Decay $B\to K^{\ast }(\to K\pi ){\ell }^{+}{\ell }^{-}$ in covariant quark model

Abstract

Our article is devoted to the study of the rare $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$~decay where $\ell =e,\mu ,\tau$. We compute the relevant form factors in the framework of the covariant quark model with infrared confinement in the full kinematical momentum transfer region. The calculated form factors are used to evaluate branching fractions and polarization observables in the cascade decay $B\to K^{\ast }(\to K\pi ){\ell }^{+}{\ell }^{-}$. We compare the obtained results with available experimental data and the results from other theoretical approaches.

39 pages, 11 figures. References and discussion added. Accepted by Few-Body Systems for publication. arXiv admin note: text overlap with arXiv:hep-ph/0608015 by other authors

References in corpus (24)

• Big-Bang Nucleosynthesis
• Test of lepton universality using $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• $B\to V{\ell }^{+}{\ell }^{-}$ in the Standard Model from Light-Cone Sum Rules
• On the B to D* tau nu Sensitivity to New Physics
• Measurement of the Differential Branching Fraction and Forward-Backword Asymmetry for B->K(*)l+l-
• A perturbed lepton-specific two-Higgs-doublet model facing experimental hints for physics beyond the Standard Model
• Form Factors from Light-Cone Sum Rules with B-Meson Distribution Amplitudes
• B -> D tau nu Branching Ratios: Opportunity for Lattice QCD and Hadron Colliders
• The semileptonic decay Lambda_b -> Lambda_c + tau(-) + antinu_tau in the covariant confined quark model
• Generalised helicity formalism, higher moments and the $B\to K_{J_K}(\to K\pi ){\bar{\ell }}_1{\ell }_2$ angular distributions
• Rare baryon decays Lambda_b -> Lambda l+ l- (l=e, mu, tau) and Lambda_b -> Lambda gamma : Differential and total rates, lepton- and hadron-side forward-backward asymmetries
• New physics reach of the decay mode $\bar{B}\to {\bar{K}}^{\ast 0}{\ell }^{+}{\ell }^{-}$
• Analytic calculation of two-loop QCD corrections to b\to s\ell^+\ell^- in the high q^2 region
• Resonances gone topsy turvy - the charm of QCD or new physics in $b\to s{\ell }^{+}{\ell }^{-}$?
• B- to light-meson transition form factors
• Heavy-to-light semileptonic decays of Lambda_b and Lambda_c baryons in the covariant confined quark model
• Charmonia in a Contact Interaction
• Time dependence in $B\to V\ell \ell$ decays
• The FORM project
• On the meson mass spectrum in the covariant confined quark model
• Form factors of the B-S-transitions in the covariant quark model
• Testing New Physics Effects in $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$
• Latest results on rare decays from LHCb
• The $\bar{B}\to \bar{K}\pi \ell \ell$ and ${\bar{B}}_s\to \bar{K}K\ell \ell$ distributions at low hadronic recoil

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• $B\to \rho$ Decay Form Factors from Covariant Confined Quark Model
• $B_s\to K^{\ast 0}$ decay form factors from covariant confined quark model
• Decay $B_c^{+}\to D_{(s)}^{(\ast )+}{\ell }^{+}{\ell }^{-}$ within covariant confined quark model
• Radiative transitions of charmonium states in the covariant confined quark model