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Study of the possible role of triangle singularities in ${B^ - }\, \to {D^{*0}}{\pi ^ - }{\pi ^0}\eta $ and ${B^ - }\, \to {D^{*0}}{\pi ^ - }{\pi ^ + }{\pi ^ - }$. EPJ WEB OF CONFERENCES 2019. [DOI: 10.1051/epjconf/201919904005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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3
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Triangle singularity enhancing isospin violation in $D_s^ + \to {\pi ^ + }{\pi ^0}{f_0}(980)$ and $\overline B _s^0 \to J/\psi {\pi ^0}{f_0}(980)$ decays. EPJ WEB OF CONFERENCES 2019. [DOI: 10.1051/epjconf/201919904008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
We present results for the analysis of the B+ → J/ψϕK+ which shows the contribution of two resonances, the X(4140) and X(4160) and a cusp at the $D_s^*\bar D_s^*$ threshold tied to the molecular character of the X(4160) resonance. In the second part we present the results for the theoretical approach to the new Ωcstates from the molecular perspective. In both cases we compare with results of the LHCb collaboration.
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Traces of the hidden-charm S=−1 pentaquark in the Λ b→ J/Ψ ηΛ decay. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201713706015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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6
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The Bc→ J/Ψ KDweak decay and its relation with the D*s0(2317) resonance. EPJ WEB OF CONFERENCES 2016. [DOI: 10.1051/epjconf/201613002002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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7
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The ρ( ω)/ B*( B) system and bound states in the unitary local Hidden Gauge approach. EPJ WEB OF CONFERENCES 2016. [DOI: 10.1051/epjconf/201613002003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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8
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A three body state with J=3 in the ρB*B̅N*interaction. EPJ WEB OF CONFERENCES 2016. [DOI: 10.1051/epjconf/201613002004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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9
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Predictions for the [Formula: see text] decay. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2015; 75:218. [PMID: 26005369 PMCID: PMC4437773 DOI: 10.1140/epjc/s10052-015-3438-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 04/28/2015] [Indexed: 06/04/2023]
Abstract
We calculate the shape of the [Formula: see text] and [Formula: see text] invariant mass distributions in the [Formula: see text] and [Formula: see text] decays that are dominated by the [Formula: see text] resonance. The weak interaction part is the same for both processes and the hadronization into the different meson-baryon channels in the final state is given by symmetry arguments. The most important feature is the implementation of the meson-baryon final-state interaction using two chiral unitary models from different theoretical groups. Both approaches give a good description of antikaon-nucleon scattering data, the complex energy shift in kaonic hydrogen and the line shapes of [Formula: see text] in photoproduction, based on the two-pole scenario for the [Formula: see text]. We find that this reaction reflects more the higher mass pole and we make predictions of the line shapes and relative strength of the meson-baryon distributions in the final state.
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11
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Vector meson-baryon dynamics in photoproduction reactions around 2 GeV. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20148105023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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12
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Isospin breaking and f0(980)- a0(980) mixing in the η(1405) → π0f0(980) reaction. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20147303005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Signature of an h1state from J/ψ→ ηK* 0K̄* 0and theoretical description of the Zc(3900) and Zc(4020) as DD̄* and D* D̄* molecular states. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20148101011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kaonic systems. EPJ WEB OF CONFERENCES 2012. [DOI: 10.1051/epjconf/20123701012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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16
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Prediction of narrow N* and Λ* resonances with hidden charm above 4 GeV. PHYSICAL REVIEW LETTERS 2010; 105:232001. [PMID: 21231450 DOI: 10.1103/physrevlett.105.232001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Indexed: 05/30/2023]
Abstract
The interaction between various charmed mesons and charmed baryons is studied within the framework of the coupled-channel unitary approach with the local hidden gauge formalism. Several meson-baryon dynamically generated narrow N* and Λ* resonances with hidden charm are predicted with mass above 4 GeV and width smaller than 100 MeV. The predicted new resonances definitely cannot be accommodated by quark models with three constituent quarks and can be looked for in the forthcoming PANDA/FAIR experiments.
