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Auburger G, Kessler KR, Kang JS, Gispert S, Stoltenburg G, Braak H. Klinik und Neuropathologie der autosomal dominanten I93M-Mutation des UCH-L1-Gens (PARK5). AKTUELLE NEUROLOGIE 2005. [DOI: 10.1055/s-2005-866633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Auburger G, Kessler K, Kang JS, Gispert S, Stoltenburg G, Braak H. Die PARK5 I93M-Mutation verursacht Parkinson'sche Krankheit mit kognitiver Einschränkung und Lewy-Pathologie. AKTUELLE NEUROLOGIE 2005. [DOI: 10.1055/s-2005-866628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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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. PHYSICAL REVIEW LETTERS 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] [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).
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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-. PHYSICAL REVIEW LETTERS 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] [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(-).
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Kang JS, Jeong GS, Jung MW, Lee JJ, Hwang CM, Sun K. PUMP OUTPUT ESTIMATION FOR ELECTRO PNEUMATIC TYPE HYBRID VAD (H-VAD). ASAIO J 2005. [DOI: 10.1097/00002480-200503000-00160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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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. PHYSICAL REVIEW LETTERS 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] [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))%.
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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. PHYSICAL REVIEW LETTERS 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] [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.
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Jhee OH, Hong JW, Om AS, Lee MH, Lee WS, Shaw LM, Lee JW, Kang JS. Direct determination of verapamil in rat plasma by coupled column microbore-HPLC method. J Pharm Biomed Anal 2005; 37:405-10. [PMID: 15708686 DOI: 10.1016/j.jpba.2004.11.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2004] [Revised: 10/29/2004] [Accepted: 11/01/2004] [Indexed: 10/26/2022]
Abstract
This report describes an automated coupled column microbore-high-performance liquid chromatography (HPLC) with fluorescence detection for direct determination of verapamil in small volume of rat plasma. We used HPLC system consisting of three columns such as precolumn, intermediate and analytical column and six-port switching valve and injected small volume of rat plasma to the system without sample preparation. An aliquot of sample was directly injected into Capcell Pak MF Ph precolumn for clean-up and enrichment, 35 mm Capcell Pak C18, intermediate column for concentration of compounds and 250 mm Capcell Pak C18 analytical column for separation of compounds and two mobile phases are used as mobile phase A (50mM ammonium phosphate, pH 4.5) and B (50mM ammonium phosphate:acetonitrile=70:30 v/v). Analysis of verapamil and internal standard, propranolol was performed with direct injection of 10 microl of rat plasma to the system and were eluted at 22 and 12 min, respectively, at a mobile phase flow rate of 0.5 (mobile phase A) and 0.15 ml/min (mobile phase B). The peaks of verapamil and internal standard were good shapes and well separated from any interfering endogenous peaks during a total run time of 25 min. The calibration curve for verapamil showed good linearity (r(2)=0.9997) over the concentration range of 0.01-2.50 microg/ml. The mean RSD (%) values of intra-day (n=5) and inter-day (n=5) variability of verapamil ranged from 1.96 to 9.06 and 0.62 to 3.08%, respectively. The LOD and LOQ were 0.01 and 0.025 microg/ml, respectively, for verapamil using 10 microl of rat plasma. An automated coupled column microbore-HPLC method was successfully applied to a pharmacokinetic study after intravenous injection of 3mg/kg of verapamil to the normal and dimethylnitrosamine (DMN)-induced hepatofibrotic rats.
