyukova O. Measurement of B(Ds{+}-->mu+nu(mu)). Phys Rev Lett 2008; 100:241801. [PMID: 18643570 DOI: 10.1103/physrevlett.100.241801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2008] [Indexed: 05/26/2023]
Abstract
We present a measurement of the branching fraction B(D{s}{+}-->mu{+}nu{mu}) using a 548 fb{-1} data sample collected by the Belle experiment at the KEKB e{+}e{-} collider. The D{s} momentum is determined by reconstruction of the system recoiling against DKgammaX in events of the type e{+}e{-}-->D{s}{*}DKX, D{s}{*}-->D{s}gamma, where X represents additional pions or photons from fragmentation. This full-reconstruction method provides high resolution in the neutrino momentum and thus good background separation, equivalent to that achieved by experiments at the tau-charm factories. We obtain the branching fraction B(D{s}{+}-->mu{+}nu{mu})=[6.44+/-0.76(stat)+/-0.57(syst)]x10{-3}, implying a D{s} decay constant of f{D{s}}=[275+/-16(stat)+/-12(syst)] MeV.
Collapse
Affiliation(s)
- L Widhalm
- Institute of High Energy Physics, Vienna
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Pakhlov P, Adachi I, Aihara H, Arinstein K, Aushev T, Aziz T, Bakich AM, Balagura V, Barberio E, Bedny I, Belous K, Bhardwaj V, Bitenc U, Bondar A, Bozek A, Bracko M, Browder TE, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi Y, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Golob B, Ha H, Hayasaka K, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ikado K, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kah DH, Kang JH, Kapusta P, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kwon YJ, Lange JS, Lee MJ, Lee SE, Lesiak T, Limosani A, Lin SW, Liu Y, Liventsev D, Mandl F, Matyja A, Medvedeva T, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Moloney GR, Mori T, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlova G, Palka H, Park CW, Peak LS, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Schneider O, Seidl R, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibuya H, Shiu JG, Singh JB, Somov A, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Vervink K, Wang CH, Wang P, Wang XL, Watanabe Y, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Yuan CZ, Zhang CC, Zhang ZP, Zhilich V, Zupanc A, Zyukova O. Production of new charmoniumlike states in e+e- -->J/psiD*D[over](*) at sqrt[s] approximately 10.6 GeV. Phys Rev Lett 2008; 100:202001. [PMID: 18518525 DOI: 10.1103/physrevlett.100.202001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2007] [Indexed: 05/26/2023]
Abstract
We report a study of the processes e+e- -->J/psiD*D[over](*). In J/psiD*D[over]* we observe a significant enhancement in the D*D[over]* invariant mass spectrum, which we interpret as a new charmoniumlike state and denote X(4160). The X(4160) parameters are M=(4156(-20)+25+/-15) MeV/c2 and Gamma=(139(-61)+111+/-21) MeV. We also report a new measurement of the X(3940) mass and width: M=(3942(-6)+7+/-6) MeV/c2 and Gamma=(37(-15)+26+/-8) MeV. The analysis is based on a 693 fb(-1) data sample recorded near the Upsilon(4S) resonance by the Belle detector at the KEKB asymmetric-energy collider.
Collapse
Affiliation(s)
- P Pakhlov
- Institute for Theoretical and Experimental Physics, Moscow
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Sahoo H, Browder TE, Trabelsi K, Adachi I, Aihara H, Arinstein K, Aushev T, Bahinipati S, Bakich AM, Balagura V, Barberio E, Bay A, Bedny I, Belous K, Bitenc U, Bondar A, Bozek A, Bračko M, Chang MC, Chao Y, Chen A, Chen WT, Cheon BG, Chistov R, Cho IS, Choi Y, Dalseno J, Dash M, Drutskoy A, Eidelman S, Golob B, Ha H, Haba J, Hara K, Hara T, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Joshi NJ, Kah DH, Kang JH, Kapusta P, Katayama N, Kichimi H, Kim HJ, Kim YJ, Kinoshita K, Korpar S, Kozakai Y, Križan P, Krokovny P, Kumar R, Kuo CC, Kuroki Y, Kwon YJ, Lee JS, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Liventsev D, Mandl F, Matyja A, McOnie S, Medvedeva T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Moloney GR, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Peak LS, Pestotnik R, Piilonen LE, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibuya H, Shiu JG, Shwartz B, Somov A, Stanič S, Starič M, Sumisawa K, Sumiyoshi T, Takasaki F, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Uehara S, Ueno K, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Vervink K, Villa S, Wang CH, Wang P, Wang XL, Watanabe Y, Wedd R, Won E, Yamamoto H, Yamashita Y, Zhang CC, Zhang ZP, Zhulanov V, Zupanc A. Measurements of time-dependentCPviolation inB0→ψ(2S)KS0decays. Int J Clin Exp Med 2008. [DOI: 10.1103/physrevd.77.091103] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
11
|
Wicht J, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Bakich AM, Balagura V, Bay A, Belous K, Bhardwaj V, Bitenc U, Bondar A, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Cho IS, Choi Y, Dalseno J, Dash M, Drutskoy A, Eidelman S, Gabyshev N, Goldenzweig P, Golob B, Haba J, Hayasaka K, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki Y, Kah DH, Kaji H, Kang JH, Kapusta P, Kawai H, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Kumar R, Kuo CC, Kwon YJ, Lange JS, Lee J, Lee JS, Lee SE, Lesiak T, Limosani A, Lin SW, Liu Y, Liventsev D, Mandl F, McOnie S, Medvedeva T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mohapatra D, Moloney GR, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okuno S, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park KS, Pestotnik R, Piilonen LE, Sakai Y, Schneider O, Schümann J, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shibuya H, Shiu JG, Shwartz B, Singh JB, Somov A, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Trabelsi K, Tsuboyama T, Uehara S, Ueno K, Unno Y, Uno S, Ushiroda Y, Usov Y, Varner G, Vervink K, Villa S, Wang CH, Wang P, Wang XL, Watanabe Y, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Yusa Y, Zhang ZP, Zhilich V, Zupanc A, Zwahlen N. Observation of B_(s)(0)-->phigamma and search for B_(s)(0)-->gammagamma decays at Belle. Phys Rev Lett 2008; 100:121801. [PMID: 18517854 DOI: 10.1103/physrevlett.100.121801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Indexed: 05/26/2023]
Abstract
We search for the radiative penguin decays B_{s}{0}-->varphigamma and B_{s}{0}-->gammagamma in a 23.6 fb{-1} data sample collected at the Upsilon(5S) resonance with the Belle detector at the KEKB e{+}e{-} asymmetric-energy collider. We observe for the first time a radiative penguin decay of the B_{s}{0} meson in the B_{s}{0}-->varphigamma mode and we measure B(B_{s}{0}-->varphigamma)=(57_{-15}{+18}(stat)-11+12(syst))x10{-6}. No significant B_{s}{0}-->gammagamma signal is observed and we set a 90% confidence level upper limit of B(B_{s}{0}-->gammagamma)<8.7x10{-6}.
Collapse
Affiliation(s)
- J Wicht
- Budker Institute of Nuclear Physics, Novosibirsk
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Chen KF, Hou WS, Shapkin M, Sokolov A, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Bakich AM, Balagura V, Bay A, Belous K, Bhardwaj V, Bitenc U, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chao Y, Chen A, Chen WT, Chistov R, Choi Y, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Gabyshev N, Golob B, Ha H, Haba J, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kah DH, Kang JH, Kapusta P, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim HO, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kwon YJ, Lange JS, Lee JS, Lee MJ, Lesiak T, Limosani A, Lin SW, Liu Y, Liventsev D, Mandl F, McOnie S, Medvedeva T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Moloney GR, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park KS, Pestotnik R, Piilonen LE, Sakai Y, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shen CP, Shibuya H, Shiu JG, Shwartz B, Somov A, Stanic S, Staric M, Sumiyoshi T, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Varner G, Vervink K, Villa S, Wang CC, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Wedd R, Wicht J, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Yuan CZ, Yusa Y, Zhang CC, Zhang ZP, Zupanc A. Observation of anomalous upsilon(1S)pi+pi(-) and upsilon(2S)pi+pi(-) production near the upsilon(5S) resonance. Phys Rev Lett 2008; 100:112001. [PMID: 18517777 DOI: 10.1103/physrevlett.100.112001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Indexed: 05/26/2023]
Abstract
We report the first observation of e;{+}e;{-}-->Upsilon(1S)pi;{+}pi;{-}, Upsilon(2S)pi;{+}pi;{-}, and first evidence for e;{+}e;{-}-->Upsilon(3S)pi;{+}pi;{-}, Upsilon(1S)K+K-, near the peak of the Upsilon(5S) resonance at sqrt[s] approximately 10.87 GeV. The results are based on a data sample of 21.7 fb;{-1} collected with the Belle detector at the KEKB e;{+}e;{-} collider. Attributing the signals to the Upsilon(5S) resonance, the partial widths Gamma(Upsilon(5S)-->Upsilon(1S)pi;{+}pi;{-})=0.59+/-0.04(stat)+/-0.09(syst) MeV and Gamma(Upsilon(5S)-->Upsilon(2S)pi;{+}pi;{-})=0.85+/-0.07(stat)+/-0.16(syst) MeV are obtained from the observed cross sections. These values exceed by more than 2 orders of magnitude the previously measured partial widths for dipion transitions between lower Upsilon resonances.
Collapse
Affiliation(s)
- K-F Chen
- Department of Physics, National Taiwan University, Taipei
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Brodzicka J, Palka H, Adachi I, Aihara H, Aulchenko V, Bakich AM, Barberio E, Bay A, Bedny I, Bitenc U, Bondar A, Bracko M, Browder TE, Chang MC, Chang P, Chen A, Chen WT, Cheon BG, Chiang CC, Chistov R, Cho IS, Choi SK, Choi Y, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Gabyshev N, Go A, Gokhroo G, Golob B, Ha H, Haba J, Hara T, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Ikado K, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Joshi NJ, Kah DH, Kang JH, Kawai H, Kawasaki T, Kichimi H, Kim HO, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krokovny P, Kumar R, Kuo CC, Kwon YJ, Lange JS, Lee JS, Lee MJ, Lee SE, Lesiak T, Limosani A, Liventsev D, Mandl F, McOnie S, Medvedeva T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mori T, Nagasaka Y, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Pakhlova G, Park CW, Park H, Pestotnik R, Piilonen LE, Rozanska M, Sakai Y, Schneider O, Seidl R, Sekiya A, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibuya H, Shiu JG, Singh JB, Sokolov A, Somov A, Stanic S, Staric M, Sumiyoshi T, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Varner G, Vervink K, Villa S, Vinokurova A, Wang CC, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Wedd R, Won E, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Yuan CZ, Yusa Y, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A, Zwahlen N. Observation of a new DsJ meson in B+-->D0D0K+ decays. Phys Rev Lett 2008; 100:092001. [PMID: 18352700 DOI: 10.1103/physrevlett.100.092001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2007] [Indexed: 05/26/2023]
Abstract
We report the observation of a new DsJ meson produced in B+-->D0DsJ-->D0D0K+. This state has a mass of M=2708+/-9(-10)(+11) MeV/c2, a width Gamma=108+/-23(-31)(+36) MeV/c2 and a 1- spin-parity. The statistical significance of this observation is 8.4 sigma. The results are based on an analysis of 449 x 10(6) BB events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.
Collapse
Affiliation(s)
- J Brodzicka
- High Energy Accelerator Research Organization (KEK), Tsukuba
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Matyja A, Rozanska M, Adachi I, Aihara H, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Balagura V, Barberio E, Bedny I, Bhardwaj V, Bitenc U, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chang P, Chen A, Chen KF, Cheon BG, Chistov R, Cho IS, Choi Y, Choi YK, Dalseno J, Dash M, Eidelman S, Fratina S, Gabyshev N, Golob B, Ha H, Haba J, Hara T, Hayasaka K, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Ikado K, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki Y, Kaji H, Kajiwara S, Kang JH, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim YJ, Kinoshita K, Korpar S, Kozakai Y, Krizan P, Krokovny P, Kumar R, Kuo CC, Kwon YJ, Lee JS, Lee SE, Lesiak T, Lin SW, Liu Y, Liventsev D, Mandl F, McOnie S, Medvedeva T, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nagasaka Y, Nakamura I, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park H, Park KS, Pestotnik R, Piilonen LE, Sakai Y, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibuya H, Shinomiya S, Shiu JG, Singh JB, Sokolov A, Somov A, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Tajima O, Takasaki F, Tanaka M, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Urquijo P, Ushiroda Y, Varner G, Varvell KE, Vervink K, Villa S, Wang CC, Wang CH, Wang P, Watanabe Y, Won E, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang ZP, Zupanc A. Observation of B(0)-->D(*-)tau(+)nu(tau) decay at Belle. Phys Rev Lett 2007; 99:191807. [PMID: 18233068 DOI: 10.1103/physrevlett.99.191807] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2007] [Indexed: 05/25/2023]
Abstract
We report an observation of the decay B{0}-->D{*-}tau{+}nu{tau} in a data sample containing 535x10{6} BB pairs collected with the Belle detector at the KEKB asymmetric-energy e{+}e{-} collider. We find a signal with a significance of 5.2sigma and measure the branching fraction B(B{0}-->D{*-}tau{+}nu{tau})=(2.02{-0.37}{+0.40}(stat)+/-0.37(syst))%. This is the first observation of an exclusive B decay with a b-->ctaunu{tau} transition.