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Novel interpretation of the "θ+ (1540) pentaquark" peak. PHYSICAL REVIEW LETTERS 2010; 105:092001. [PMID: 20868153 DOI: 10.1103/physrevlett.105.092001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2010] [Indexed: 05/29/2023]
Abstract
We use a theoretical model of the γd→K+ K- np reaction adapted to the experiment done at LEPS where a peak was observed and associated with the Θ+ (1540) pentaquark. The study shows that the method used in the experiment to assign momenta to the undetected proton and neutron, together with the chosen cuts, necessarily creates an artificial broad peak in the assumed K+ n invariant mass in the region of the claimed Θ+ (1540), such that the remaining strength seen for the experimental peak is compatible with a fluctuation of 2σ significance.
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Exotic states in the S=1 N-pi-K system and low-lying 1/2+ S=-1 resonances. EPJ WEB OF CONFERENCES 2010. [DOI: 10.1051/epjconf/20100307016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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N* resonances in the ππ Nsystem. EPJ WEB OF CONFERENCES 2010. [DOI: 10.1051/epjconf/20100303009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Simultaneous photoproduction of eta and pi0 mesons on the proton. PHYSICAL REVIEW LETTERS 2008; 100:052003. [PMID: 18352363 DOI: 10.1103/physrevlett.100.052003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2007] [Indexed: 05/26/2023]
Abstract
The analysis of the gammap-->etapi(0)p reaction has been performed using data from the GRAAL experiment. The total and differential cross sections and the beam asymmetry have been obtained from threshold up to 1.5 GeV of beam energy. The two resonances S11(1535) and Delta(1700) are expected to be excited in the intermediate states of this reaction. The results are used to test predictions based on the assumption that both resonances are dynamically generated from the meson-baryon interaction provided by chiral Lagrangians. The term involving the Delta(1700) excitation, followed by the decay into etaDelta(1232), is found to be dominant.
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Evidence for the two-pole structure of the lambda(1405) resonance. PHYSICAL REVIEW LETTERS 2005; 95:052301. [PMID: 16090868 DOI: 10.1103/physrevlett.95.052301] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2005] [Indexed: 05/03/2023]
Abstract
The K- p --> pi0pi0sigma0 reaction is studied within a chiral unitary model. The distribution of pi0sigma0 states forming the lambda(1405) shows, in agreement with a recent experiment, a peak at 1420 MeV and a relatively narrow width of gamma = 38 MeV. The mechanism for the reaction is largely dominated by the emission of a pi0 prior to the K- p interaction leading to the lambda(1405). This ensures the coupling of the lambda(1405) to the K- p channel, thus maximizing the contribution of the second state found in chiral unitary theories, which is narrow and of higher energy than the nominal lambda(1405). This is unlike the pi- p --> K0pisigma reaction, which gives more weight to the pole at lower energy and with a larger width. The data of these two experiments, together with the present theoretical analysis, provide firm evidence of the two-pole structure of the lambda(1405).
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22
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Spin, parity, and nature of the xi(1620) resonance. PHYSICAL REVIEW LETTERS 2002; 89:252001. [PMID: 12484876 DOI: 10.1103/physrevlett.89.252001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2002] [Indexed: 05/24/2023]
Abstract
Using a unitary extension of chiral perturbation theory with a lowest-order s-wave SU(3) chiral Lagrangian we study low-energy meson-baryon scattering in the strangeness S=-2 sector. A scattering-matrix pole is found around 1605 MeV which corresponds to an s-wave Xi resonance with J(P)=1/2(-). We identify this resonance with the Xi(1620) state, quoted by the Particle Data Group with I=1/2 but with unknown spin and parity. The addition of the S=-2 state to the recently computed Lambda(1670), Sigma(1620), and N(1535) states completes the octet of J(P)=1/2(-) resonances dynamically generated in this chiral unitary approach.