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Zhang J, Abe K, Abe K, Abe T, Aihara H, Asano Y, Aulchenko V, Aushev T, Aziz T, Bahinipati S, Bakich AM, Bay A, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen KF, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Danilov M, Dash M, Dong LY, Dragic J, Drutskoy A, Eidelman S, Eiges V, Enari Y, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Hayashii H, Hazumi M, Higuchi T, Hinz L, Hokuue T, Hoshi Y, Hou WS, Hsiung YB, Iijima T, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki H, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim JH, Kim TH, Kinoshita K, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kumar S, Kuzmin A, Kwon YJ, Leder G, Lee SE, Lee SH, Lesiak T, Li J, Limosani A, Lin SW, Macnaughton J, Majumder G, Mandl F, Matsumoto T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mohapatra D, Moloney GR, Mori T, Nagamine T, Nagasaka Y, Nakao M, Nishida S, Nitoh O, Nozaki T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Park CW, Park H, Parslow N, Piilonen LE, Ronga FJ, Rozanska M, Sagawa H, Sakai Y, Sarangi TR, Schneider O, Schümann J, Schwartz AJ, Semenov S, Senyo K, Sevior ME, Shibuya H, Shwartz B, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Tomura T, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe M, Watanabe Y, Yabsley BD, Yamada Y, Yamaguchi A, Yamashita Y, Yamauchi M, Yang H, Ying J, Yusa Y, Zang SL, Zhang CC, Zhang ZP, Zhilich V, Ziegler T, Zontar D. Measurement of the branching fraction and CP asymmetry in B+ --> rho+pi0. PHYSICAL REVIEW LETTERS 2005; 94:031801. [PMID: 15698249 DOI: 10.1103/physrevlett.94.031801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2004] [Indexed: 05/24/2023]
Abstract
We report a measurement of the branching fraction for the decay B+ --> rho(+) pi(0) based on a 140 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric e(+)e(-) collider. We measure the branching fraction B(B(+) --> rho(+)pi(0)) = (13.2 +/- 2.3(stat)(+1.4)(-1.9)(syst)) x 10(-6), and the CP-violating asymmetry A(CP)(B-/+ -->rho(-/+)pi(0))=0.06 +/- 0.17(stat)(+0.04)(-0.05)(syst).
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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. PHYSICAL REVIEW LETTERS 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] [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).
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Lee YJ, Wang MZ, Abe K, Abe K, Abe T, Aihara H, Asano Y, Aulchenko V, Aushev T, Aziz T, Bahinipati S, Bakich AM, Ban Y, Bedny I, Bitenc U, Bizjak I, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chao Y, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Danilov M, Dash M, Dong LY, Drutskoy A, Eidelman S, Eiges V, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Guo R, Haba J, Hayasaka K, Hayashii H, Hazumi M, Higuchi T, Hinz L, Hokuue T, Hoshi Y, Hou WS, Hsiung YB, Imoto A, Inami K, Ishikawa A, Itoh R, Iwasaki H, Iwasaki M, Kang JH, Kang JS, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim JH, Kim SK, Koppenburg P, Korpar S, Krokovny P, Kuzmin A, Kwon YJ, Lee SH, Lesiak T, Li J, Lin SW, Macnaughton J, Majumder G, Mandl F, Matsumoto T, Matyja A, Mikami Y, Mitaroff W, Miyabayashi K, Miyata H, Mizuk R, Mori T, Nagamine T, Nagasaka Y, Nakadaira T, Nakao M, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Parslow N, Piilonen LE, Sagawa H, Saitoh S, Sakai Y, Sato N, Schneider O, Schümann J, Semenov S, Senyo K, Sevior ME, Shibuya H, Sidorov V, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tovey SN, Tsuboyama T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Varner G, Varvell KE, Wang CH, Watanabe M, Yabsley BD, Yamada Y, Yamaguchi A, Yamashita Y, Yamauchi M, Ying J, Yuan Y, Yusa Y, Zang SL, Zhang CC, Zhang J, Zhang ZP, Ziegler T, Zontar D. Observation of B+-->LambdaLambdaK+. PHYSICAL REVIEW LETTERS 2004; 93:211801. [PMID: 15600996 DOI: 10.1103/physrevlett.93.211801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2004] [Indexed: 05/24/2023]
Abstract
We report the first observation of the charmless hyperonic B decay, B+-->LambdaLambdaK+, using a 140 fb(-1) data sample recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB (e+)(e-) collider. The measured branching fraction is B(B+-->LambdaLambdaK+) = (2.91(+0.90)(-0.70) +/- 0.38) x 10(-6). We also perform a search for the related decay mode B+-->LambdaLambdapi+, but do not find a significant signal. We set a 90% confidence-level upper limit of B(B+-->LambdaLambdapi+) < 2.8 x 10(-6).
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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-/+. PHYSICAL REVIEW LETTERS 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] [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.
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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. PHYSICAL REVIEW LETTERS 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] [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.