Collapse
Affiliation(s)
- A Matyja
- H Niewodniczanski Institute of Nuclear Physics, Krakow
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Yuan CZ, Shen CP, Wang P, McOnie S, Adachi I, Aihara H, Aulchenko V, Aushev T, Bahinipati S, Balagura V, Barberio E, Bedny I, Bitenc U, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chang P, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Cho IS, Choi Y, Dalseno J, Danilov M, Dash M, Eidelman S, Fratina S, Gabyshev N, Golob B, Ha H, Haba J, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ikado K, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Kah DH, Kaji H, Kang JH, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lee SE, Lesiak T, Lin SW, Liu Y, Liventsev D, Mandl F, Marlow D, Matyja A, Medvedeva T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nagasaka Y, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park H, Park KS, Peak LS, Piilonen LE, Sakai Y, Schneider O, Schümann J, Seidl R, Senyo K, Sevior ME, Shapkin M, Shibuya H, Shiu JG, Shwartz B, Singh JB, Sokolov A, Somov A, Staric M, Sumiyoshi T, Takasaki F, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Uehara S, Unno Y, Uno S, Usov Y, Varner G, Varvell KE, Vervink K, Villa S, Vinokurova A, Wang CC, Wang CH, Wang XL, Watanabe Y, Won E, Yabsley BD, Yamaguchi A, Yamashita Y, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Measurement of the e+e- -->pi+pi- J/psi cross section via initial-state radiation at Belle. Phys Rev Lett 2007; 99:182004. [PMID: 17995399 DOI: 10.1103/physrevlett.99.182004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2007] [Indexed: 05/25/2023]
Abstract
The cross section for e(+)e(-)-->pi(+)pi(-)J/psi between 3.8 and 5.5 GeV/c(2) is measured using a 548 fb(-1) data sample collected on or near the Upsilon(4S) resonance with the Belle detector at KEKB. A peak near 4.25 GeV/c(2), corresponding to the so called Y(4260), is observed. In addition, there is another cluster of events at around 4.05 GeV/c(2). A fit using two interfering Breit-Wigner shapes describes the data better than one that uses only the Y(4260), especially for the lower-mass side of the 4.25 GeV enhancement.
Collapse
Affiliation(s)
- C Z Yuan
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Wang XL, Yuan CZ, Shen CP, Wang P, Adachi I, Aihara H, Arinstein K, Aushev T, Bakich AM, Barberio E, Bedny I, Bhardwaj V, Bitenc U, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chen A, Chen KF, Cheon BG, Chiang CC, Chistov R, Cho IS, Choi SK, Choi Y, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Epifanov D, Gabyshev N, Go A, Gokhroo G, Ha H, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki Y, Kah DH, Kang JH, Kawai H, Kawasaki T, Kichimi H, Kim HO, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kuzmin A, Lange JS, Lee JS, Lee MJ, Lee SE, Lesiak T, Limosani A, Lin SW, Liu Y, Liventsev D, Mandl F, McOnie S, Medvedeva T, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mori T, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park KS, Pestotnik R, Piilonen LE, Poluektov A, Sahoo H, Sakai Y, Schneider O, Sekiya A, Sevior ME, Shapkin M, Shibuya H, Shiu JG, Shwartz B, Singh JB, Sokolov A, Somov A, Stanic S, Staric M, Sumiyoshi T, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Varner G, Villa S, Vinokurova A, Wang CC, Wang CH, Watanabe Y, Won E, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Observation of two resonant structures in e+ e- -->pi+ pi- psi(2S) via initial-state radiation at Belle. Phys Rev Lett 2007; 99:142002. [PMID: 17930661 DOI: 10.1103/physrevlett.99.142002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Indexed: 05/25/2023]
Abstract
The cross section for e+ e- --> pi+ pi- psi(2S) between threshold and sqrt[s]=5.5 GeV is measured using 673 fb(-1) of data on and off the Upsilon(4S) resonance collected with the Belle detector at KEKB. Two resonant structures are observed in the pi+ pi- psi(2S) invariant-mass distribution, one at 4361 +/- 9 +/- 9 MeV/c2 with a width of 74 +/- 15 +/- 10 MeV/c2, and another at 4664 +/- 11 +/- 5 MeV/c2 with a width of 48 +/- 15 +/- 3 MeV/c2, if the mass spectrum is parametrized with the coherent sum of two Breit-Wigner functions. These values do not match those of any of the known charmonium states.
Collapse
Affiliation(s)
- X L Wang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, PR China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Go A, Bay A, Abe K, Aihara H, Anipko D, Aulchenko V, Aushev T, Bakich AM, Barberio E, Belous K, Bitenc U, Bizjak I, Blyth S, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi Y, Choi YK, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Epifanov D, Fratina S, Gabyshev N, Gershon T, Gokhroo G, Golob B, Gorisek A, Ha H, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou S, Hou WS, Iijima T, Ikado K, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Jacoby C, Kang JH, Katayama N, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Lee J, Lee MJ, Lesiak T, Limosani A, Lin SW, Liu Y, Liventsev D, Matsumoto T, Matyja A, McOnie S, Mitaroff W, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Peak LS, Pestotnik R, Peters M, Piilonen LE, Sahoo H, Sakai Y, Satoyama N, Schietinger T, Schneider O, Schümann J, Schwartz AJ, Seidl R, Senyo K, Shapkin M, Shibuya H, Shwartz B, Singh JB, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sumiyoshi T, Takasaki F, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Varner G, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Wicht J, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zupanc A. Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Upsilon(4S) --> B0 B0 decays. Phys Rev Lett 2007; 99:131802. [PMID: 17930575 DOI: 10.1103/physrevlett.99.131802] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2007] [Indexed: 05/25/2023]
Abstract
The neutral B meson pair produced at the Upsilon(4S) should exhibit a nonlocal correlation of the type discussed by Einstein, Podolsky, and Rosen. We measure this correlation using the time-dependent flavor asymmetry of semileptonic B(0) decays, which we compare with predictions from quantum mechanics and two local realistic models. The data are consistent with quantum mechanics, and inconsistent with the other models. Assuming that some B pairs disentangle to produce B(0) and B(0) with definite flavor, we find a decoherent fraction of 0.029 +/ -0.057, consistent with no decoherence.
Collapse
Affiliation(s)
- A Go
- National Central University, Chung-li
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Staric M, Golob B, Abe K, Abe K, Adachi I, Aihara H, Arinstein K, Aushev T, Aziz T, Bahinipati S, Bakich AM, Balagura V, Barberio E, Bay A, Belous K, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Cho IS, Choi SK, Choi Y, Cole S, Dalseno J, Danilov M, Dash M, Dragic J, Drutskoy A, Eidelman S, Epifanov D, Fratina S, Gabyshev N, Garmash A, Gorisek A, Ha H, Haba J, Hara T, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Higuchi T, Hokuue T, Hoshi Y, Hou WS, Iijima T, Ikado K, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kaji H, Kapusta P, Katayama N, Kawasaki T, Kibayashi A, Kichimi H, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Lin SW, Liventsev D, Mandl F, Marlow D, Matsumoto T, Matyja A, McOnie S, Medvedeva T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mohapatra D, Nagasaka Y, Nakamura I, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Okuno S, Olsen SL, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Pestotnik R, Piilonen LE, Poluektov A, Rozanska M, Sahoo H, Sakai Y, Satoyama N, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibuya H, Shwartz B, Sokolov A, Somov A, Stanic S, Stoeck H, Sumisawa K, Sumiyoshi T, Suzuki S, Suzuki SY, Tajima O, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Varner G, Varvell KE, Vervink K, Villa S, Vinokurova A, Wang CH, Wang MZ, Watanabe Y, Wicht J, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yuan CZ, Yuan Y, Zhang CC, Zhang LM, Zhang ZP, Zhilich V, Zupanc A. Evidence for D0-D0 mixing. Phys Rev Lett 2007; 98:211803. [PMID: 17677765 DOI: 10.1103/physrevlett.98.211803] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2007] [Indexed: 05/16/2023]
Abstract
We observe evidence for D(0)-D(0) mixing by measuring the difference in the apparent lifetime when a D(0) meson decays to the CP eigenstates K(+)K(-) and pi(+)pi(-) and when it decays to the final state K(-)pi(+). We find the relative difference of the lifetimes y(CP) to be [1.31+/-0.32(stat)+/-0.25(syst)]%, 3.2 standard deviations from zero. We also search for a CP asymmetry between D(0) and D(0) decays; no evidence for CP violation is found. These results are based on 540 fb(-1) of data recorded by the Belle detector at the KEKB e(+)e(-) collider.
Collapse
|
19
|
Chang MC, Abe K, Abe K, Adachi I, Aihara H, Anipko D, Arinstein K, Aushev T, Bakich AM, Barberio E, Bay A, Bedny I, Belous K, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Fratina S, Gabyshev N, Gershon T, Go A, Gokhroo G, Ha H, Haba J, Hara T, Hayasaka K, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kaji H, Kang JH, Kataoka SU, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Leder G, Lee MJ, Lee SE, Lesiak T, Limosani A, Lin SW, Majumder G, Mandl F, Matsumoto T, Matyja A, McOnie S, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nagamine T, Nakamura I, Nakano E, Nakao M, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park H, Park KS, Peak LS, Pestotnik R, Piilonen LE, Sakai Y, Satoyama N, Schietinger T, Schneider O, Schümann J, Schwartz AJ, Seidl R, Senyo K, Shapkin M, Shibuya H, Shwartz B, Singh JB, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sumisawa K, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Uno S, Urquijo P, Ushiroda Y, Usov Y, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Wedd R, Won E, Xie QL, Yamaguchi A, Yamashita Y, Yamauchi M, Yusa Y, Zhang CC, Zhang LM, Zhang ZP, Zupanc A. Observation of the decay B(0)-->J/psieta. Phys Rev Lett 2007; 98:131803. [PMID: 17501188 DOI: 10.1103/physrevlett.98.131803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2007] [Indexed: 05/15/2023]
Abstract
We report the first observation of B(0)-->J/psieta decay. These results are obtained from a data sample that contains 449 x10(6) BB[over] pairs accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a signal with a significance of 8.1 sigma and obtain a branching fraction of (9.5+/-1.7(stat)+/-0.8(syst)) x 10(-6).
Collapse
Affiliation(s)
- M-C Chang
- Department of Physics, Fu Jen Catholic University, Taipei
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Abe K, Adachi I, Aihara H, Arinstein K, Asano Y, Aulchenko V, Aushev T, Aziz T, Bakich AM, Balagura V, Barbero M, Bedny I, Bitenc U, Bizjak I, Bondar A, Bracko M, Brodzicka J, Browder TE, Chao Y, Chen A, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Epifanov D, Fratina S, Gabyshev N, Gershon T, Gokhroo G, Golob B, Ha HC, Haba J, Hasegawa Y, Hayasaka K, Hayashii H, Hazumi M, Hinz L, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Ishikawa A, Iwasaki M, Iwasaki Y, Kapusta P, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim SM, Kinoshita K, Korpar S, Krokovny P, Kuo CC, Kuzmin A, Lange JS, Leder G, Lesiak T, Limosani A, Lin SW, Liventsev D, Mandl F, Matsumoto T, Matyja A, Mikami Y, Mitaroff W, Miyabayashi K, Miyata H, Mizuk R, Nagasaka Y, Nakano E, Nakao M, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Palka H, Park CW, Park H, Park KS, Peak LS, Piilonen LE, Poluektov A, Sakai Y, Sato N, Schietinger T, Schneider O, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shwartz B, Sidorov V, Somov A, Stamen R, Staric M, Sumiyoshi T, Suzuki SY, Takasaki F, Tamura N, Tanaka M, Teramoto Y, Tian XC, Trabelsi K, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Urquijo P, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Ying J, Zhang CC, Zhang J, Zhang LM, Zhang ZP, Zhilich V. Observation of a charmoniumlike state produced in association with a J/psi in e+e- annihilation at sqrt[s] approximately equal to 10.6 GeV. Phys Rev Lett 2007; 98:082001. [PMID: 17359087 DOI: 10.1103/physrevlett.98.082001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2005] [Indexed: 05/14/2023]
Abstract
We report the first observation of a charmoniumlike state recoiling from the J/psi in the inclusive process e+e- -->J/psi+anything at a mass of (3.943+/-0.006+/-0.006) GeV/c{2}. We also observe the decay of this state into D*D[over ] and determine its intrinsic width to be less than 52 MeV/c{2} at the 90% C.L. These results are obtained from a 357 fb{-1} data sample collected with the Belle detector near the Upsilon(4S) resonance, at the KEKB asymmetric-energy e+e- collider.
