The Radiative Leptonic $B_{c}\to \tau\bar{\nu_{\tau}}\gamma$ Decay in Two Higgs Doublet Model

Abstract

The radiative leptonic $B_{c}\to\tau\bar{\nu_{\tau}}\gamma$ decay is analysed in context of 2HDM. It is shown that with large values of $tan\beta$, the contributions of Model II to the decay rate exceeds considerably the Standard Model ones, while the contributions of Model I overlap with the Standard Model predictions.