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Dragic J, Gershon T, Abe K, Abe K, Abe T, Aihara H, Asano Y, Aulchenko V, Aushev T, Aziz T, Bakich AM, Banas E, Bay A, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Cole S, Dong LY, Dowd R, Eidelman S, Eiges V, Enari Y, Epifanov D, Fratina S, Gabyshev N, Gokhroo G, Golob B, Gordon A, Haba J, Hastings NC, 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, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim JH, Kim SK, Koppenburg P, Korpar S, Krokovny P, Kulasiri R, Kumar S, Kuzmin A, Kwon YJ, Lee SE, Lee SH, Lesiak T, Li J, Limosani A, Lin SW, MacNaughton J, Majumder G, Mandl F, Matsumoto T, Matyja A, Mitaroff W, Miyake H, Miyata H, Mohapatra D, Moloney GR, Nagamine T, Nagasaka Y, Nakadaira 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, Park CW, Park H, Parslow N, Peak LS, Piilonen LE, Poluektov A, Ronga FJ, Rozanska M, Sagawa H, Sakai Y, Sarangi TR, Schneider O, Schümann J, Schwartz AJ, Semenov S, Senyo K, Sevior ME, Shibuya H, Shwartz B, Sidorov V, Singh JB, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Tajima O, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tomura T, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe M, Watanabe Y, Yabsley BD, Yamada Y, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yang H, Ying J, Zhang J, Zhang ZP, Zhilich V, Zontar D. Evidence for B0-->rho0pi0. PHYSICAL REVIEW LETTERS 2004; 93:131802. [PMID: 15524704 DOI: 10.1103/physrevlett.93.131802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2004] [Indexed: 05/24/2023]
Abstract
We present the first evidence of the decay B0-->rho(0)pi(0), using 140 fb(-1) of data collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) collider. We detect 15.1+/-4.8 signal events with a significance of 3.5 standard deviations and measure the branching fraction to be B(B0-->rho(0)pi(0))=(5.1+/-1.6(stat)+/-0.9(syst))x10(-6).
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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. PHYSICAL REVIEW LETTERS 2004; 93:131803. [PMID: 15524705 DOI: 10.1103/physrevlett.93.131803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [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.
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Enari Y, Abe K, Abe K, Abe T, Adachi I, Aihara H, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich AM, Ban Y, Bedny I, Bizjak I, Bondar A, Bozek A, Bracko M, Browder TE, Chao Y, Cheon BG, Choi SK, Choi Y, Choi YK, Chuvikov A, Danilov M, Dong LY, Eidelman S, Eiges V, Epifanov D, Fukunaga C, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Handa F, Hara T, Hayasaka K, Hayashii H, Hazumi M, Hokuue T, Hoshi Y, Hou WS, Huang HC, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki H, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim HJ, Kim JH, Kinoshita K, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kuzmin A, Kwon YJ, Leder G, Lee SH, Lesiak T, Lin SW, MacNaughton J, Mandl F, Matsumoto T, Matyja A, Mitaroff W, Miyake H, Miyata H, Moloney GR, 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, Park CW, Park H, Park KS, Parslow N, Piilonen LE, Poluektov A, Root N, Sato N, Sagawa H, Saitoh S, Sakai Y, Schneider O, Schwartz AJ, Semenov S, Senyo K, Shibuya H, Shwartz B, Sidorov V, Singh JB, Soni N, Stanic S, Staric M, Sugi A, Sumisawa K, Sumiyoshi T, Suzuki SY, Takasaki F, Tamai K, Tamura N, Tanaka M, Teramoto Y, Tomura T, Tsuboyama T, Uehara S, Ueno K, Uno S, Varner G, Wang CH, Wang JG, Watanabe Y, Yabsley BD, Yamada Y, Yamauchi M, Yang H, Ying J, Yusa Y, Zhang ZP, Zhilich V, Zontar D. Search for the lepton-flavor-violating decay tau- -->micro-eta at Belle. PHYSICAL REVIEW LETTERS 2004; 93:081803. [PMID: 15447174 DOI: 10.1103/physrevlett.93.081803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2004] [Indexed: 05/24/2023]
Abstract
We have searched for the lepton flavor violating decay tau(-)-->micro(-)eta using a data sample of 84.3 fb(-1) accumulated with the Belle detector at KEK. The eta meson was detected through the decay modes: eta-->gammagamma and pi(+)pi(-)pi(0). No signal candidates are found, and we obtain an upper limit for the branching fraction B(tau(-)-->micro(-)eta)<3.4 x 10(-7) at the 90% confidence level.
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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. PHYSICAL REVIEW LETTERS 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] [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.