Collapse
Affiliation(s)
- K Abe
- High Energy Accelerator Research Organization (KEK), Tsukuba, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Chen KF, Hara K, Hazumi M, Higuchi T, Miyabayashi K, Nakahama Y, Sumisawa K, Tajima O, Ushiroda Y, Yusa Y, Abe K, Abe K, Adachi I, Aihara H, Anipko D, Arinstein K, Aulchenko V, Aushev T, Aziz T, Bakich AM, Balagura V, Banerjee S, Barberio E, Barbero M, Bay A, Belous K, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chao Y, Chen A, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Dragic J, Drutskoy A, Eidelman S, Epifanov D, Fratina S, Garmash A, Gershon T, Go A, Gokhroo G, Goldenzweig P, Golob B, Ha H, Haba J, Hara T, Hayasaka K, Hayashii H, Heffernan D, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Ikado K, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kakuno H, Kang JH, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuo CC, Kusaka A, Kuzmin A, Kwon YJ, Leder G, Lee J, Lee MJ, Lesiak T, Li J, Limosani A, Lin SW, Liu Y, Liventsev D, Majumder G, Mandl F, Matsumoto T, Matyja A, Mitaroff W, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mohapatra D, Moloney GR, Murakami A, Nagamine T, Nagasaka Y, Nakamura I, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park H, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Satoyama N, Schietinger T, Schneider O, Schümann J, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shibuya H, Shwartz B, Singh JB, Sokolov A, Somov A, Stanic S, Staric M, Stoeck H, Sumiyoshi T, Suzuki S, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Wedd R, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang CC, Zhang ZP, Zhilich V, Zupanc A. Observation of time-dependent CP violation in B0 --> eta'K0 decays and improved measurements of CP asymmetries in B0 --> phiK0, KS0KS0KS0 and B0 --> J/psiK0 decays. Phys Rev Lett 2007; 98:031802. [PMID: 17358677 DOI: 10.1103/physrevlett.98.031802] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2006] [Indexed: 05/14/2023]
Abstract
We present improved measurements of CP-violation parameters in B(0) --> phiK(0), eta(')K(0), KS(0)KS(0)KS(0) decays based on a sample of 535 x 10(6) BB pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We obtain sin2phi1(eff)=+0.64+/-0.10(stat)+/-0.04(syst) for B(0) --> eta(')K(0), +0.50+/-0.21(stat)+/-0.06(syst) for B(0) --> phiK(0), and +0.30+/-0.32(stat)+/-0.08(syst) for B(0) --> KS(0)KS(0)KS(0) decays. We have observed CP violation in the B(0) --> eta(')K(0) decay with a significance of 5.6 standard deviations. We also perform an improved measurement of CP asymmetries in B(0) --> J/psiK(0) decays and obtain sin2phi1=+0.642+/-0.031(stat)+/-0.017(syst).
Collapse
Affiliation(s)
- K-F Chen
- Department of Physics, National Taiwan University, Taipei
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Gabyshev N, Abe K, Abe K, Adachi I, Aihara H, Asano Y, Aulchenko V, Aushev T, Bakich AM, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chao Y, Chen A, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Enari Y, Fratina S, Gershon T, Gokhroo G, Golob B, Gorisek A, Hara T, Hayashii H, Hazumi M, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim HO, Kim SK, Kim SM, Kinoshita K, Korpar S, Krokovny P, Kumar S, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lesiak T, Lin SW, Mandl F, Matsumoto T, Mikami Y, Mitaroff W, Miyake H, Miyata H, Mizuk R, Nagamine T, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Palka H, Park CW, Park H, Parslow N, Peak LS, Pestotnik R, Piilonen LE, Rozanska M, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schwartz AJ, Senyo K, Seuster R, Sevior ME, Shibuya H, Sidorov V, Singh JB, Somov A, Stamen R, Stanic S, Staric M, Sumiyoshi T, Suzuki SY, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Teramoto Y, Tian XC, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Urquijo P, Varner G, Varvell KE, Villa S, Wang CH, Wang MZ, Xie QL, Yabsley BD, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yang H, Zhang CC, Zhang J, Zhang LM, Zhang ZP, Zhilich V, Zontar D. Study of decay mechanisms in B--->Lambdac+ppi- decays and observation of low-mass structure in the Lambdac+p system. Phys Rev Lett 2006; 97:242001. [PMID: 17280269 DOI: 10.1103/physrevlett.97.242001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2005] [Indexed: 05/13/2023]
Abstract
Using a sample of 152 x 10(6) BB pairs accumulated with the Belle detector at the KEKB e+e- collider, we study the decay mechanism of three-body charmed decay B- --> Lambdac+ ppi-. The intermediate two-body decay B--->Sigmac (2455)0 p is observed for the first time with a branching fraction of (3.7 +/- 0.7 +/- 0.4 +/- 1.0) x 10(-5) and a statistical significance of 8.4sigma. We also observe a low-mass enhancement in the (Lambdac+p) system, which can be parametrized as a Breit-Wigner function with a mass of (3.35(-0.02)(+0.01) +/-0.02) GeV/c2 and a width of (0.07(-0.03)(+0.04) +/-0.04) GeV/c2. We measure its branching fraction to be (3.9(-0.7)(+0.8) +/- 0.4 +/- 1.0) x 10(-5) with a statistical significance of 6.2sigma. The errors are statistical, systematic, and that of the Lambdac+-->pK- pi+ decay branching fraction.
Collapse
Affiliation(s)
- N Gabyshev
- Budker Institute of Nuclear Physics, Novosibirsk
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Gabyshev N, Abe K, Abe K, Adachi I, Aihara H, Asano Y, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Balagura V, Barberio E, Bartel W, Bay A, Bedny I, Bitenc U, Bizjak I, Bondar A, Bozek A, Bracko M, Browder TE, Chen A, Chen WT, Cheon BG, Chistov R, Choi Y, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Garmash A, Gershon T, Gokhroo G, Golob B, Haba J, Hayasaka K, Hayashii H, Hazumi M, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Ikado K, Imoto A, Inami K, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kawasaki T, Khan HR, Kichimi H, Kim SM, Korpar S, Krokovny P, Kulasiri R, Kuo CC, Kuzmin A, Kwon YJ, Leder G, Lesiak T, Lin SW, Liventsev D, Majumder G, Matsumoto T, Mitaroff W, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Nakano E, Nakao M, Natkaniec Z, Nishida S, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ozaki H, Palka H, Park CW, Park KS, Pestotnik R, Piilonen LE, Sakai Y, Sato N, Satoyama N, Schietinger T, Schneider O, Schwanda C, Seidl R, Senyo K, Sevior ME, Shapkin M, Shibuya H, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumiyoshi T, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Urquijo P, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Watanabe Y, Won E, Xie QL, Yamaguchi A, Yamauchi M, Ying J, Zhang ZP. Observation of B+ --> Lambda c+ Lambda c- K+ and B0 --> Lambda c+ Lambda c- K0 decays. Phys Rev Lett 2006; 97:202003. [PMID: 17155677 DOI: 10.1103/physrevlett.97.202003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2006] [Indexed: 05/12/2023]
Abstract
We report the first measurements of the doubly charmed baryonic B decays B --> Lambda c+ Lambda c- K. The B+ --> Lambda c+ Lambda c- K+ decay is observed with a branching fraction of (6.5(-0.9)(+1.0)+/-1.1+/-3.4)x10(-4) and a statistical significance of 15.4sigma. The B0 --> Lambda c+ Lambda c- K0 decay is observed with a branching fraction of (7.9(-2.3)(+2.9)+/-1.2+/-4.1)x10(-4) and a statistical significance of 6.6sigma. The branching fraction errors are statistical, systematic, and the error resulting from the uncertainty of the Lambda c+ --> pK- pi+ decay branching fraction. The analysis is based on 357 fb(-1) of data accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+ e- collider.
Collapse
Affiliation(s)
- N Gabyshev
- Budker Institute of Nuclear Physics, Novosibirsk
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Chistov R, Abe K, Abe K, Adachi I, Aihara H, Anipko D, Aulchenko V, Aushev T, Bakich AM, Balagura V, Barberio E, Bay A, Bedny I, Belous K, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Choi Y, Choi YK, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Dragic J, Drutskoy A, Eidelman S, Epifanov D, Gabyshev N, Garmash A, Gershon T, Go A, Gokhroo G, Golob B, Gorisek A, Ha H, Haba J, Hara T, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim HO, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Leder G, Lee J, Lesiak T, Lin SW, Liventsev D, Mandl F, Marlow D, Matsumoto T, Matyja A, McOnie S, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Moloney GR, Nagamine T, Nakano E, Nakao M, Nishida S, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park H, Park KS, Pestotnik R, Piilonen LE, Sakai Y, Schietinger T, Schneider O, Schwartz AJ, Seidl R, Sevior ME, Shapkin M, Shibuya H, Shwartz B, Sidorov V, Singh JB, Sokolov A, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sumiyoshi T, Suzuki S, Takasaki F, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Usov Y, Varner G, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Won E, Wu CH, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang LM, Zhang ZP. Observation of new states decaying into Lambda(c)(+)Kappa(-)pi(+) and Lambda(c)(+)Kappa(0)/(s)pi(-). Phys Rev Lett 2006; 97:162001. [PMID: 17155385 DOI: 10.1103/physrevlett.97.162001] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2006] [Indexed: 05/12/2023]
Abstract
We report the first observation of two charmed strange baryons that decay into Lambda(c)(+)Kappa(-)pi(+). The broader of the two states is measured to have a mass of 2978.5+/-2.1+/-2.0 MeV/c2 and a width of 43.5+/-7.5+/-7.0 MeV/c2. The mass and width of the narrow state are measured to be 3076.7+/-0.9+/-0.5 MeV/c;{2} and 6.2+/-1.2+/-0.8 MeV/c2, respectively. We also perform a search for the isospin partner states that decay into Lambda(c)(+)Kappa(0)/(s)pi(-) and observe a significant signal at the mass of 3082.8+/-1.8+/-1.5 MeV/c2. The data used for this analysis were accumulated at or near the Upsilon(4S) resonance, using the Belle detector at the e+ e- asymmetric-energy collider KEKB. The integrated luminosity of the data sample used is 461.5 fb(-1).
Collapse
Affiliation(s)
- R Chistov
- Institute for Theoretical and Experimental Physics, Moscow, Russia
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Gokhroo G, Majumder G, Abe K, Abe K, Adachi I, Aihara H, Anipko D, Aushev T, Aziz T, Bakich AM, Balagura V, Banerjee S, Belous K, Bitenc U, Bizjak I, Blyth S, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Chistov R, Choi SK, Choi Y, Choi YK, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Eidelman S, Fratina S, Gershon T, Go A, Golob B, Gorisek A, Ha H, Haba J, Hayasaka K, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kawai H, Kawasaki T, Kichimi H, Kim HO, Kim YJ, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuo CC, Kwon YJ, Lange JS, Leder G, Lesiak T, Lin SW, Liventsev D, Mandl F, Matsumoto T, McOnie S, Mitaroff W, Miyata H, Miyazaki Y, Mizuk R, Moloney GR, Nagamine T, Nagasaka Y, Nakao M, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Pestotnik R, Piilonen LE, Sakai Y, Sarangi TR, Schietinger T, Schneider O, Seidl R, Senyo K, Shapkin M, Shibuya H, Sidorov V, Singh JB, Sokolov A, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sugiyama A, Sumiyoshi T, Takasaki F, Tanaka M, Teramoto Y, Tian XC, Tsukamoto T, Uehara S, Uglov T, Ueno K, Usov Y, Varner G, Villa S, Wang CH, Wang MZ, Watanabe Y, Won E, Wu CH, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang CC, Zhang ZP, Zhilich V. Observation of a near-threshold D(0)D[over](0)pi(0) enhancement in B-->D(0)D[over](0)pi(0)Kappa decay. Phys Rev Lett 2006; 97:162002. [PMID: 17155386 DOI: 10.1103/physrevlett.97.162002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2006] [Indexed: 05/12/2023]
Abstract
We report the first observation of a near-threshold enhancement in the D(0)D[over](0)pi(0) system from B-->D(0)D[over](0)pi(0)Kappa decays using a 414 fb(-1) data sample collected at the Upsilon(4S) resonance. The enhancement peaks at a mass M=3875.2+/-0.7(+0.3)/(-1.6) +/-0.8 MeV/c2 and the branching fraction for events in the peak is B(B-->D(0)D[over](0)pi(0)Kappa)=(1.22+/-0.31(+0.23)/(-0.30))x10(-4). The data were collected with the Belle detector at the KEKB energy-asymmetric e+ e- collider.
