Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-06-26
Phys.Lett. B391 (1997) 461-464
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages latex file, including 3 figures, minor changes in text, result no change
Scientific paper
10.1016/S0370-2693(96)01491-8
We investigate the radiative dileptonic decays $B_s(B_d)\to\gamma l^+l^-$ within the standard model. Using the constituent quark model, the branching ratios turn out to be around $5\times 10^{-9}$ for $B_s\to \gamma \mu^+\mu^- $ and around $6\times 10^{-10}$ for $B_d \to \gamma \mu^+\mu^- $, with slightly larger values for $B_s(B_d) \to \gamma e^+e^- $. The differential rate as a function of the dilepton invariant mass is given. The possibility of using these processes to determine the decay constants of $B_s$ or $B_d$ is discussed.
Eilam Gad
Lu Cai-Dian
Zhang Da-Xin
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