Relativistic Description of Exclusive Semileptonic Decays of Heavy Mesons

Abstract

Using quasipotential approach, we have studied exclusive semileptonic decays of heavy mesons with the account of relativistic effects. Due to more complete relativistic description of the $s$ quark more precise expressions for semileptonic form factors are obtained. Various differential distributions in exclusive semileptonic decays of heavy mesons are calculated. It is argued that consistent account of relativistic effects and HQET motivated choice of the parameters of quark-antiquark potential allow to get reliable value for the ratio $A_2(0)/A_1(0)$ in the $D\to K^{\ast }l{\nu }_l$ decay as well as the ratio~$\Gamma (D\to K^{\ast }l{\nu }_l)/\Gamma (D\to Kl{\nu }_l)$. All calculated branching ratios are in accord with available experimental data.

18 pages, LATEX, 2 figures inclosed + 4 Postscript figures

References in corpus (2)

• Exclusive semileptonic decays of B mesons into light mesons in the relativistic quark model
• RELATIVISTIC DESCRIPTION OF THE EXCLUSIVE RARE RADIATIVE DECAYS OF B MESONS

Cited by in corpus (10)

• Weak decays of the B_c meson to charmonium and D mesons in the relativistic quark model
• Semileptonic $D_{(s)}$-meson decays in the light of recent data
• New analysis of semileptonic B decays in the relativistic quark model
• Charm and Bottom Baryon Decays in the Bethe-Salpeter Approach: Heavy to Heavy Semileptonic Transitions
• Relativistic Description of Exclusive Heavy-to-Light Semileptonic Decays $B\to \pi (\rho )e\nu$
• Rare radiative B decays to orbitally excited K mesons
• Measurement of the Ratio of the Vector to Pseudoscalar Charm Semileptonic Decay Rate Γ(D+ > ANTI-K*0 mu+ nu)/Γ(D+ > ANTI-K0 mu+ nu)
• Correspondence between QCD sum rules and constituent quark models
• Charm and Bottom Semileptonic Decays
• Determination of V_cb from exclusive decays in a relativistic quark model