On the D*D$π$ and B*B$π$ coupling constants in the effective quark model with chiral symmetry

Details On the D*D$π$ and B*B$π$ coupling constants in the effective quark model with chiral symmetry On the D*D$π$ and B*B$π$ coupling constants in the effective quark model with chiral symmetry

1997-10-25

arxiv.org/abs/hep-ph/9710471v1

Nuovo Cim.A111:59-65,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, Latex, no figures

Scientific paper

The coupling constants of D*D$\pi$ and B*B$\pi$ strong interactions are computed in the effective quark model with chiral symmetry incorporating Heavy quark effective theory (HQET) and Chiral perturbation theory at the quark level with linear realization of chiral U(3)XU(3) symmetry. We predict g(D*D$\pi$) = 5.2 and g(B*B$\pi$) = 14.3. The corrections of large heavy quark mass expansion to the constants g(D*D$\pi$) and g(B*B$\pi$) are calculated and make up less than 1 per cent.

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