Exclusive weak B decays involving τ lepton in the relativistic quark modelстатья
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Дата последнего поиска статьи во внешних источниках: 30 апреля 2017 г.
Аннотация:Semileptonic and leptonic B decays are analyzed in the framework of the relativistic quark model. Special attention is paid to the decays involving τ lepton. It is found that the calculated particular decay branching fractions are consistent with available experimental data within error bars. However, the predicted and recently measured ratios R(D ( (*))) of the B→D ( (*))τν τ and B→D ( (*))lν l branching fractions differ by 1.75σ for R(D) and by 2.4σ for R(D*).