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

الأصل · EN

We make a detailed analysis of the BBρ(DDρ) and B*Bρ(D*Dρ) strong couplings gBBρ(gDDρ) and gB*Bᵨ(gD*Dᵨ) using QCD light cone sum rules(LCSR). The existing some negligence is pointed out in the previous LCSR calculation on gB*Bᵨ (gDρ) and an updated estimate is presented. Our findings can be used to understand the behavior of the B,D → ρ semileptonic form factors at large momentum transitions.