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Chistov R, Abe K, Abe K, Abe T, Aihara H, Akatsu M, Asano Y, Aushev T, Bakich AM, Ban Y, Banerjee S, Bay A, Bedny I, Bizjak I, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chao Y, Chen KF, Cheon BG, Choi Y, Choi YK, Danilov M, Dash M, Dong LY, Drutskoy A, Eidelman S, Eiges V, Epifanov D, Gabyshev N, Garmash A, Gershon T, Golob B, Guo R, Haba J, Hara T, Hayashii H, Hazumi M, Hinz L, Hokuue T, Hoshi Y, Hou WS, Huang HC, Iijima T, Inami K, Ishikawa A, Iwasaki H, Iwasaki M, Kagan R, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim SK, Kinoshita K, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kumar S, Kuzmin A, Kwon YJ, Lange JS, Lesiak T, Li J, Limosani A, Lin SW, Liventsev D, MacNaughton J, Majumder G, Mandl F, Marlow D, Matsumoto H, Matsumoto T, Matyja A, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mohapatra D, Moloney GR, Nagamine T, Nagasaka Y, Nakadaira T, Nakano E, Nakao M, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Palka H, Park H, Parslow N, Piilonen LE, Sagawa H, Sakai Y, Sarangi TR, Schneider O, Schwartz AJ, Semenov S, Sevior ME, Shwartz B, Sidorov V, Stamen R, Stanic S, Staric M, Sugiyama A, Sumisawa K, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Teramoto Y, Tomura T, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Varner G, Wang CC, Wang CH, Wang MZ, Yabsley BD, Yamada Y, Yamaguchi A, Yamashita Y, Yamauchi M, Ying J, Zhang CC, Zhang ZP, Zhilich V, Zontar D, Zürcher D. Observation of B+-->psi(3770)K+. PHYSICAL REVIEW LETTERS 2004; 93:051803. [PMID: 15323686 DOI: 10.1103/physrevlett.93.051803] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2004] [Indexed: 05/24/2023]
Abstract
We report the first observation of the decay B+-->psi(3770)K+ where the psi(3770) is reconstructed in the D0(-)D(0) and D+D- decay channels. The obtained branching fraction is B(B+-->psi(3770)K+)=(0.48+/-0.11+/-0.07)x10(-3). We have measured the branching fraction for the decay B+-->D0(-)D0K+ to be (1.17+/-0.21+/-0.15)x10(-3) and set a 90% confidence level upper limit of 0.90 x 10(-3) for the decay B+-->D+D-K+. We also present the results of a search for possible decays to D(-)D and D0(-)D(0)pi(0) of the recently observed X(3872) particle. The analysis is based on 88 fb(-1) of data collected at the Upsilon(4S) resonance by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
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Nishida S, Abe K, Abe K, Abe T, Aihara H, Asano Y, Aushev T, Bahinipati S, Bakich AM, Ban Y, Banas E, Bay A, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chang P, Chen KF, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Cole S, Danilov M, Dash M, Dong LY, Dragic J, Eidelman S, Eiges V, Enari Y, Epifanov D, Fang F, Fratina S, Garmash A, Gershon T, Gokhroo G, Golob B, Haba J, Hara T, Hastings NC, Hayashii H, Hazumi M, Higuchi T, Hinz L, Hoshi Y, Hou WS, Hsiung YB, Iijima T, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Kapusta P, Kataoka SU, Katayama N, Kawasaki T, Kichimi H, Kim HJ, Kim SK, Kim TH, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SE, Lee SH, Li J, Lin SW, MacNaughton J, Majumder G, Mandl F, Matsumoto T, Matyja A, Mitaroff W, Miyake H, Mizuk R, Mohapatra D, Moloney GR, Murakami A, Nagamine T, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Palka H, Park CW, Park H, Peters M, Piilonen LE, Ronga FJ, Rozanska M, Sakai Y, Schneider O, Schümann J, Schwanda C, Semenov S, Seuster R, Sevior ME, Shibuya H, Shwartz B, Somov A, Soni N, Stamen R, Stanic S, Staric M, Sugiyama A, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamai K, Tanaka M, Teramoto Y, Tomura T, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Ushiroda Y, Varner G, Varvell KE, Wang CH, Wang MZ, Watanabe Y, Yabsley BD, Yamada Y, Yamaguchi A, Yamashita Y, Yamauchi M, Yang H, Ying J, Zhang ZP, Zhilich V, Ziegler T, Zontar D, Zürcher D. Measurement of the CP asymmetry in B-->Xs gamma. PHYSICAL REVIEW LETTERS 2004; 93:031803. [PMID: 15323814 DOI: 10.1103/physrevlett.93.031803] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2004] [Indexed: 05/24/2023]
Abstract
Direct CP violation in the b-->sgamma process is a sensitive probe of physics beyond the standard model. We report a measurement of the CP asymmetry in B-->X(s)gamma, where the hadronic recoil system X(s) is reconstructed using a pseudoreconstruction technique. In this approach there is negligible contamination from b-->dgamma decays, which are expected to have a much larger CP asymmetry. We find A(CP)=0.002+/-0.050(stat)+/-0.030(syst) for B-->X(s)gamma events having recoil mass smaller than 2.1 GeV/c(2). The analysis is based on a data sample of 140 fb(-1) recorded at the upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) storage ring.
