QCD Sum Rules Study of the Semileptonic $B_s(B^{\pm })(B^0)\to D_s[1968](D^0)(D^{\pm })l\nu$ Decays

Abstract

The form factors of the semileptonic $B_q\to D_q(J^P=0^{-})\ell \nu$ with $q=s,u,d$ transitions are calculated in the framework of three point QCD sum rules. Using the $q^2$ dependencies of the relevant form factors, the total decay width and the branching ratio for these decays are also evaluated. A comparison of our results for the form factors of $B\to D\ell \nu$ with the lattice QCD predictions within heavy quark effective theory and zero recoil limit is presented. Our results of the branching ratio are in good agreement with the constituent quark meson model for ($q=s,u,d$) and experiment for ($q=u,d$). The result of branching ratio for $B_s\to D_s(1968)\ell \nu$ indicates that this transition can also be detected at LHC in the near future.

19 Pages, 4 Figures and 3 Tables

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Cited by in corpus (8)

• Weak decays of $B_s$ mesons to $D_s$ mesons in the relativistic quark model
• Exclusive $B_s$ decays to the charmed mesons $D_s^{+}(1968,2317)$ in the standard model
• Analysis of the rare semileptonic $B_c \rar P(D,D_s) l^{+}l^{-}/ν\barν$ decays within QCD sum rules
• A comprehensive study on the semileptonic decay of heavy flavor mesons
• Self-consistent light-front quark model analysis of $B\to D\ell {\nu }_{\ell }$ transition form factors
• The ratio $\mathcal{R}(D_s)$ for $B_s\to D_s\ell {\nu }_{\ell }$ by using the QCD light-cone sum rules within the framework of heavy quark effective field theory
• Prediction of various observables for $B_s^0\to D_s^{(\ast )-}{\ell }^{+}{\nu }_{\ell }$ within covariant confined quark model
• $B_s$ mesons: semileptonic and nonleptonic decays