The Radiative Leptonic $B_c\to \tau \overline{{\nu }_{\tau }}\gamma$ Decay in Two Higgs Doublet Model

Abstract

The radiative leptonic $B_c\to \tau \overline{{\nu }_{\tau }}\gamma$ 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.