A Heavy-Light Chiral Quark Model

Details A Heavy-Light Chiral Quark Model A Heavy-Light Chiral Quark Model

2002-06-18

arxiv.org/abs/hep-ph/0206158v2

Phys.Rev. D66 (2002) 074001

Physics

High Energy Physics

High Energy Physics - Phenomenology

31 pages, 13 figures, RevTex4.0

Scientific paper

10.1103/PhysRevD.66.074001

We present a new chiral quark model for mesons involving a heavy and a light (anti-) quark. The model relates various combinations of a quark - meson coupling constant and loop integrals to physical quantities. Then, some quantities may be predicted and some used as input. The extension from other similar models is that the present model includes the lowest order gluon condensate of the order (300 MeV)^4 determined by the mass splitting of the 0^- and the 1^- heavy meson states. Within the model, we find a reasonable description of parameters such as the decay constants f_B and f_D, the Isgur-Wise function and the axial vector coupling g_A in chiral perturbation theory for light and heavy mesons.

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