Weak decays of Bs mesons to Ds mesons in the relativistic quark modelстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 30 апреля 2017 г.
Аннотация:The form factors of weak decays of Bs mesons to ground state Ds(*) mesons as well as to their radial Ds(*)(2S) and orbital DsJ(*) 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 Bs decays are considered within the factorization approximation. The obtained results agree well with available experimental data.