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arXiv · hep-ph/9712325

Radiative Leptonic Decays of $B_c $ Meson

Chao-Hsi Chang·Jian-Ping Cheng·Cai-Dian Lu
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Abstract

To the leading order, the radiative leptonic decays $B_c \to γ\ell \bar ν$ ($ \ell=e, μ$) are studied carefully. In the study, a non-relativistic constituent quark model and the effective Lagrangian for the heavy flavour decays are used. As a result, the branching ratios turn out to be of the orders of $10^{-5}$ for $B_c \to γμ\bar ν$ or for $B_c \to γe \bar ν$. Based on this study, we point out the decays being accessible experimentally at the future LHC, and the possibility to determine the decay constant $f_{B_c}$ through the radiative decays.

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Chao-Hsi Chang, Jian-Ping Cheng, Cai-Dian Lu. 1998-01-21. Radiative Leptonic Decays of $B_c $ Meson. https://doi.org/10.1016/s0370-2693(98)00177-4

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