Semileptonic $B_{(s)}\to a_1(K_1){\ell }^{+}{\ell }^{-}$ decays via the light-cone sum rules with $B$-meson distribution amplitudes

Abstract

The form factors of semileptonic $B_{(s)}\to a_1(K_1){\ell }^{+}{\ell }^{-}$, $\ell =\tau ,\mu ,e$ transitions are investigated in the framework of the light-cone sum rules with $B$-meson distribution amplitudes, which play an important role in exclusive $B$ decays. The $B$-meson distribution amplitudes, ${\phi }_{\pm }(\omega )$ are a model-dependent form, so we consider four different parameterizations which can provide a reasonable description of ${\phi }_{\pm }(\omega )$ from QCD corrections. The branching fractions of these transitions are calculated. For a better analysis, a comparison of our results with the prediction of other models is provided.

14 pages, 5 figures

References in corpus (5)

• Form Factors from Light-Cone Sum Rules with B-Meson Distribution Amplitudes
• SCET sum rules for B->P and B->V transition form factors
• K1(1270)-K1(1400) Mixing Angle and New-Physics Effects in B to K1 l+ l- Decays
• Analysis of the $B\to a_1(1260)$ form-factors with light-cone QCD sum rules
• FCNC transition of $B$ to $a_1$ with LCSR

Cited by in corpus (2)

• Probing New Physics with $\bar{B}\to \rho (770){\ell }^{-}{\bar{\nu }}_{\ell }$ and $\bar{B}\to a_1(1260){\ell }^{-}{\bar{\nu }}_{\ell }$
• Vertex renormalization and hard scattering symmetry breaking corrections to $B$ to axial vector meson form factors at large recoil