Collapse
Affiliation(s)
- G Gokhroo
- Tata Institute of Fundamental Research, Bombay, India
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Wu CH, Wang MZ, Abe K, Adachi I, Aihara H, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Balagura V, Bay A, Belous K, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Browder TE, Chao Y, Chen A, Chen WT, Cheon BG, Choi Y, Choi YK, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Eidelman S, Gabyshev N, Gershon T, Go A, Gokhroo G, Gorisek A, Ha H, Haba J, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hokuue T, Hou S, Hou WS, Hsiung YB, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim HO, Kim YJ, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Leder G, Lee J, Lee YJ, Lesiak T, Lin SW, Liventsev D, Majumder G, Mandl F, Matsumoto T, Matyja A, McOnie S, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Pakhlov P, Palka H, Park H, Park KS, Pestotnik R, Piilonen LE, Sakai Y, Schietinger T, Schneider O, Schwartz AJ, Seidl R, Sevior ME, Shapkin M, Shibuya H, Sidorov V, Sokolov A, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sumiyoshi T, Takasaki F, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Urquijo P, Usov Y, Varner G, Wang CC, Wang CH, Watanabe Y, Won E, Yabsley BD, Yamaguchi A, Yamashita Y, Zhang LM, Zhang ZP. Study of J/psi-->pp[over],LambdaLambda[over] and observation of eta(c)-->LambdaLambda[over] at Belle. Phys Rev Lett 2006; 97:162003. [PMID: 17155387 DOI: 10.1103/physrevlett.97.162003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2006] [Indexed: 05/12/2023]
Abstract
We study the baryonic charmonium decays of B mesons B+-->etacK+ and B+-->J/psiK+, where the etac and J/psi subsequently decay into a pp[over] or LambdaLambda[over] pair. We measure the J/psi-->pp[over] and LambdaLambda[over] anisotropy parameters alphaB=-0.60+/-0.13+/-0.14 (pp[over]), -0.44+/-0.51+/-0.31 (LambdaLambda[over ]) and compare to results from e;{+}e;{-}-->J/psi formation experiments. We also report the first observation of etac-->LambdaLambda[over]. The measured branching fraction is B(etac-->LambdaLambda[over ])=(0.87(+0.24)/(-0.21)(stat)(+0.09/-0.14) (syst)+/-0.27(PDG))x10-3. This study is based on a 357 fb-1 data sample recorded on the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+ e- collider.
Collapse
Affiliation(s)
- C-H Wu
- Department of Physics, National Taiwan University, Taipei, Taiwan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Schümann J, Wang CH, Abe K, Adachi I, Aihara H, Anipko D, Arinstein K, Asano Y, Aushev T, Bakich AM, Balagura V, Barberio E, Barbero M, Bay A, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Browder TE, Chang MC, Chang P, Chao Y, Chen A, Chen WT, Cheon BG, Choi Y, Choi YK, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Dragic J, Drutskoy A, Eidelman S, Epifanov D, Fratina S, Gabyshev N, Gershon T, Go A, Gokhroo G, Golob B, Gorisek A, Ha HC, Haba J, Hara T, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kapusta P, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim SK, Kim SM, Kinoshita K, Kulasiri R, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Lee J, Lesiak T, Limosani A, Liventsev D, MacNaughton J, Majumder G, Mandl F, Marlow D, Matsumoto T, Matyja A, Mitaroff W, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Moloney GR, Mori T, Nagamine T, Nakamura I, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Palka H, Park CW, Park H, Parslow N, Peak LS, Pestotnik R, Piilonen LE, Rozanska M, Sakai Y, Sarangi TR, Sato N, Schietinger T, Schneider O, Schwanda C, Seidl R, Senyo K, Sevior ME, Shapkin M, Shibuya H, Shwartz B, Sidorov V, Sokolov A, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Suzuki S, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Villa S, Wang CC, Wang MZ, Watanabe Y, Won E, Xie QL, Yamaguchi A, Yamashita Y, Yamauchi M, Ying J, Yusa Y, Zhang CC, Zhang LM, Zhang ZP, Zhilich V, Zürcher D. Evidence for B-->eta'pi and improved measurements for B-->eta'K. Phys Rev Lett 2006; 97:061802. [PMID: 17026158 DOI: 10.1103/physrevlett.97.061802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2006] [Indexed: 05/12/2023]
Abstract
We report evidence for the exclusive two-body charmless hadronic B meson decay B-->eta'pi, and improved measurements of B-->eta'K. The results are obtained from a data sample of 386x10(6) BB pairs collected at the Upsilon(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e+e- collider. We measure B(B+-->eta'pi+)=[1.76(-0.62)(+0.67)(stat)(-0.14)(+0.15)(syst)]x10(-6) and B(B0-->eta'pi0)=[2.79(-0.96)(+1.02)(stat)(-0.34)(+0.25)(syst)]x10(-6). We also find the ratio of B(B+-->eta'K+)/B(B0-->eta'K0)=1.17+/-0.08(stat)+/-0.03(syst) and measure the direct CP asymmetries for the charged modes.
Collapse
|
28
|
Seidl R, Hasuko K, Abe K, Adachi I, Aihara H, Anipko D, Asano Y, Aushev T, Bakich AM, Balagura V, Barberio E, Bartel W, Bay A, Bitenc U, Bizjak I, Blyth S, Bozek A, Bracko M, Browder TE, Chang P, Chen A, Cheon BG, Choi Y, Choi YK, Chuvikov A, Dalseno J, Danilov M, Dash M, Dragic J, Eidelman S, Fratina S, Gabyshev N, Gershon T, Go A, Gokhroo G, Golob B, Gorisek A, Grosse Perdekamp M, Ha HC, Hayasaka K, Hayashii H, Hazumi M, Hokuue T, Hoshi Y, Hou S, Hou WS, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kapusta P, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim SK, Kim SM, Kulasiri R, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Lee J, Lesiak T, Li J, Limosani A, Lin SW, Liventsev D, Mandl F, Matsumoto T, Matyja A, Mitaroff W, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nakamura I, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Ogawa A, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Palka H, Park CW, Park H, Parslow N, Peak LS, Pestotnik R, Piilonen LE, Sakai Y, Sato N, Satoyama N, Schietinger T, Schneider O, Schümann J, Senyo K, Sevior ME, Shapkin M, Shibuya H, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tsukamoto T, Uehara S, Uglov T, Uno S, Urquijo P, Usov Y, Varner G, Villa S, Wang CC, Wang CH, Watanabe Y, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Ying J, Yusa Y, Zhang LM, Zhang ZP, Zhilich V, Zürcher D. Measurement of azimuthal asymmetries in inclusive production of hadron pairs in e(+)e(-) annihilation at Belle. Phys Rev Lett 2006; 96:232002. [PMID: 16803372 DOI: 10.1103/physrevlett.96.232002] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2006] [Indexed: 05/10/2023]
Abstract
The Collins effect connects transverse quark spin with a measurable azimuthal dependence in the yield of hadronic fragments around the quark's momentum vector. Using two different reconstruction methods, we find evidence of statistically significant azimuthal asymmetries for charged pion pairs in e(+)e(-) annihilation at a center-of-mass energy of 10.52 GeV, which can be attributed to a transverse polarization of the primordial quarks. The measurement was performed using a sample of 79 x 10(6) hadronic events collected with the Belle detector.
Collapse
Affiliation(s)
- R Seidl
- RIKEN BNL Research Center, Upton, New York 11973, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Mohapatra D, Nakao M, Nishida S, Abe K, Abe K, Adachi I, Aihara H, Anipko D, Arinstein K, Asano Y, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Balagura V, Barbero M, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Browder TE, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi Y, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Dragic J, Drutskoy A, Eidelman S, Epifanov D, Fratina S, Gabyshev N, Gershon T, Gokhroo G, Golob B, Gorisek A, Ha HC, Haba J, Hara T, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kataoka SU, Katayama N, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim HO, Kim SM, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee J, Lesiak T, Limosani A, Lin SW, Liventsev D, Majumder G, Mandl F, Marlow D, Matsumoto T, Matyja A, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Moloney GR, Mori T, Nakano E, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Palka H, Park CW, Parslow N, Peak LS, Pestotnik R, Piilonen LE, Poluektov A, Ronga FJ, Rozanska M, Sakai Y, Sarangi TR, Sato N, Schietinger T, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Seidl R, Sevior ME, Shapkin M, Shibuya H, Shwartz B, Sidorov V, Sokolov A, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Trabelsi K, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Wicht J, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Ying J, Yusa Y, Zhang LM, Zhang ZP, Zhilich V, Zürcher D. Observation of b-->dgamma and determination of /Vtd/Vts/. Phys Rev Lett 2006; 96:221601. [PMID: 16803300 DOI: 10.1103/physrevlett.96.221601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2006] [Indexed: 05/10/2023]
Abstract
We report the observation of the flavor-changing neutral current process b-->dgamma using a sample of 386 x 106 B meson pairs accumulated by the Belle detector at the KEKB e+e- collider. We measure branching fractions for the exclusive modes B--->rho-gamma, B0rho0gamma, and B0omegagamma. Assuming that these three modes are related by isospin, we find B(B-->(rho,gamma)gamma)=[Formula: See Text] with a significance of 5.1sigma. This result is used to determine the ratio of Cabibbo-Kobayashi-Maskawa matrix elements /Vtd/Vts/ to be [Formula: See Text].
Collapse
Affiliation(s)
- D Mohapatra
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Somov A, Schwartz AJ, Abe K, Abe K, Adachi I, Aihara H, Anipko D, Arinstein K, Asano Y, Aulchenko V, Aushev T, Aziz T, Bahinipati S, Bakich AM, Balagura V, Bay A, Bedny I, Belous K, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chang P, Chao Y, Chen A, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Chuvikov A, Cole S, Dalseno J, Dash M, Dragic J, Drutskoy A, Eidelman S, Epifanov D, Gabyshev N, Garmash A, Gershon T, Go A, Gokhroo G, Golob B, Hara K, Hara T, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Ikado K, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kapusta P, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim HJ, Kim SK, Kim SM, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kuo CC, Kusaka A, Kuzmin A, Kwon YJ, Leder G, Lesiak T, Li J, Limosani A, Lin SW, Macnaughton J, Mandl F, Marlow D, Matsumoto T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mohapatra D, Nagasaka Y, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Palka H, Park CW, Park H, Pestotnik R, Piilonen LE, Poluektov A, Sakai Y, Sarangi TR, Sato N, Schietinger T, Schneider O, Schwanda C, Seidl R, Senyo K, Sevior ME, Shapkin M, Shibuya H, Shwartz B, Sidorov V, Sokolov A, Soni N, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Varner G, Villa S, Wang CH, Wang MZ, Watanabe Y, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamauchi M, Ying J, Zhang LM, Zhang ZP, Zhilich V. Measurement of the branching fraction, polarization, and asymmetry for decays, and determination of the Cabibbo-Kobayashi-Maskawa phase. Phys Rev Lett 2006; 96:171801. [PMID: 16712287 DOI: 10.1103/physrevlett.96.171801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2006] [Indexed: 05/09/2023]
Abstract
We have measured the branching fraction , longitudinal polarization fraction f(L), and CP asymmetry coefficients A and S for B(0) --> rho(+) rho(-) decays with the Belle detector at the KEKB e(+) e(-) collider using 253 Fb(-1) of data. We obtain B = [22.8 +/- 3.8(stat)(+2.3)(-2.6)(syst)] x 10(-6), f(L) = 0.941 (+0.034)(-0.040)(stat) +/- 0.030(syst). A = 0.00 +/- 0.30(stat) +/- 0.09(syst) and S = 0.08 +/- 0.09(syst). These values are used to constrain the Cabibbo-Kobayashi-Maskawa phase ; the solution consistent with the standard model is phi(2) = (88 +/- 17) degrees or 59 degrees < phi(2) < 115 degrees at 90% C.L.
