Λc* in a coupled-channel baryon-meson scattering

  • Possible structures and properties of some excited states of Λc+ dynamically generated in the coupled-channel P-wave meson-baryon scattering are studied by solving the Bethe-Salpeter(BS) equation in the framework of the Chiral Unitary Approach. It is shown that both Λc+(2765) and Λc+(2940) could be generated dynamically and could be compound states with multi-configuration molecular-like structures. The couplings of the generated states to various reaction channels are also calculated. Moreover, two highly excited states, Λc+(3024) and Λc+(3134), are predicted.
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  • [1] Particle Data Group, J. Phys. G, 2010, 37: 0750212 Aubert B et al. (BABAR collaboratiob). Phys. Rev. Lett., 2007, 98: 0120013 Mizuk R et al. (Belle collaboratiob). Phys. Rev. Lett., 2007, 98: 2620014 Mizuk R et al. (Belle collaboratiob). Phys. Rev. Lett., 2005, 94: 1220025 Chistov R et al. (Belle collaboratiob). Phys. Rev. Lett., 2006, 97: 1620016 Artuso M et al. (CLEO collaboratiob). Phys. Rev. Lett., 2001, 86: 4479-44827 Capstick S et al. Phys. Rev. D, 1986, 34: 28098 HE X G et al. Euro. Phys. J. C, 2007, 51: 8839 CHEN C et al. Phys. Rev. D, 2007, 75: 09401710 Ebert D et al. Phys. Lett. B, 2008, 659: 612 (and references therein.)11 DONG Y B et al. Phys. Rev. D, 2010, 81: 014006; 82: 034035 (and references therein.)12 Roberts W et al. Int. J. Mod. Phys. A, 2008, 23: 2817 (and references therein.)13 Oller J A Phys. Rev. D, 2005, 71: 05403014 Oller J A, Oset E. Phys. Rev. D, 1999, 60: 07402315 GUO F K et al. Phys. Lett. B, 2006, 641: 278; 647: 133 (and references therein.)16 Hofmann J, Lutz M. Nucl.Phys. A, 2006, 763: 90-139 (and references therein.)17 Oller A et al. Prog. Part. Phys., 2000, 45: 157; Phys. Rev. C, 2004, 70: 14-34; Nucl. Phys. A, 1997, 620: 438; Phys. Rev. Lett., 1998, 80: 3452; Phys. Rev. D, 1999, 59: 074001; 60: 074023; Phys. Lett. B, 2001, 59: 263; Roca L et al. Phys. Rev. D, 2005, 72: 014002; Oset E et al. Nucl. Phys. A, 1998, 635: 99; Kaiser N et al. Nucl. Phys. A, 1997, 612: 297; Krippa B. Phys. Rev. C, 1998, 58: 1333; Krippa B et al. Phys. Rev. C, 1998, 58: 1634; Kaiser N. Eur. Phys. J. A, 1998, 3: 307; Nieves J et al. Phys. Lett. B, 1999, 455: 30; Markushin V E. Eur. Phys. J. A, 2000, 8: 389; Meiβner U.-G. et al. Nucl. Phys. A, 2000, 673: 31118 GUO F K et al. Nucl. Phys. A, 2006, 773: 78-94
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LIANG Wei-Hong, QIU Yu-Feng, HU Jian-Xiong and SHEN Peng-Nian. Λc* in a coupled-channel baryon-meson scattering[J]. Chinese Physics C, 2011, 35(1): 16-21. doi: 10.1088/1674-1137/35/1/004
LIANG Wei-Hong, QIU Yu-Feng, HU Jian-Xiong and SHEN Peng-Nian. Λc* in a coupled-channel baryon-meson scattering[J]. Chinese Physics C, 2011, 35(1): 16-21.  doi: 10.1088/1674-1137/35/1/004 shu
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Received: 2010-10-03
Revised: 2010-06-01
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Λc* in a coupled-channel baryon-meson scattering

Abstract: Possible structures and properties of some excited states of Λc+ dynamically generated in the coupled-channel P-wave meson-baryon scattering are studied by solving the Bethe-Salpeter(BS) equation in the framework of the Chiral Unitary Approach. It is shown that both Λc+(2765) and Λc+(2940) could be generated dynamically and could be compound states with multi-configuration molecular-like structures. The couplings of the generated states to various reaction channels are also calculated. Moreover, two highly excited states, Λc+(3024) and Λc+(3134), are predicted.

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