Weak decays of B-s mesons to D-s mesons in the relativistic quark model

作者：Faustov R N^*; Galkin V O

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2013, 87(3): 034033.

DOI：10.1103/PhysRevD.87.034033

The form factors of weak decays of B-s mesons to ground state D-s((*)) mesons as well as to their radial D-s((*)) (2S) and orbital D-sJ((*)) excitations are calculated in the framework of the relativistic quark model based on the quasipotential approach. All relativistic effects, including contributions of intermediate negative-energy states and boosts of the meson wave functions, are consistently taken into account. As a result, the form factors are determined in the whole kinematical range without additional phenomenological parametrizations and extrapolations. On this basis, semileptonic decay branching fractions are calculated. Two-body nonleptonic B-s decays are considered within the factorization approximation. The obtained results agree well with available experimental data. DOI: 10.1103/PhysRevD.87.034033

• 出版日期2013-2-20