Collapse
Affiliation(s)
- A Somov
- University of Cincinnati, Ohio 45221, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Abe K, Adachi I, Aihara H, Asano Y, Aulchenko V, Aushev T, Bakich AM, Balagura V, Banerjee S, Barberio E, Barbero M, Bay A, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Dong LY, Dragic J, Drutskoy A, Eidelman S, Enari Y, Fratina S, Gabyshev N, Gershon T, Go A, Gokhroo G, Golob B, Gorisek A, Haba J, Hara T, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Ikado K, Imoto A, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim JH, Kim SK, Kim SM, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kuo CC, Kuzmin A, Kwon YJ, Lee SE, Lesiak T, Li J, Lin SW, Liventsev D, Majumder G, Mandl F, Matsumoto T, Matyja A, Mitaroff W, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mohapatra D, Moloney GR, Nagasaka Y, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CW, Parslow N, Peak LS, Pestotnik R, Piilonen LE, Rozanska M, Sakai Y, Sato N, Satoyama N, Sayeed K, Schietinger T, Schneider O, Schwartz AJ, Sevior ME, Shibuya H, Sidorov V, Somov A, Soni N, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Varner G, Wang CH, Wang MZ, Watanabe Y, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Ying J, Zang SL, Zhang J, Zhang LM, Zhang ZP, Zhilich V, Zürcher D. Measurements of B decays to two kaons. Phys Rev Lett 2005; 95:231802. [PMID: 16384296 DOI: 10.1103/physrevlett.95.231802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2005] [Indexed: 05/05/2023]
Abstract
We report measurements of B meson decays to two kaons using 253 fb(-1) of data collected with the Belle detector at the KEKB energy-asymmetric e+ e- collider. We find evidence for signals in B+ --> K0 K+ and B0 --> K0 K0 with significances of 3.0sigma and 3.5sigma, respectively. (Charge-conjugate modes are included.) The corresponding branching fractions are measured to be [symbol: see text](B+ --> K0 K+) = (1.0 +/- 0.4 +/- 0.1) x 10(-6) and [symbol: see text](B0 --> K0 K0) = (0.8 +/- 0.3 +/- 0.1) x 10(-6). These decay modes are examples of hadronic bd transitions. No signal is observed in the decay B0 --> K+ K-, and we set an upper limit of 3.7 x 10(-7) at 90% confidence level.
Collapse
Affiliation(s)
- K Abe
- High Energy Accelerator Research Organization (KEK), Tsukuba
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Tian XC, Ban Y, Abe K, Abe K, Aihara H, Arinstein K, Asano Y, Aulchenko V, Aushev T, Bakich AM, Banerjee S, Barberio E, Barbero M, Bay A, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Chuvikov A, Dalseno J, Danilov M, Dash M, Dong LY, Drutskoy A, Eidelman S, Enari Y, Fang F, Fratina S, Gabyshev N, Gershon T, Gokhroo G, Golob B, Gorisek A, Haba J, Hara T, Hayasaka K, Hayashii H, Hazumi M, Hokuue T, Hoshi Y, Hou S, Hou WS, Iijima T, Ikado K, Imoto A, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim SK, Kim SM, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kuo CC, Kuzmin A, Kwon YJ, Leder G, Lee SE, Lesiak T, Li J, Lin SW, Liventsev D, Mandl F, Matsumoto T, Matyja A, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Moloney GR, Mori T, Nagamine T, Nagasaka Y, Nakano E, Nakazawa H, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Palka H, Park CW, Park H, Pestotnik R, Piilonen LE, Sakai Y, Sato N, Satoyama N, Sayeed K, Schietinger T, Schneider O, Schwanda C, Schwartz AJ, Sevior ME, Shibuya H, Shwartz B, Sidorov V, Singh JB, Somov A, Soni N, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Urquijo P, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Ying J, Yuan Y, Zhang CC, Zhang LM, Zhang ZP. Measurement of the wrong-sign decays D0 --> K+ pi- pi0 and D0 --> K+ pi- pi+ pi-, and search for CP violation. Phys Rev Lett 2005; 95:231801. [PMID: 16384295 DOI: 10.1103/physrevlett.95.231801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2005] [Indexed: 05/05/2023]
Abstract
Using 281 fb-1 of data from the Belle experiment recorded at or near the (4S) resonance, we have measured the rates of the "wrong-sign" decays D0 --> K+ pi- pi0 and D0 --> K+ pi- pi+ pi- relative to those of the Cabibbo-favored decays D0 --> K- pi+ pi0 and D0 --> K- pi+ pi+ pi-. These wrong-sign decays proceed via a doubly Cabibbo-suppressed amplitude or via D0-D0 mixing; the latter has not yet been observed. We obtain R(WS)(K pi pi0) = [0.229 +/- 0.015(stat)(+0.013)(-0.009)(syst)]% and R(WS)(K3pi) = [0.320 +/- 0.018(stat)(+0.018)(0.013)(syst)]%. The CP asymmetries are measured to be -0.006 +/- 0.053 and -0.018 +/- 0.044 for the K+ pi- pi0 and K+ pi- pi+ pi- final states, respectively.
Collapse
|
33
|
Abe K, Adachi I, Aihara H, Arinstein K, Asano Y, Aushev T, Bakich AM, Ban Y, Barberio E, Barbero M, Bay A, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Chuvikov A, Cole S, Dalseno J, Dash M, Dong LY, Drutskoy A, Eidelman S, Enari Y, Fang F, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Gorisek A, Haba J, Hara K, Hara T, Hastings NC, Hayashii H, Hazumi M, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kakuno H, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawasaki T, Khan HR, Kibayashi A, Kichimi H, Kim SM, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar S, Kuo CC, Kusaka A, Kuzmin A, Kwon YJ, Leder G, Lee SE, Lesiak T, Li J, Lin SW, MacNaughton J, Majumder G, Mandl F, Marlow D, Matyja A, Mikami Y, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mohapatra D, Murakami A, Nagamine T, Nagasaka Y, Nakamura I, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park H, Parslow N, Peak LS, Pestotnik R, Piilonen LE, Ronga FJ, Rozanska M, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schönmeier P, Schümann J, Schwartz AJ, Senyo K, Sevior ME, Shibuya H, Shwartz B, Sidorov V, Singh JB, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Suzuki SY, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Teramoto Y, Tian XC, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Urquijo P, Ushiroda Y, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Yang H, Zhang J, Zhang LM, Zhang ZP, Zhilich V, Zontar D, Zürcher D. Improved evidence for direct CP violation in B0-->pi+pi- decays and model-independent constraints on phi2. Phys Rev Lett 2005; 95:101801. [PMID: 16196917 DOI: 10.1103/physrevlett.95.101801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2005] [Indexed: 05/04/2023]
Abstract
We present a new measurement of the time-dependent CP-violating parameters in B(0)--> pi(+)pi(-) decays with 275 x 10(6) BB pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider operating at the Gamma(4S) resonance. We find 666 +/- 43 B(0) --> pi(+)pi(-) events and measure the CP-violating parameters: S(pipi) = -0.67 +/- 0.16(stat) +/- 0.06(syst) and A(pipi) = +0.56 +/- 0.12(stat) +/- 0.06(syst). We find evidence for large direct CP violation with a significance greater than 4 standard deviations for any S(pipi) value. Using isospin relations, we obtain 95.4% confidence intervals for the Cabibbo-Kobayashi-Maskawa quark-mixing matrix angle phi(2) of 0 degree < phiv(2) < 19 degrees and 71 degrees < phi(2) < 180 degrees.
Collapse
Affiliation(s)
- K Abe
- High Energy Accelerator Research Organization (KEK), Tsukuba
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Itoh R, Onuki Y, Abe K, Abe K, Adachi I, Aihara H, Asano Y, Aushev T, Bakich AM, Ban Y, Barberio E, Bay A, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Chuvikov A, Cole S, Dalseno J, Dash M, Dong LY, Drutskoy A, Eidelman S, Enari Y, Fang F, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Gorisek A, Haba J, Hara K, Hara T, Hayashii H, Hazumi M, Higuchi T, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Ishino H, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kapusta P, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim SM, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar S, Kuo CC, Kusaka A, Kuzmin A, Kwon YJ, Leder G, Lee SE, Lesiak T, Li J, Lin SW, Majumder G, Mandl F, Matsumoto T, Matyja A, Mikami Y, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mohapatra D, Nagamine T, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park H, Parslow N, Peak LS, Pestotnik R, Piilonen LE, Poluektov A, Rozanska M, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schönmeier P, Schümann J, Schwartz AJ, Senyo K, Sevior ME, Shibuya H, Shwartz B, Sidorov V, Singh JB, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Suzuki SY, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Teramoto Y, Tian XC, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Urquijo P, Ushiroda Y, Varner G, Varvell KE, Wang CC, Wang CH, Watanabe Y, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Yang H, Zhang J, Zhang LM, Zhang ZP, Zhilich V, Zontar D. Studies of CP violation in B-->J/PsiK* decays. Phys Rev Lett 2005; 95:091601. [PMID: 16197207 DOI: 10.1103/physrevlett.95.091601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2005] [Revised: 07/13/2005] [Indexed: 05/04/2023]
Abstract
CP violation in B-->J/PsiK* decays is studied using an angular analysis in a data sample of 253 fb(-1) recorded with the Belle detector at the KEKB e(+)e(-) collider. The flavor separated measurements of the decay amplitudes indicate no evidence for direct CP violation. T-odd CP violation is studied using the asymmetries in triple product correlations, and the results are consistent with the standard model null predictions. The time-dependent angular analysis gives the following values of CP-violating parameters: sin(2phi(1) = 0.24 +/- 0.31 +/- 0.05 and cos(2phi(1)=0.56 +/- 0.79 +/- 0.11.
Collapse
Affiliation(s)
- R Itoh
- High Energy Accelerator Research Organization (KEK), Tsukuba, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Lee YJ, Wang MZ, Abe K, Abe K, Aihara H, Asano Y, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Bedny I, Bitenc U, Bizjak I, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Enari Y, Fang F, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Gorisek A, Haba J, Hayasaka K, Hazumi M, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim SK, Kim SM, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar S, Kuo CC, Kuzmin A, Kwon YJ, Leder G, Lee SE, Lesiak T, Li J, Lin SW, Liventsev D, Mandl F, Matsumoto T, Matyja A, Mitaroff W, Miyake H, Miyata H, Mizuk R, Moloney GR, Nagamine T, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okabe T, Olsen SL, Ostrowicz W, Ozaki H, Palka H, Park CW, Parslow N, Peak LS, Pestotnik R, Piilonen LE, Root N, Rozanska M, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schümann J, Senyo K, Sevior ME, Shibata T, Shibuya H, Shwartz B, Sidorov V, Singh JB, Somov A, Stamen R, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Teramoto Y, Tian XC, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Urquijo P, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Watanabe M, Xie QL, Yamaguchi A, Yamashita Y, Yamauchi M, Yang H, Ying J, Zhang CC, Zhang LM, Zhang ZP, Zhilich V, Zontar D, Zürcher D. Observation of B+ --> plambdagamma. Phys Rev Lett 2005; 95:061802. [PMID: 16090939 DOI: 10.1103/physrevlett.95.061802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2005] [Indexed: 05/03/2023]
Abstract
We report the first observation of the radiative hyperonic B decay B+ --> plambdagamma, using a 140 fb(-1) data sample recorded on upsilom(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e- collider. The measured branching fraction is [symbol: see text](B+ --> plambdagamma) = (2.16(+0.58)(-0.53) +/- 0.20) x 10(-6). We examine its M(plambda) distribution and observe a peak near threshold. This feature is expected by the short-distance b --> sgamma transition. A search for B+ --> pepsilon0gamma yields no significant signal, and we set a 90% confidence-level upper limit on the branching fraction of [symbol: see textB+ --> pepsilon0gamma <4.6 x 10(-6).
Collapse
Affiliation(s)
- Y-J Lee
- Department of Physics, National Taiwan University, Taipei
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Majumder G, Abe K, Abe K, Adachi I, Aihara H, Asano Y, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Banerjee S, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi Y, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Enari Y, Fratina S, Gabyshev N, Gershon T, Go A, Gokhroo G, Golob B, Gorisek A, Haba J, Hara T, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Itoh R, Iwasaki M, Kang JH, Kang JS, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim SK, Kim SM, Krizan P, Krokovny P, Kulasiri R, Kumar S, Kuo CC, Kuzmin A, Kwon YJ, Leder G, Lee SE, Lesiak T, Li J, Lin SW, Liventsev D, Macnaughton J, Mandl F, Matsumoto T, Matyja A, Mikami Y, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mohapatra D, Moloney GR, Nagamine T, Nagasaka Y, Nakamura I, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Palka H, Park CW, Park H, Parslow N, Peak LS, Pestotnik R, Piilonen LE, Rozanska M, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schönmeier P, Schümann J, Sevior ME, Shibuya H, Shwartz B, Sidorov V, Singh JB, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Suzuki SY, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Urquijo P, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Xie QL, Yamaguchi A, Yamashita Y, Yamauchi M, Yang H, Ying J, Zhang CC, Zhang LM, Zhang ZP, Zhilich V, Zontar D. Evidence for B0 --> D+ D- and observation of B- --> D0D- and B- -->D0D*- decays. Phys Rev Lett 2005; 95:041803. [PMID: 16090797 DOI: 10.1103/physrevlett.95.041803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2005] [Indexed: 05/03/2023]
Abstract
We report evidence for B(0) --> D(0)D(-) and the first observation of the decay modes B(-) --> D(0)D(-) and B(-) --> D(0)D(*-) based on a sample of 152 x 10(6) BB events collected by the Belle detector at KEKB. The branching fractions for B(0) --> D(+) D(-), B--->D(0)D(-), and B--> D(0)D(*-) are found to be (1.91 +/- 0.51 +/- 0.30) x10(-4), (4.83 +/- 0.78 +/- 0.58) x 10(-4), and (4.57 +/- 0.71 +/- 0.56) x 10(-4), respectively. Charge asymmetries in the B---> D(0)D(-) and B(-) --> D(0)D(*-) channels are consistent with zero.