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Sarangi TR, Abe K, Abe K, Abe T, Aihara H, Asano Y, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Ban Y, Banerjee S, Bitenc U, Bizjak I, Blyth S, Bondar A, Bracko M, Browder TE, Chang MC, Chang P, Chen KF, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Cole S, Danilov M, Dash M, Dong LY, Drutskoy A, Eidelman S, Eiges V, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Haba J, Hara K, Hastings NC, Hayashii H, Hazumi M, Higuchi T, Hinz L, Hokuue T, Hoshi Y, Hou WS, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki H, Iwasaki M, Kang JH, Kang JS, Kapusta P, Kataoka SU, Kawai H, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim SK, Kim TH, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SH, Lesiak T, Li J, Lin SW, Liventsev D, MacNaughton J, Mandl F, Marlow D, Matsumoto T, Matyja A, Mikami Y, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mohapatra D, Moloney GR, Nagamine T, Nagasaka Y, Nakadaira T, 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, Park KS, Parslow N, Piilonen LE, Rozanska M, Sagawa H, Saitoh S, Sakai Y, Satapathy M, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Semenov S, Senyo K, Sevior ME, Shibuya H, Sidorov V, Singh JB, Soni N, Stamen R, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Swain SK, Tajima O, Takasaki F, Tanaka M, Taylor GN, Tomura T, Trabelsi K, Tsuboyama T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Varner G, Varvell KE, Wang CH, Wang MZ, Watanabe M, Yabsley BD, Yamada Y, Yamaguchi A, Yamashita Y, Ying J, Yusa Y, Zhang J, Zhang ZP, Zheng Y, Zhilich V, Ziegler T, Zontar D. Study of CP violating effects in time dependent B0(B0)-->D(*)-/+pi+/- decays. PHYSICAL REVIEW LETTERS 2004; 93:031802. [PMID: 15323813 DOI: 10.1103/physrevlett.93.031802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2004] [Indexed: 05/24/2023]
Abstract
We report measurements of time dependent decay rates for B0(B(0))-->D((*)-/+)pi(+/-) decays and extraction of CP violation parameters containing phi(3). Using fully reconstructed D((*))pi events from a 140 fb(-1) data sample collected at the Upsilon(4S) resonance, we obtain the CP violation parameters for D(*)pi and Dpi decays, 2R(D((*))pi)sin((2phi(1)+phi(3)+/-delta(D((*))pi)), where R(D((*))pi) is the ratio of the magnitudes of the doubly Cabibbo-suppressed and Cabibbo-favored amplitudes, and delta(D((*))pi) is the strong phase difference between them. Under the assumption of delta(D((*))pi) being close to either 0 degrees or 180 degrees, we obtain |2R(D(*)pi)sin((2phi(1)+phi(3))|=0.060+/-0.040(stat)+/-0.019(syst) and |2R(Dpi)sin((2phi(1)+phi(3))|=0.061+/-0.037(stat)+/-0.018(syst).
