Form factors of the B-S-transitions in the covariant quark model

Abstract

In the wake of exploring uncertainty in the full angular distribution of the $B\to K\pi +{\mu }^{+}{\mu }^{-}$ caused by the presence of the intermediate scalar $K_0^{\ast }$ meson, we perform the straightforward calculation of the $B(B_s)\to S$ (S is a scalar meson) transition form factors in the full kinematical region within the covariant quark model. We restrict ourselves by the scalar mesons below 1 GeV: $a_0(980),f_0(500),f_0(980),K_0^{\ast }(800)$. As an application of the obtained results we calculate the widths of the semileptonic and rare decays $B(B_s)\to S\ell \bar{\nu }$, $B(B_s)\to S\ell \bar{\ell }$ and $B(B_s)\to S\nu \bar{\nu }$. We compare our results with those obtained in other approaches.

13 pages, 5 figures, discussion and references added, to appear in Phys. Rev. D

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Cited by in corpus (10)

• Analyzing new physics in the decays ${\bar{B}}^0\to D^{(\ast )}{\tau }^{-}{\bar{\nu }}_{\tau }$ with form factors obtained from the covariant quark model
• Study of $B_c$ decays into charmonia and $D$ mesons
• Test of the multiquark structure of $a_1(1420)$ in strong two-body decays
• ALP production in weak mesonic decays
• Study of $B_{u,d,s}\to K_0^{\ast }(1430)P$ and $K_0^{\ast }(1430)V$ decays within QCD factorization
• Chiral dynamics and S-wave contributions in ${\bar{B}}^0/D^0\to {\pi }^{\pm }\eta l^{\mp }\nu$ decays
• $B_c^{\ast }$ meson parameters and radiative decay width within the covariant confined quark model
• Production of Chern-Simons bosons in decays of mesons
• $B\to \rho$ Decay Form Factors from Covariant Confined Quark Model
• Transition form factors for $D/B$ to $a_0(980)$ from light-cone QCD sum rules