Collapse
Affiliation(s)
- G Majumder
- Tata Institute of Fundamental Research, Bombay
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Ushiroda Y, Sumisawa K, Hazumi M, Abe K, Abe K, Adachi I, Aihara H, Asano Y, Aulchenko V, Aushev T, Bakich AM, Bay A, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Choi SK, Choi Y, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Dragic J, Eidelman S, Fang F, Fratina S, Gabyshev N, Gershon T, Gokhroo G, Gorisek A, Haba J, Hara K, Hastings NC, Hayasaka K, Hayashii H, Higuchi T, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim SM, Kinoshita K, Krizan P, Krokovny P, Kumar S, Kuo CC, Kusaka A, Kuzmin A, Kwon YJ, Leder G, Lesiak T, Li J, Limosani A, Lin SW, Liventsev D, Mandl F, Matsumoto T, Mikami Y, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mohapatra D, Moloney GR, Nagamine T, Nakano E, Nakao M, Nishida S, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CW, Parslow N, Peak LS, Pestotnik R, Piilonen LE, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schwartz AJ, Senyo K, Sevior ME, Shibata T, Shibuya H, Singh JB, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Teramoto Y, Tian XC, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Uno S, Urquijo P, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Watanabe M, Watanabe Y, Xie QL, Yamaguchi A, Yamashita Y, Yamauchi M, Yang H, Ying J, Zhang J, Zhang LM, Zhang ZP, Zontar D. Measurement of the time-dependent CP-violating asymmetry in B(0)-->K(0)(S)pi(0)gamma decays. Phys Rev Lett 2005; 94:231601. [PMID: 16090457 DOI: 10.1103/physrevlett.94.231601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2005] [Indexed: 05/03/2023]
Abstract
We present a new measurement of CP-violation parameters in B(0)-->K(0)(S)pi(0)gamma decay based on a sample of 275 x 10(6) BB pairs collected at the Gamma(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One of the B mesons is fully reconstructed in the B(0)-->K(0)(S)pi(0)gamma decay. The flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distribution of the proper time intervals between the two B decays. We obtain SK(0)(S)(pi(0)gamma) = -0.58(+0.46)(-0.38)(stat) +/- 0.11(syst) and AK(0)(S)(pi(0)gamma) = +0.03 +/- 0.34(stat) +/- 0.11(syst), for the K(0)(S)pi(0) invariant mass covering the full range up to 1.8 GeV/c2. We also measure the CP-violation parameters for the case B(0)-->K(*0)(-->K(0)(S)pi(0))gamma and obtain S(K(*0)gamma) = -0.79(+0.63)(-0.50)(stat) +/- 0.10(syst) for A(K(*0)gamma) fixed at 0.
Collapse
Affiliation(s)
- Y Ushiroda
- High Energy Accelerator Research Organization (KEK), Tsukuba
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Chen KF, Abe K, Abe K, Aihara H, Asano Y, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chang P, Chao Y, Chen A, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Enari Y, Fang F, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Gorisek A, Haba J, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim SK, Kim SM, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar S, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SE, Lee YJ, Lesiak T, Li J, Lin SW, Liventsev D, MacNaughton J, Mandl F, Matsumoto T, Matyja A, Mikami Y, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mohapatra D, Moloney GR, Nagamine T, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CW, Parslow N, Peak LS, Pestotnik R, Piilonen LE, Root N, Rozanska M, Sagawa H, Sakai Y, Sarangi TR, Sato N, Schietinger T, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shibata T, Shibuya H, Shwartz B, Sidorov V, Singh JB, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Teramoto Y, Tian XC, Trabelsi K, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Urquijo P, Ushiroda Y, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe M, Watanabe Y, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Yang H, Ying J, Zhang J, Zhang LM, Zhang ZP, Zhilich V, Zontar D, Zürcher D. Measurement of polarization and triple-product correlations in B-->phiK* decays. Phys Rev Lett 2005; 94:221804. [PMID: 16090384 DOI: 10.1103/physrevlett.94.221804] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2005] [Indexed: 05/03/2023]
Abstract
We present measurements of decay amplitudes and triple-product correlations in B-->phiK* decays based on 253 fb(-1) of data recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) storage ring. The decay amplitudes for the three different helicity states are determined from the angular distributions of final-state particles. The longitudinal polarization amplitudes are found to be 0.45 +/- 0.05 +/- 0.02 for B0-->phiK(*0) and 0.52 +/- 0.08 +/- 0.03 for B+ -->phiK(*+) decays. CP- and T-odd CP-violating triple-product asymmetries are measured to be consistent with zero.
Collapse
Affiliation(s)
- K-F Chen
- Department of Physics, National Taiwan University, Taipei, Taiwan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Abe K, Abe K, Adachi I, Aihara H, Akatsu M, Anipko D, Asano Y, Aushev T, Aziz T, Bahinipati S, Bakich AM, Banerjee S, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Eiges V, Fang F, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Haba J, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Higuchi T, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Iijima T, Imoto A, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Kang JH, Kang JS, Kapusta P, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim HJ, Kim JH, Kim SK, Kim SM, Kinoshita K, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kuo CC, Kuzmin A, Kwon YJ, Leder G, Lee SH, Lesiak T, Li J, Lin SW, Liventsev D, MacNaughton J, Majumder G, Mandl F, Matsumoto T, Matyja A, Mitaroff W, Miyata H, Mizuk R, Nagamine T, Nagasaka Y, Nakano E, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CW, Parslow N, Pestotnik R, Piilonen LE, Poluektov A, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schümann J, Semenov S, Senyo K, Seuster R, Shibuya H, Shwartz B, Singh JB, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Suzuki SY, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Teramoto Y, Tian XC, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Varvell KE, Villa S, Wang CC, Wang CH, Watanabe M, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Ying J, Yusa Y, Zhang CC, Zhang J, Zhang LM, Zhang ZP, Zhilich V, Zontar D. Observation of the D1(2420)-->Dpi + pi- decays. Phys Rev Lett 2005; 94:221805. [PMID: 16090385 DOI: 10.1103/physrevlett.94.221805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2004] [Indexed: 05/03/2023]
Abstract
We report on the first observation of D0/1(2420)-->D0pi- pi+ and D+/1(2420-->D+ pi- pi+ decays (where the contribution from the dominant known D1-->D*pi decay mode is excluded) in the B- -->D0/1pi-) and (-)B0-->D+/1pi- decays, respectively. The observation is based on 15.2 x 10(7) B(-)B events collected with the Belle detector at the KEKB collider. We also set 90% confidence level upper limits for the branching fractions of the four following decays: B- -->D0/1pi-, D01-->D(*0)pi- pi+, (-)B0-->D+/1pi-, D+/1-->D(*+) pi- pi+, B- -->D(*0)2(2460)pi-, D(*0)2 -->D(*0) pi- pi+, (-)B0-->D(*+)2(2460)pi-, D(*+)2-->D(*+)pi- pi+.
Collapse
Affiliation(s)
- K Abe
- High Energy Accelerator Research Organization (KEK), Tsukuba, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Choi SK, Olsen SL, Abe K, Abe K, Adachi I, Aihara H, Asano Y, Bahinipati S, Bakich AM, Ban Y, Bedny I, Bitenc U, Bizjak I, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chang P, Chen A, Chen WT, Cheon BG, Chistov R, Choi Y, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Enari Y, Fang F, Fratina S, Gabyshev N, Gershon T, Gokhroo G, Golob B, Hara T, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim SM, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Lee SE, Lee SH, Lesiak T, Li J, Lin SW, Liventsev D, Majumder G, Matsumoto T, Matyja A, Mitaroff W, Miyabayashi K, Miyata H, Mizuk R, Mohapatra D, Moloney GR, Nakano E, Nakao M, Nakazawa H, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okabe T, Okuno S, Ostrowicz W, Palka H, Park CW, Parslow N, Pestotnik R, Piilonen LE, Rozanska M, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schwanda C, Shibuya H, Shwartz B, Somov A, Soni N, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Suzuki SY, Tajima O, Takasaki F, Tamai K, Tamura N, Teramoto Y, Tian XC, Trabelsi K, Uehara S, Uglov T, Uno S, Varner G, Varvell KE, Villa S, Wang CH, Wang MZ, Watanabe M, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Yang H, Yuan Y, Yusa Y, Zhang CC, Zhang J, Zhang LM, Zhang ZP, Zontar D, Zürcher D. Observation of a near-threshold omegaJ/psi mass enhancement in exclusive B-->KomegaJ/psi decays. Phys Rev Lett 2005; 94:182002. [PMID: 15904362 DOI: 10.1103/physrevlett.94.182002] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2004] [Indexed: 05/02/2023]
Abstract
We report the observation of a near-threshold enhancement in the omegaJ/psi invariant mass distribution for exclusive B-->KomegaJ/psi decays. The results are obtained from a 253 fb(-1) data sample that contains 275 x 10(6) BB pairs that were collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. The statistical significance of the omegaJ/psi mass enhancement is estimated to be greater than 8sigma.
Collapse
Affiliation(s)
- S-K Choi
- Gyeongsang National University, Chinju
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Mizuk R, Abe K, Abe K, Aihara H, Akatsu M, Asano Y, Aulchenko V, Aushev T, Bakich AM, Balagura V, Ban Y, Banerjee S, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chao Y, Chen A, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Dragic J, Drutskoy A, Eidelman S, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Haba J, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim JH, Kim SK, Kim SM, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kuo CC, Kuzmin A, Kwon YJ, Lee SE, Lee SH, Lesiak T, Li J, Lin SW, Liventsev D, Majumder G, Mandl F, Matsumoto T, Mitaroff W, Miyake H, Miyata H, Mohapatra D, Mori T, Nagamine T, Nagasaka Y, Nakano E, Nakao M, Nishida S, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CW, Park H, Parslow N, Pestotnik R, Piilonen LE, Sagawa H, Sakai Y, Schietinger T, Schneider O, Schönmeier P, Schümann J, Semenov S, Senyo K, Seuster R, Shibuya H, Singh JB, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki SY, Tajima O, Takasaki F, Tamura N, Tanaka M, Teramoto Y, Tian XC, Uehara S, Uglov T, Ueno K, Uno S, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Yang H, Ying J, Zhang CC, Zhang J, Zhang LM, Zhang ZP, Zhilich V, Zontar D, Zürcher D. Observation of an isotriplet of excited charmed baryons decaying to lambda+c pi. Phys Rev Lett 2005; 94:122002. [PMID: 15903907 DOI: 10.1103/physrevlett.94.122002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2004] [Indexed: 05/02/2023]
Abstract
We report the observation of an isotriplet of excited charmed baryons, decaying into Lambda(+)(c)pi(-), Lambda(+)(c)pi(0), and Lambda(+)(c)pi(+). We measure the mass differences M(Lambda(+)(c)pi)-M(Lambda(+)(c)) and widths to be 515.4(+3.2+2.1)(-3.1-6.0) MeV/c(2), 61(+18+22)(-13-13) MeV for the neutral state; 505.4(+5.8+12.4)(-4.6-2.0) MeV/c(2), 62(+37+52)(-23-38) MeV for the charged state; and 514.5(+3.4+2.8)(-3.1-4.9) MeV/c(2), 75(+18+12)(-13-11) MeV for the doubly charged state, where the uncertainties are statistical and systematic, respectively. These results are obtained from a 281 fb(-1) data sample collected with the Belle detector near the Upsilon(4S) resonance, at the KEKB asymmetric energy e(+)e(-) collider.
