Radiative Leptonic $B_c$ Decays

TL;DR

This paper predicts the branching ratio of the radiative leptonic decay of the $B_c$ meson using a QCD-inspired model, highlighting its experimental detectability at future hadron colliders.

Contribution

It provides a novel theoretical prediction for the $B_c o ext{lepton} u ext{gamma}$ decay rate using a QCD-inspired constituent quark model.

Findings

Predicted branching ratio: approximately 3 x 10^{-5}

Decay channel is experimentally promising due to high $B_c$ production

Analysis supports future experimental searches for this decay mode

Abstract

We analyze the radiative leptonic $B_c$ decay mode: $B_c \to \ell \nu \gamma$ ($\ell=e, \mu$) using a QCD-inspired constituent quark model. The prediction: ${\cal B}(B_c \to \ell \nu \gamma)\simeq 3 \times 10^{-5}$ makes this channel experimentally promising in view of the large number of $B_c$ mesons which are expected to be produced at the future hadron facilities.