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Meson exchange currents in the 3He( gamma, pi +)3H reaction. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1996; 54:3160-3169. [PMID: 9971690 DOI: 10.1103/physrevc.54.3160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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25
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Charged current neutrino-nucleus reaction cross sections at intermediate energies. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1996; 53:1409-1415. [PMID: 9971079 DOI: 10.1103/physrevc.53.1409] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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26
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Two and three nucleon induced photon absorption. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1996; 53:305-313. [PMID: 9970940 DOI: 10.1103/physrevc.53.305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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27
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Roper excitation in alpha -proton scattering. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1996; 53:277-284. [PMID: 9970937 DOI: 10.1103/physrevc.53.277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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28
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Short range correlations in the weak decay of Lambda hypernuclei. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1995; 51:2477-2487. [PMID: 9970330 DOI: 10.1103/physrevc.51.2477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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29
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Pion cloud contribution to K+-nucleus scattering. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1995; 51:237-251. [PMID: 9970060 DOI: 10.1103/physrevc.51.237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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30
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Two nucleon induced Lambda decay and the neutron to proton induced ratio. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1994; 50:2314-2322. [PMID: 9969918 DOI: 10.1103/physrevc.50.2314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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31
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32
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Core polarization phenomena in pion-nucleus charge-exchange reactions above the delta resonance. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1993; 48:2395-2402. [PMID: 9969095 DOI: 10.1103/physrevc.48.2395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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33
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Inclusive quasielastic neutrino reactions in 12C and 16O at intermediate energies. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1993; 48:1246-1258. [PMID: 9968955 DOI: 10.1103/physrevc.48.1246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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34
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Pionic decay of Lambda hypernuclei. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1993; 47:1478-1488. [PMID: 9968593 DOI: 10.1103/physrevc.47.1478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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35
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High-energy pion-induced double charge exchange and isovector renormalization. PHYSICAL REVIEW LETTERS 1993; 70:146-149. [PMID: 10053714 DOI: 10.1103/physrevlett.70.146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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36
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Absorption contribution to the pion double-charge-exchange reaction. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1992; 46:2406-2414. [PMID: 9968373 DOI: 10.1103/physrevc.46.2406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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37
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Semiphenomenological approach to nucleon properties in nuclear matter. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1992; 46:1697-1709. [PMID: 9968290 DOI: 10.1103/physrevc.46.1697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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38
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Resonant formation of pionic atoms with neutron collisions. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1992; 46:158-163. [PMID: 9968093 DOI: 10.1103/physrevc.46.158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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39
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Enhancement of the nuclear dipole sum: Microscopic approach. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1992; 45:764-769. [PMID: 9967812 DOI: 10.1103/physrevc.45.764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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40
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Meson exchange currents in pion double charge exchange. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1991; 44:2480-2483. [PMID: 9967681 DOI: 10.1103/physrevc.44.2480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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41
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Width of bound eta in nuclei. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1991; 44:738-746. [PMID: 9967458 DOI: 10.1103/physrevc.44.738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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42
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Pion-induced elastic and inelastic scattering above the 3,3 resonance. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1991; 44:468-476. [PMID: 9967418 DOI: 10.1103/physrevc.44.468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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43
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Production of pionic atoms with the (e,e') reaction. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1991; 43:1937-1941. [PMID: 9967242 DOI: 10.1103/physrevc.43.1937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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44
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Pion-nucleus single-charge exchange above the resonance. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1990; 42:2454-2462. [PMID: 9966998 DOI: 10.1103/physrevc.42.2454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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45
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Production of pionic atoms with the ( pi -, pi +) reaction. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1990; 42:690-692. [PMID: 9966757 DOI: 10.1103/physrevc.42.690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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46
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Microscopic s-wave optical potential for slow pions scattered by a nucleus. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1989; 40:1308-1315. [PMID: 9966105 DOI: 10.1103/physrevc.40.1308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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47
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Calculation of the first-order s-wave optical potential in pionic atoms. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1989; 39:595-607. [PMID: 9955233 DOI: 10.1103/physrevc.39.595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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48
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Inclusive pion-nucleus double charge exchange. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1989; 39:209-215. [PMID: 9955178 DOI: 10.1103/physrevc.39.209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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49
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S-wave optical potential in pionic atoms. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1988; 37:194-214. [PMID: 9954429 DOI: 10.1103/physrevc.37.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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50
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Comment on "Comparison of approximate chiral-dynamical pi N--> pi pi N models used in A( pi,2 pi ) calculations". PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1986; 34:2349-2350. [PMID: 9953723 DOI: 10.1103/physrevc.34.2349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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