Collapse
Affiliation(s)
- R Mizuk
- Institute for Theoretical and Experimental Physics, Moscow
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Yang H, Nakao M, Abe K, Abe K, Aihara H, Asano Y, Aushev T, Bahinipati S, Bakich AM, Ban Y, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chang P, Chao Y, Chen A, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Chuvikov A, Cole S, Dalseno J, Dash M, Eidelman S, Enari Y, Fang F, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Haba J, Hayasaka K, Hayashii H, Hazumi M, Hinz L, Hokuue T, Hoshi Y, Hsiung YB, Iijima T, Imoto A, Inami K, Iwasaki Y, Kang JH, Kang JS, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim JH, Kim SK, Kim SM, Kim TH, Kinoshita K, Korpar S, Krokovny P, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SH, Lesiak T, Li J, Lin SW, Majumder G, Matsumoto T, Matyja A, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Nagamine T, Nagasaka Y, Nakano E, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Pakhlov P, Palka H, Park CW, Parslow N, Pestotnik R, Piilonen LE, Rozanska M, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Seuster R, Shibuya H, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Suzuki SY, Tajima O, Takasaki F, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Ushiroda Y, Varner G, Varvell KE, Villa S, Wang CH, Wang MZ, Watanabe M, Yamaguchi A, Yamashita Y, Yamauchi M, Yuan Y, Zhang LM, Zhang ZP, Zhilich V, Zontar D, Zürcher D. Observation of B+-->K1(1270)+gamma. Phys Rev Lett 2005; 94:111802. [PMID: 15903847 DOI: 10.1103/physrevlett.94.111802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2004] [Indexed: 05/02/2023]
Abstract
We report the observation of the radiative decay B+-->K1(1270)(+) gamma using a data sample of 140 fb(-1) taken at the Upsilon(4S) resonance with the Belle detector at the KEKB e+e- collider. We find the branching fraction to be B(B+-->K1(1270)(+)gamma)=(4.3+/-0.9(stat.)+/-0.9(syst.))x10(-5) with a significance of 7.3sigma. We find no significant signal for B+-->K1(1400)(+)gamma and set an upper limit B(B+-->K1(1400)(+)gamma)<1.5 x 10(-5) at the 90% confidence level. We also measure inclusive branching fractions for B+-->K+pi+pi-gamma and B0-->K0pi+pi-gamma in the mass range 1 GeV/c(2)<M(K+(0)pi+pi-)<2 GeV/c(2).
Collapse
|
43
|
Saigo M, Abe K, Abe K, Aihara H, Akatsu M, Asano Y, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Ban Y, Banerjee S, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Dong LY, Drutskoy A, Eidelman S, Eiges V, Enari Y, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Haba J, Hayasaka K, Hayashii H, Hazumi M, Higuchi T, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawasaki T, Kent N, Khan HR, Kichimi H, Kim HJ, Kim SK, Kim SM, Kinoshita K, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kuo CC, Kuzmin A, Kwon YJ, Leder G, Lee SE, Lesiak T, Li J, Lin SW, Liventsev D, Macnaughton J, Majumder G, Mandl F, Marlow D, Matsumoto T, Matyja A, Mikami Y, Mitaroff W, Miyake H, Mizuk R, Mohapatra D, Mori T, Nagasaka Y, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park H, Park KS, Parslow N, Peak LS, Pestotnik R, Piilonen LE, Poluektov A, Ronga FJ, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schönmeier P, Schümann J, Schwartz AJ, Semenov S, Seuster R, Sevior ME, Shibuya H, Singh JB, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Suzuki SY, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Teramoto Y, Tian XC, Trabelsi K, Tsukamoto T, Uehara S, Uglov T, Uno S, Ushiroda Y, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe M, Watanabe Y, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yusa Y, Zhang LM, Zhang ZP, Zhilich V, Zontar D, Zürcher D. Study of the suppressed decays B- -->[K+pi-](D)K- and B- -->[K+pi-]Dpi-. Phys Rev Lett 2005; 94:091601. [PMID: 15783952 DOI: 10.1103/physrevlett.94.091601] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2004] [Indexed: 05/24/2023]
Abstract
We report a study of the suppressed decays B--->[K(+)pi(-)](D)K- and B--->[K(+)pi(-)](D)pi(-), where [K(+)pi(-)](D) indicates that the K+pi(-) pair originates from a neutral D meson. These decay modes are sensitive to the unitarity triangle angle varphi(3). We use a data sample containing 275 x 10(6) BB pairs recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) storage ring. The signal for B--->[K(+)pi(-)](D)K- is not statistically significant, and we set a limit r(B)<0.27 at 90% confidence level, where r(B) is the magnitude of the ratio of amplitudes |A(B--->D 0K-)/A(B--->D0K-)|. We observe a signal with 6.4sigma statistical significance in the related mode, B--->[K(+)pi(-)](D)pi(-).
Collapse
Affiliation(s)
- M Saigo
- Tohoku University, Sendai, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Li J, Zhang ZP, Schwartz AJ, Abe K, Abe K, Aihara H, Akatsu M, Asano Y, Aushev T, Bakich AM, Bay A, Bedny I, Bitenc U, Bizjak I, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Dong LY, Drutskoy A, Eidelman S, Eiges V, Enari Y, Fang F, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Haba J, Hayasaka K, Hayashii H, Hazumi M, Higuchi T, Hokuue T, Hoshi H, Hou S, Hou WS, Iijima T, Imoto A, Inami K, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Khan HR, Kim JH, Kim SK, Kinoshita K, Krokovny P, Kulasiri R, Kuo CC, Kwon YJ, Lange LS, Leder G, Lee SH, Lesiak T, Limosani A, Lin SW, Liventsev D, Macnaughton J, Majumder G, Mandl F, Matsumoto T, Matyja A, Mitaroff W, Miyata H, Mizuk R, Mohapatra D, Mori T, Nagamine T, Nagasaka Y, Nakadaira T, Nakano E, Nishida S, Nitoh O, Ogawa S, Ohshima T, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park H, Parslow N, Peak LS, Piilonen LE, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schönmeier P, Schümann J, Schwanda C, Semenov S, Senyo K, Sevior ME, Shibuya H, Sidorov V, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumiyoshi T, Suzuki SY, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tsuboyama T, Uglov T, Ueno K, Uno S, Varner G, Villa S, Wang CC, Wang CH, Yabsley BD, Yamaguchi A, Yamamoto H, Yamashita Y, Yang H, Ying J, Yuan Y, Yusa Y, Zang SL, Zhang CC, Zhang J, Zhang LM, Zheng Z, Zontar D. Search for D0-D0 mixing in D0 --> K+ pi(-) decays and measurement of the doubly-Cabibbo-suppressed decay rate. Phys Rev Lett 2005; 94:071801. [PMID: 15783802 DOI: 10.1103/physrevlett.94.071801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2004] [Indexed: 05/24/2023]
Abstract
We have searched for mixing in the D(0)-D (0) system by measuring the decay-time distribution of D(0) --> K(+) pi(-) decays. The analysis uses 90 fb(-1) of data collected by the Belle detector at the KEKB e(+) e(-) collider. We fit the decay-time distribution for the mixing parameters x' and y' and also for the parameter R(D), which is the ratio of the rate for the doubly-Cabibbo-suppressed decay D(0)--> K+ pi(-) to that for the Cabibbo-favored decay D(0)--> K-pi(+). We do these fits both assuming CP conservation and allowing for CP violation. We use a frequentist method to obtain a 95% C.L. region in the x'(2) - y' plane. Assuming no mixing, we measure R(D) = (0.381 +/- 0.017(+0.008)(-0.016))%.
Collapse
Affiliation(s)
- J Li
- University of Science and Technology of China, Hefei
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Drutskoy A, Abe K, Abe K, Adachi I, Aihara H, Akatsu M, Asano Y, Aushev T, Bahinipati S, Bakich AM, Bay A, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Eidelman S, Eiges V, Enari Y, Fang F, Fratina S, Gabyshev N, Gershon T, Go A, Gokhroo G, Golob B, Hayasaka K, Hayashii H, Hazumi M, Higuchi T, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Imoto A, Inami K, Ishikawa A, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim JH, Kim SK, Kim SM, Kinoshita K, Koppenburg P, Krizan P, Krokovny P, Kulasiri R, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Lesiak T, Li J, Lin SW, Liventsev D, MacNaughton J, Majumder G, Mandl F, Matsumoto T, Matyja A, Mikami Y, Mitaroff W, Miyata H, Mizuk R, Mohapatra D, Mori T, Nagamine T, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okabe T, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CW, Park H, Parslow N, Pestotnik R, Piilonen LE, Rozanska M, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schönmeier P, Schümann J, Schwartz AJ, Semenov S, Senyo K, Seuster R, Shibuya H, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Suzuki SY, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Teramoto Y, Tian XC, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe M, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Ying J, Zhang CC, Zhang LM, Zhang ZP, Zhilich V, Zontar D. Observation of B0-->D*sJ(2317)+K- decay. Phys Rev Lett 2005; 94:061802. [PMID: 15783721 DOI: 10.1103/physrevlett.94.061802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2004] [Indexed: 05/24/2023]
Abstract
The decays B0-->D+sJK- and B0-->D-sJpi+ are studied for the first time. A significant signal is observed in the B0-->D*sJ(2317)+K- decay channel with B(B0-->D*sJ(2317)+K-) x B(D*sJ(2317)+-->D+spi0)=(5.3(+1.5)(-1.3)+/-0.7+/-1.4) x 10(-5). No signals are observed in the B0-->D*sJ(2317)-pi+, B0-->DsJ(2460)+K-, and B 0-->DsJ(2460)-pi+ decay modes, and upper limits are obtained. The analysis is based on a data set of 140 fb(-1) collected by the Belle experiment at the asymmetric e+e- collider KEKB.
Collapse
Affiliation(s)
- A Drutskoy
- University of Cincinnati, Cincinnati, Ohio 45221, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Kataoka SU, Abe K, Abe K, Adachi I, Aihara H, Akatsu M, Asano Y, Aushev T, Bahinipati S, Bakich AM, Bay A, Bedny I, Bitenc U, Bizjak I, Bondar A, Bracko M, Chao Y, Chen A, Chen WT, Cheon BG, Chistov R, Choi Y, Danilov M, Dash M, Dong LY, Dragic J, Eidelman S, Eiges V, Enari Y, Fang F, Fratina S, Gabyshev N, Garmash A, Gershon T, Go A, Gokhroo G, Golob B, Haba J, Hara K, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Higuchi T, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawasaki T, Khan HR, Kim HJ, Kinoshita K, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SE, Lee SH, Lesiak T, Li J, Lin SW, MacNaughton J, Mandl F, Matsumoto T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mohapatra D, Mori T, Nagamine T, Nagasaka Y, Nakano E, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park H, Peak LS, Piilonen LE, Ronga FJ, Rozanska M, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schümann J, Schwartz AJ, Semenov S, Senyo K, Sevior ME, Shibata T, Shibuya H, Singh JB, Somov A, Soni N, Stamen R, Staric M, Sumisawa K, Sumiyoshi T, Tajima O, Takasaki F, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Trabelsi K, Tsukamoto T, Ueno K, Uno S, Varner G, Villa S, Wang CC, Wang CH, Watanabe M, Yabsley BD, Yamaguchi A, Yamashita Y, Ying J, Yuan Y, Zang SL, Zhang CC, Zhang J, Zhang LM, Zhang ZP, Zhilich V, Ziegler T, Zontar D. Study of time-dependent CP violation in B0-->J/psipi0 decays. Phys Rev Lett 2004; 93:261801. [PMID: 15697967 DOI: 10.1103/physrevlett.93.261801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2004] [Indexed: 05/24/2023]
Abstract
We report a measurement of CP asymmetry parameters in the decay B0(B (0))-->J/psipi(0), which is governed by the b-->cc d transition. The analysis is based on a 140 fb(-1) data sample accumulated at the Upsilon(4S) resonance by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson in the J/psipi(0) final state is fully reconstructed for events used in this analysis. The accompanying B meson flavor is identified by its decay products. From the distribution of proper-time intervals between the two B decays, we obtain the following CP-violating parameters: S(J/psipi(0))=-0.72+/-0.42(stat)+/-0.09(syst) and A(J/psipi(0))=-0.01+/-0.29(stat)+/-0.03(syst).
