$B_s$ Semileptonic Decays to $D_s$ and $D_s^{\ast }$ in Bethe-Salpeter Method

Abstract

Using the relativistic Bethe-Salpeter method, the electron energy spectrum and the semileptonic decay widths of $B_s^0\to D_s^{-}{\ell }^{+}{\nu }_{\ell }$ and $B_s^0\to D_s^{\ast -}{\ell }^{+}{\nu }_{\ell }$ are calculated. We obtained large branching ratios, $Br(B_s\to D_{s}e{\nu }_e)=(2.85\pm 0.35)$ and $Br(B_s\to D_s^{\ast }e{\nu }_e)=(7.09\pm 0.88)$, which can be easily detected in the future experiment.

3 pages, 3 figures.

References in corpus (4)

• Charmless non-leptonic B_s decays to PP, PV and VV final states in the pQCD approach
• Measurement of the Decay B_s^0 -> D_s^- pi^+ and Evidence for B_s^0 -> D_s^{+/-} K^{-/+} in e+e- Annihilation at sqrt(s)~10.87 GeV
• B-Meson Wave Function through A Comparative Analysis of the $B\to \pi$, $K$ Transition Form Factors
• $B\to K$ Transition Form Factor with Tensor Current within the $k_T$ Factorization Approach

Cited by in corpus (1)

• $B_s\to D_s(3040)$ form factors and $B_s$ decays into $D_s(3040)$