Decay $${B \to K^\ast(\to K\pi)\ell^{+} \ell^{-}}$$ B → K * ( → K π ) ℓ + ℓ - in Covariant Quark Model

Theoretical description of the decays Λb→Λ(*)(Gutsche1, Ivanov2, Körner3 et al. 2017Phys. Rev. D370432View full textAdd to dashboardCite

“…The model parameters are the constituent quark masses m q and the infrared cutoff parameter λ responsible for quark confinement. They are taken from a new fit done and used in our papers on the semileptonic B → D ( * ) ν decays [22][23][24][25], rare B → M¯ decays [26][27][28], the semileptonic decays [29,30] and for the calculation of nucleon tensor form factors [31]. The best fit values for the constituent quark masses and the infrared cutoff parameter λ are…”

Rare $b \to d$ decays in covariant confined quark model

“…This distribution allows us to compute the different observables such as decay widths, forward backward asymmetry and polarization of daughter mesons. The detailed computation technique for computation of these observables are available for the rare decays of B (c) mesons in [86,93]. We employ the same formalism for present study.…”

B → ρ decay form factors from covariant confined quark model

“…Below, we list the definitions of the dimensionless invariant transition form factors together with the covariant quark model expressions that allow one to calculate them. We closely follow the notation used in previous papers [10,12].…”