Strong Couplings of Heavy Mesons to A Light Vector Meson in QCD

Details Strong Couplings of Heavy Mesons to A Light Vector Meson in QCD Strong Couplings of Heavy Mesons to A Light Vector Meson in QCD

2002-08-17

arxiv.org/abs/hep-ph/0208168v2

Phys.Rev. D65 (2002) 076005

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, latex, 2 figures, version appearing in PRD, typos corrected

Scientific paper

10.1103/PhysRevD.65.076005

We make a detailed analysis of the $BB\rho(DD\rho)$ and $B^*B\rho(D^{*}D\rho)$ strong couplings $g_{BB\rho}(g_{DD\rho})$ and $g_{B^*B\rho}(g_{D^{*}D\rho})$ using QCD light cone sum rules(LCSR). The existing some negligence is pointed out in the previous LCSR calculation on $g_{B^*B\rho} (g_{D^{\ast}D\rho}$) and an updated estimate is presented. Our findings can be used to understand the behavior of the $B,D \to \rho$ semileptonic form factors at large momentum transitions.

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