We provide new values for the model parameters of the covariant constituent quark model (with built-in infrared confinement) in the meson sector by a fit to the leptonic decay constants and a number of electromagnetic decays. We then evaluate, in a parameter-free way, the form factors of the B(B s)→P(V) transitions in the full kinematical region of momentum transfer. As an application of our results, we calculate the widths of the nonleptonic B s decays into Ds-Ds+, Ds*-Ds++Ds-Ds*+, and Ds*-Ds*+. These modes give the largest contribution to ΔΓ for the B s-B ̄s system. We also treat the nonleptonic decay B s→J/ψ. Although this mode is color-suppressed, this decay has important implications for the search of possible CP-violating new-physics effects in B s-B ̄s mixing.
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|Publication status||Published - 3 Feb 2012|
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)