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Abe K, Abe K, Abe N, Abe T, Adachi I, Aihara H, Akai K, Akatsu M, Akemoto M, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich AM, Ban Y, Banerjee S, Bay A, Bedny I, Bizjak I, Bondar A, Bozek A, Bracko M, Browder TE, Chao Y, Chen KF, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Cole S, Danilov M, Dragic J, Drutskoy A, Eidelman S, Eiges V, Enari Y, Epifanov D, Flanagan J, Furukawa K, Gabyshev N, Garmash A, Gershon T, Golob B, Haba J, Hara K, Hastings NC, Hayashii H, Hazumi M, Hinz L, Hokuue T, Hoshi Y, Hou WS, Hsiung YB, Huang HC, Iijima T, Ikeda H, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki H, Iwasaki M, Iwasaki Y, Kakuno H, Kamitani T, Kang JH, Kang JS, Kapusta P, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Kibayashi A, Kichimi H, Kikutani E, Kim HJ, Kim JH, Kim SK, Kinoshita K, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kumar S, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SH, Lee YJ, Lesiak T, Li J, Limosani A, Lin SW, Liventsev D, MacNaughton J, Mandl F, Marlow D, Matsumoto H, Matsumoto T, Matyja A, Michizono S, Mimashi T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mohapatra D, Moloney GR, Murakami A, Nagamine T, Nagasaka Y, Nakadaira T, Nakamura TT, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neichi K, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ogawa Y, Ohmi K, Ohshima T, Ohuchi N, Oide K, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CW, Park H, Parslow N, Piilonen LE, Root N, Rozanska M, Sagawa H, Sakai Y, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Semenov S, Senyo K, Shibuya H, Shidara T, Shwartz B, Sidorov V, Singh JB, Soni N, Stamen R, Stanic S, Staric M, Sugahara R, Sumisawa K, Sumiyoshi T, Suzuki K, Suzuki S, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Tawada M, Teramoto Y, Tomura T, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Varner G, Varvell KE, Wang CC, Wang CH, Wang MZ, Watanabe Y, Yabsley BD, Yamada Y, Yamaguchi A, Yamashita Y, Yamauchi M, Yanai H, Yang H, Ying J, Yokoyama M, Yoshida M, Yusa Y, Zhang CC, Zhang ZP, Ziegler T, Zontar D, Zürcher D. Observation of large CP violation and evidence for direct CP violation in B0-->pi(+)pi(-) decays. PHYSICAL REVIEW LETTERS 2004; 93:021601. [PMID: 15323897 DOI: 10.1103/physrevlett.93.021601] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2004] [Indexed: 05/24/2023]
Abstract
We report the first observation of CP violation in B0-->pi(+)pi(-) decays based on 152x10(6) gamma (4S)-->BB decays collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We reconstruct a B0-->pi(+)pi(-) CP eigenstate and identify the flavor of the accompanying B meson from its decay products. From the distribution of the time intervals between the two B meson decay points, we obtain A(pipi)=+0.58+/-0.15(stat)+/-0.07(syst) and S(pipi)=-1.00+/-0.21(stat)+/-0.07(syst). We rule out the CP-conserving case, A(pipi)=S(pipi)=0, at a level of 5.2 standard deviations. We also find evidence for direct CP violation with a significance at or greater than 3.2 standard deviations for any S(pipi) value.
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Kang JS, Maygarden SJ, Mohler JL, Pruthi RS. Comparison of clinical and pathological features in African-American and Caucasian patients with localized prostate cancer. BJU Int 2004; 93:1207-10. [PMID: 15180606 DOI: 10.1111/j.1464-410x.2004.04846.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To examine patient characteristics, prostate specific antigen (PSA) levels, and established preoperative and pathological prognostic factors to determine differences between Caucasian and African-American patients with localised prostate cancer, as it remains controversial whether African-American men present with more aggressive disease. PATIENTS AND METHODS One hundred consecutive patients (aged 53-76 years) undergoing radical retropubic prostatectomy (RRP) at an equal-access tertiary-care centre were retrospectively reviewed. All patients had preoperative PSA levels, a physical examination (including clinical staging), and sextant biopsy. Insurance information was also collected. The same urological oncologist determined clinical staging and performed all the RRPs, and the same genitourinary pathologist determined the Gleason grade for biopsies and surgical specimens, pathological stage, percentage of tumour involvement, and specimen weight. African-American and Caucasian patients were compared for PSA, clinical stage, pathological stage, biopsy and pathological Gleason grade, organ confinement, margin status and specimen weight. Using preoperative and pathological data, both groups were also compared for over- and under-staging and -grading. The Wilcoxon rank test with P < 0.05 was used to determine statistically significant differences. RESULTS African-American patients were more likely to be Medicaid or self-insured than Caucasian patients. Age, biopsy grade and clinical stage were not significantly different between the groups. African-American patients presented with a mean PSA level of 11.9 ng/mL and Caucasians with a mean of 8.5 ng/mL (P = 0.03). When clinical and biopsy data were compared with pathological data there were no differences between the groups in under/over-grading or under/over-staging. African-American patients had larger prostates per surgical specimen than their Caucasian counterparts (59.3 g vs 51.6 g, respectively; P = 0.04). CONCLUSIONS In a referred, equal-access system, African-American patients presented with higher serum PSA levels and had larger prostates in the surgical specimen. However, African-American patients did not present at an earlier age or with higher Gleason grade or clinical stage, nor were pathological grade and stages higher. Other pathological features were no different. African-American patients were not under- or over-staged or under- or over-graded more than their Caucasian counterparts. This retrospective study does not suggest that African-American men present with more aggressive disease.
