Some of semileptonic and nonleptonic decays of Bc meson in a Bethe-Salpeter relativistic quark model

• Published in: Science China. Physics, mechanics & astronomy Vol. 58; no. 7; pp. 1 - 13
• Main Authors: Chang, ChaoHsi, Fu, HuiFeng, Wang, GuoLi, Zhang, JinMei
• Format: Journal Article
• Language: English
• Published: Beijing Science China Press 01.07.2015; Springer Nature B.V
• Subjects: Astronomy; Classical and Continuum Physics; Observations and Techniques; Physics; Physics and Astronomy; Quark models; 071001; decay; meson; Bethe-Salpeter quark model
• ISSN: 1674-7348; 1869-1927
• DOI: 10.1007/s11433-015-5671-x

The semileptonic decays and the nonleptonic decays B c + → P ( V ) + L , where P ( V ) denotes a pseudoscalar (vector) charmonium or -meson, and L denotes a light meson, are studied in the framework of improved instantaneous Bethe-Salpeter (BS) equation and the Mandelstam formula. The numerical results (width and branching ratio of the decays) are presented in tables, and in order to compare conveniently, those obtained by other approaches are also put in the relevant tables. Based on the fact that the ratio estimated here is in good agreement with the observation by LHCb , one may conclude that with respect to the decays the present framework works quite well.