Collapse
|
47
|
Aushev T, Iwasaki Y, Abe K, Abe K, Adachi I, Aihara H, Akatsu M, Asano Y, Aziz T, Bahinipati S, Bakich AM, Bay A, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Chang P, Chao Y, Chen A, Chen WT, Cheon BG, Chistov R, Choi Y, Chuvikov A, Danilov M, Dash M, Dong LY, Dragic J, Drutskoy A, Eidelman S, Eiges V, Enari Y, Fang F, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Hastings NC, Hayasaka K, Hazumi M, Higuchi T, Hinz L, Hokuue T, Hoshi Y, Hou S, Hou WS, Iijima T, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Kang JH, Kang JS, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Khan HR, Kim HJ, Kim SK, Kinoshita K, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SH, Lesiak T, Li J, Lin SW, Liventsev D, Macnaughton J, Mandl F, Matsumoto T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mohapatra D, Mori T, Nagamine T, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park H, Peak LS, Piilonen LE, Sagawa H, Sakai Y, Sato N, Schietinger T, Schneider O, Schümann J, Schwartz AJ, Semenov S, Senyo K, Sevior ME, Shibuya H, Somov A, Soni N, Stamen R, Staric M, Sumisawa K, Sumiyoshi T, Tajima O, Takasaki F, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Trabelsi K, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Yabsley BD, Yamaguchi A, Yamashita Y, Ying J, Yuan Y, Zang SL, Zhang J, Zhang LM, Zhang ZP, Zhilich V, Zontar D. Search for CP violation in the decay B0-->D*+/-D-/+. Phys Rev Lett 2004; 93:201802. [PMID: 15600912 DOI: 10.1103/physrevlett.93.201802] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2004] [Indexed: 05/24/2023]
Abstract
We report a search for CP-violating asymmetry in B0-->D(*+/-)D-/+ decays. The analysis employs two methods of B0 reconstruction: full and partial. In the full reconstruction method all daughter particles of the B0 are required to be detected; the partial reconstruction technique requires a fully reconstructed D- and only a slow pion from the D(*+)-->D0pi(+)(slow) decay. From a fit to the distribution of the time interval corresponding to the distance between two B meson decay points we calculate the CP-violating parameters and find the significance of nonzero CP asymmetry to be 2.7 standard deviations.
Collapse
Affiliation(s)
- T Aushev
- Institute for Theoretical and Experimental Physics, Moscow
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Chao Y, Chang P, Abe K, Abe K, Abe N, Adachi I, Aihara H, Akai K, Akatsu M, Akemoto M, Asano Y, Aso T, Aulchenko V, Aushev T, Aziz T, Bahinipati S, Bakich AM, Ban Y, Barbero M, Bay A, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Chuvikov A, Cole S, Danilov M, Dash M, Dong LY, Dowd R, Dragic J, Drutskoy A, Eidelman S, Eiges V, Enari Y, Epifanov D, Everton CW, Fang F, Flanagan J, Fratina S, Fujii H, Funakoshi Y, Furukawa K, Gabyshev N, Garmash A, Gershon T, Go A, Gokhroo G, Golob B, Grosse Perdekamp M, Guler H, Guo R, Haba J, Hagner C, Handa F, Hara K, Hara T, Hastings NC, Hasuko K, Hayasaka K, Hayashii H, Hazumi M, Heenan EM, Higuchi I, Higuchi T, Hinz L, Hojo T, Hokuue T, Hoshi Y, Hoshina K, Hou S, Hou WS, Hsiung YB, Huang HC, Igaki T, Igarashi Y, Iijima T, Ikeda H, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh K, Itoh R, Iwamoto M, Iwasaki M, Iwasaki Y, Kagan R, Kakuno H, Kamitani T, Kang JH, Kang JS, Kapusta P, Kataoka SU, Katayama N, Kawai H, Kawai H, Kawakami Y, Kawamura N, Kawasaki T, Kent N, Khan HR, Kibayashi A, Kichimi H, Kikuchi M, Kikutani E, Kim HJ, Kim HO, Kim H, Kim JH, Kim SK, Kim TH, Kinoshita K, Kobayashi S, Koiso H, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kubo T, Kulasiri R, Kumar S, Kuo CC, Kurashiro H, Kurihara E, Kusaka A, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SE, Lee SH, Lee YJ, Lesiak T, Li J, Limosani A, Lin SW, Liventsev D, MacNaughton J, Majumder G, Mandl F, Marlow D, Masuzawa M, Matsuishi T, Matsumoto H, Matsumoto S, Matsumoto T, Matyja A, Michizono S, Mikami Y, Mimashi T, Mitaroff W, Miyabayashi K, Miyabayashi Y, Miyake H, Miyata H, Mizuk R, Mohapatra D, Moloney GR, Moorhead GF, Mori T, Mueller J, Murakami A, Nagamine T, Nagasaka Y, Nakadaira T, Nakamura I, Nakamura TT, Nakano E, Nakao M, Nakayama H, Nakazawa H, Natkaniec Z, Neichi K, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa A, Ogawa S, Ogawa Y, Ohmi K, Ohnishi Y, Ohshima T, Ohuchi N, Oide K, Okabe T, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CW, Park H, Park KS, Parslow N, Peak LS, Pernicka M, Perroud JP, Peters M, Piilonen LE, Poluektov A, Ronga FJ, Root N, Rozanska M, Sagawa H, Saigo M, Saitoh S, Sakai Y, Sakamoto H, Sakaue H, Sarangi TR, Satapathy M, Sato N, Schietinger T, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Seki T, Semenov S, Senyo K, Settai Y, Seuster R, Sevior ME, Shibata T, Shibuya H, Shidara T, Shwartz B, Sidorov V, Siegle V, Singh JB, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sugahara R, Sugi A, Sugimura T, Sugiyama A, Sumisawa K, Sumiyoshi T, Suzuki S, Suzuki SY, Swain SK, Tajima O, Takasaki F, Tamai K, Tamura N, Tanabe K, Tanaka M, Tawada M, Taylor GN, Teramoto Y, Tian XC, Tokuda S, Tovey SN, Trabelsi K, Tsuboyama T, Tsukamoto T, Uchida K, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Ushiroda Y, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang JG, Wang MZ, Watanabe M, Watanabe Y, Widhalm L, Xie QL, Yabsley BD, Yamaguchi A, Yamamoto H, Yamamoto N, Yamamoto S, Yamanaka T, Yamashita Y, Yamauchi M, Yang H, Yeh P, Ying J, Yoshida K, Yoshida M, Yuan Y, Yusa Y, Yuta H, Zang SL, Zhang CC, Zhang J, Zhang LM, Zhang ZP, Zheng Y, Zhilich V, Ziegler T, Zontar D, Zürcher D. Evidence for direct CP violation in B0-->K+pi- decays. Phys Rev Lett 2004; 93:191802. [PMID: 15600826 DOI: 10.1103/physrevlett.93.191802] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2004] [Indexed: 05/24/2023]
Abstract
We report evidence for direct CP violation in the decay B0-->K+pi(-) with 253 fb(-1) of data collected with the Belle detector at the KEKB e(+)e(-) collider. Using 275x10(6) BB pairs we observe a B-->K+/-pi(-/+) signal with 2140+/-53 events. The measured CP violating asymmetry is A(CP)(K+pi(-))=-0.101+/-0.025(stat)+/-0.005(syst), corresponding to a significance of 3.9sigma including systematics. We also search for CP violation in the decays B+-->K+pi(0) and B+-->pi(+)pi(0). The measured CP violating asymmetries are A(CP)(K+pi(0))=0.04+/-0.05(stat)+/-0.02(syst) and A(CP)(pi(+)pi(0))=-0.02+/-0.10(stat)+/-0.01(syst), corresponding to the intervals -0.05<A(CP)(K+pi(0))<0.13 and -0.18<A(CP)(pi(+)pi(0))<0.14 at 90% confidence level.
Collapse
Affiliation(s)
- Y Chao
- Department of Physics, National Taiwan University, Taipei
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Schwanda C, Abe K, Abe K, Abe T, Adachi I, Aihara H, Akatsu M, Asano Y, Aushev T, Bahinipati S, Bakich AM, Ban Y, Banas E, Bay A, Bizjak I, Bondar A, Bozek A, Bracko M, Browder TE, Chang MC, Chao Y, Cheon BG, Choi Y, Choi YK, Chuvikov A, Cole S, Danilov M, Dash M, Dong LY, Drutskoy A, Eidelman S, Eiges V, Gabyshev N, Gershon T, Gokhroo G, Golob B, Hazumi M, Higuchi I, Hinz L, Hokuue T, Hoshi Y, Hou WS, Huang HC, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki H, Iwasaki M, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kichimi H, Kim HJ, Kinoshita K, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kumar S, Kwon YJ, Lange JS, Leder G, Lee SH, Lesiak T, Li J, Limosani A, Lin SW, MacNaughton J, Mandl F, Matsumoto T, Matyja A, Mikami Y, Mitaroff W, Miyake H, Miyata H, Mori T, Nagamine T, Nagasaka Y, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CW, Park H, Parslow N, Peak LS, Piilonen LE, Sagawa H, Saitoh S, Sakai Y, Sarangi TR, Schneider O, Schümann J, Schwartz AJ, Semenov S, Senyo K, Sevior ME, Shibuya H, Singh JB, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamai K, Tanaka M, Teramoto Y, Tomura T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Varner G, Varvell KE, Wang CC, Wang CH, Yabsley BD, Yamada Y, Yamaguchi A, Yamashita Y, Yanai H, Ying J, Zhang ZP, Zontar D, Zürcher D. Evidence for B+-->omegal+nu. Phys Rev Lett 2004; 93:131803. [PMID: 15524705 DOI: 10.1103/physrevlett.93.131803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2004] [Indexed: 05/24/2023]
Abstract
We have searched for the decay B+-->omegal(+)nu (l=e or mu) in 78 fb(-1) of Upsilon(4S) data (85x10(6)BB events) accumulated with the Belle detector. The final state is fully reconstructed using the omega decay into pi(+)pi(-)pi(0), combined with detector hermeticity to estimate the neutrino momentum. A signal of 414+/-125 events is found in the data, corresponding to a branching fraction of (1.3+/-0.4+/-0.2+/-0.3)x10(-4), where the first two errors are statistical and systematic, respectively. The third error reflects the estimated form-factor uncertainty.
Collapse
Affiliation(s)
- C Schwanda
- Institute of High Energy Physics, Vienna
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Koppenburg P, Abe K, Abe K, Abe T, Adachi I, Aihara H, Akatsu M, Asano Y, Aulchenko V, Aushev T, Bakich AM, Ban Y, Bay A, Bitenc U, Bizjak I, Bondar A, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen KF, Cheon BG, Choi Y, Chuvikov A, Cole S, Danilov M, Dash M, Dong LY, Drutskoy A, Eidelman S, Eiges V, Enari Y, Fang F, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Haba J, Hayashii H, Hazumi M, Higuchi T, Hinz L, Hokuue T, Hoshi Y, Hou WS, Hsiung YB, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki H, Iwasaki M, Kang JH, Kang JS, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim HJ, Kim JH, Kim SK, Kim TH, Korpar S, Krizan P, Krokovny P, Kumar S, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SH, Lesiak T, Li J, Limosani A, Lin SW, MacNaughton J, Majumder G, Mandl F, Matsumoto T, Mikami Y, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mohapatra D, Moloney GR, Mori T, Nagamine T, Nagasaka Y, Nakadaira T, Nakano E, Nakao M, Natkaniec Z, Neichi K, Nishida S, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CW, Park H, Parslow N, Peak LS, Piilonen LE, Ronga FJ, Rozanska M, Sagawa H, Saitoh S, Sakai Y, Sarangi TR, Schneider O, Schwanda C, Schwartz AJ, Semenov S, Senyo K, Seuster R, Sevior ME, Shibuya H, Soni N, Stamen R, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamura N, Tanaka M, Taylor GN, Tomura T, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Ushiroda Y, Varner G, Varvell KE, Wang CC, Wang CH, Watanabe M, Yabsley BD, Yamada Y, Yamaguchi A, Yamashita Y, Yamauchi M, Yanai H, Yang H, Ying J, Yusa Y, Zhang CC, Zhang ZP, Ziegler T, Zontar D. Inclusive measurement of the photon energy spectrum in b --> sgamma decays. Phys Rev Lett 2004; 93:061803. [PMID: 15323621 DOI: 10.1103/physrevlett.93.061803] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2004] [Indexed: 05/24/2023]
Abstract
We report a fully inclusive measurement of the flavor changing neutral current decay b --> sgamma in the energy range 1.8 GeV < or = E*gamma < or = 2.8 GeV, covering 95% of the total spectrum. Using 140 fb(-1), we obtain B(b --> sgamma) = (3.55+/-0.32(+0.30+0.11)(-0.31-0.07)) x 10(-4), where the errors are statistical, systematic, and from theory corrections. We also measure the first and second moments of the photon energy spectrum above 1.8 GeV and obtain (Egamma) = 2.292+/-0.026+/-0.034 GeV and (E2gamma) - (Egamma)2 = 0.0305+/-0.0074+/-0.0063 GeV2, where the errors are statistical and systematic.
Collapse
Affiliation(s)
- P Koppenburg
- High Energy Accelerator Research Organization (KEK), Tsukuba, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|