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Abe K, Abe K, Abe T, Adachi I, Ahn BS, Aihara H, Akai K, Akatsu M, Akemoto M, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich AM, Ban Y, Banerjee S, Bay A, Bedny I, Bizjak I, Bondar A, Bozek A, Bracko M, Browder TE, Chao Y, Chen KF, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Chuvikov A, Danilov M, Dong LY, Drutskoy A, Eidelman S, Eiges V, Enari Y, Flanagan J, Fukunaga C, Furukawa K, Gabyshev N, Garmash A, Gershon T, Guo R, Haba J, Hagner C, Handa F, Hayashii H, Hazumi M, Hokuue T, Hoshi Y, Hou WS, Huang HC, Iijima T, Ikeda H, Inami K, Ishikawa A, Itoh R, Iwasaki H, Iwasaki M, Iwasaki Y, Kang JH, Kang JS, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kikutani E, Kim HJ, Kim JH, Kim SK, Kinoshita K, Koppenburg P, Korpar S, Krokovny P, Kulasiri R, Kuzmin A, Kwon YJ, Lee SH, Lesiak T, Li J, Limosani A, Lin SW, Liventsev D, Mandl F, Matsumoto T, Matyja A, Michizono S, Mimashi T, Mitaroff W, Miyabayashi K, Miyata H, Mohapatra D, Mori T, Nagamine T, Nagasaka Y, Nakamura TT, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ogawa Y, Ohmi K, Ohnishi Y, Ohshima T, Ohuchi N, Okabe T, Okuno S, Ostrowicz W, Ozaki H, Palka H, Park CW, Park H, Parslow N, Piilonen LE, Root N, Sagawa H, Saitoh S, Sakai Y, Satapathy M, Satpathy A, Schneider O, Schümann J, Schwartz AJ, Semenov S, Senyo K, Seuster R, Sevior ME, Shibuya H, Shidara T, Shwartz B, Sidorov V, Singh JB, Soni N, Stanic S, Staric M, Sugi A, Sumisawa K, Sumiyoshi T, Suzuki S, Suzuki SY, Takasaki F, Tamai K, Tamura N, Tanaka M, Tawada M, Taylor GN, Teramoto Y, Tomura T, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Uno S, Varner G, Wang CC, Wang CH, Wang JG, Watanabe Y, Won E, Yabsley BD, Yamada Y, Yamaguchi A, Yamashita Y, Yamauchi M, Yanai H, Yang H, Yoshida M, Yusa Y, Zhang ZP, Zheng Y, Zhilich V, Zontar D. Upper bound on the decay tau-->microgamma from the Belle detector. PHYSICAL REVIEW LETTERS 2004; 92:171802. [PMID: 15169139 DOI: 10.1103/physrevlett.92.171802] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2003] [Indexed: 05/24/2023]
Abstract
We have performed a search for the lepton-flavor-violating decay tau-->microgamma using a data sample of 86.3 fb(-1) accumulated by the Belle detector at KEK. No evidence for a signal is seen, and we set an upper limit for the branching fraction of B(tau-->microgamma)<3.1 x 10(-7) at the 90% confidence level.
