Extended nonlocal chiral-quark model for the heavy-light quark systems

Abstract

In this talk, we report the recent progress on constructing a phenomenological effective model for the heavy-light quark systems, which consist of (u,d,s,c,b) quarks, i.e. extended nonlocal chiral-quark model (ExNLChQM). We compute the heavy-meson weak-decay constants to verify the validity of the model. From the numerical results, it turns out that (f_D, f_B, f_{D_s}, f_{B_s})=(207.54,208.13,262.56,262.39) MeV. These values are in relatively good agreement with experimental data and various theoretical estimations.

3 pages, 4 figures, Talk given at the 20th International IUPAP Conference on Few-Body Problems in Physics (FB20), 20~25 August 2012, Fukuoka, Japan

References in corpus (8)

• Decay constants and radiative decays of heavy mesons in light-front quark model
• Relativistic treatment of the decay constants of light and heavy mesons
• Decay constants of the heavy-light mesons from the field correlator method
• Analyses of decay constants and light-cone distribution amplitudes for s-wave heavy meson
• The leading-twist pion and kaon distribution amplitudes from the QCD instanton vacuum
• Light quark mass dependence of the $D$ and $D_s$ decay constants
• Extended nonlocal chiral-quark model for the D- and B-meson weak-decay constants
• Heavy pseudoscalar-meson decay constants with strangeness from the extended nonlocal chiral-quark model