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Kakuno H, Abe K, Abe K, Adachi I, Aihara H, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich AM, Ban Y, Banerjee S, Bizjak I, Bondar A, Bozek A, Bracko M, Browder TE, Chao Y, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Chuvikov A, Cole S, Danilov M, Dash M, Dong LY, Dragic J, Drutskoy A, Eidelman S, Eiges V, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Haba J, Hagner C, Hara T, 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 Y, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim HJ, Kim JH, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kwon YJ, Leder G, Lee SH, Lesiak T, Li J, Limosani A, Lin SW, MacNaughton J, Mandl F, Matyja A, Mikami Y, Mitaroff W, Miyabayashi K, Miyata H, Moloney GR, Mori T, Nagamine T, Nagasaka Y, Nakadaira T, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Park CW, Park H, Park KS, Parslow N, Peak LS, Piilonen LE, Sagawa H, Saitoh S, Sakai Y, Schneider O, Schwartz AJ, Semenov S, Senyo K, Sevior ME, Shibuya H, Shwartz B, Sidorov V, Singh JB, Soni N, Stanic S, Staric M, Sugiyama A, Sumiyoshi T, Suzuki SY, Tajima O, Takasaki F, Tamai K, Tanaka M, Teramoto Y, Tomura T, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Varner G, Varvell KE, Wang CC, Wang CH, Wang JG, Wang MZ, Watanabe M, Watanabe Y, Yabsley BD, Yamada Y, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yanai H, Yang H, Yuan Y, Yusa Y, Zhang J, Zhang ZP, Zhilich V, Zontar D. Measurement of /V(ub)/ using inclusive B-->X(u)lnu decays with a novel X(u)-reconstruction method. PHYSICAL REVIEW LETTERS 2004; 92:101801. [PMID: 15089194 DOI: 10.1103/physrevlett.92.101801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2003] [Indexed: 05/24/2023]
Abstract
We report the measurement of an inclusive partial branching fraction for charmless semileptonic B decay and the extraction of /V(ub)/. Candidates for B-->X(u)lnu are identified with a novel X(u) reconstruction method based on neutrino reconstruction via missing 4-momentum and a technique called "simulated annealing." Based on 86.9 fb(-1) of data taken with the Belle detector, we obtain DeltaB(B-->X(u)lnu;M(X)<1.7 GeV/c2,q2>8.0 GeV2/c2)=[7.37+/-0.89(stat)+/-1.12(syst)+/-0.55(b-->c)+/-0.24(b-->u)]x10(-4) and determine |V(ub)|=[4.66+/-0.28(stat)+/-0.35(syst)+/-0.17(b-->c)+/-0.08(b-->u)+/-0.58(theory)]x10(-3).
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Tajima O, Abe K, Abe K, Aihara H, Akatsu M, Aulchenko V, Aushev T, Bakich AM, Bay A, Bizjak I, Bondar A, Bozek A, Bracko M, Browder TE, Chao Y, Cheon BG, Chistov R, Choi Y, Choi YK, Chuvikov A, Danilov M, Dong LY, Eidelman S, Eiges V, Fang F, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Haba J, Hagner C, Handa F, Hasuko K, Hazumi M, Higuchi I, Hokuue T, Hoshi Y, Hou WS, Huang HC, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kichimi H, Kim HJ, Kim H, Kim JH, Kim SK, Kinoshita K, Koppenburg P, Korpar S, Krizan P, Krokovny P, 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 H, Matsumoto T, Matyja A, Mikami Y, Mitaroff W, Miyabayashi K, Miyata H, Mohapatra D, Moloney GR, Nagamine T, Nagasaka Y, Nakano E, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Park CW, Park KS, Parslow N, Piilonen LE, Sagawa H, Saigo M, Sakai Y, Schneider O, Schümann J, Schwartz AJ, Semenov S, Senyo K, Shibuya H, Shwartz B, Sidorov V, Singh JB, Soni N, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Suzuki SY, Takasaki F, Tamai K, Tamura N, Teramoto Y, Tomura T, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Uno S, Varner G, Wang CC, Wang JG, Watanabe Y, Yabsley BD, Yamada Y, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yusa Y, Zhang ZP, Zhilich V, Zontar D. Observation of the radiative decay D0-->phigamma. PHYSICAL REVIEW LETTERS 2004; 92:101803. [PMID: 15089196 DOI: 10.1103/physrevlett.92.101803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2003] [Indexed: 05/24/2023]
Abstract
We report the observation of the decay D0-->phigamma with a statistical significance of 5.4sigma in 78.1 fb(-1) of data collected by the Belle experiment at the KEKB e+e- collider. This is the first observation of a flavor-changing radiative decay of a charmed meson. The Cabibbo- and color-suppressed decays D0-->phipi(0), phieta are also observed for the first time. We measure branching fractions B(D0-->phigamma)=[2.60(+0.70)(-0.61)(stat)+0.15-0.17(syst)] x 10(-5), B(D0-->phipi(0))=[8.01+/-0.26(stat)+/-0.47(syst)] x 10(-4), and B(D0-->phieta)=[1.48+/-0.47(stat)+/-0.09(syst)] x 10(-4).
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