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Can contributions to B s → l + l − γ from the magnetic-penguin operator with real photons in the standard model be neglected?

Authors :
Si-Hong Zhou
Zhao-Hua Xiong
Wenyu Wang
Source :
Chinese Physics C. 38:063103
Publication Year :
2014
Publisher :
IOP Publishing, 2014.

Abstract

Using the $B_s$ meson wave function extracted from non-leptonic $B_s$ decays, we reevaluate the rare decays $B_s\to \ell^+\ell^- \gamma, (\ell=e,\mu)$ in the standard model, including two kinds of contributions from magnetic-penguin operator with virtual and real photon. We find that the contributions from magnetic-penguin operator $b\to s\gamma$ with real photon to the exclusive decays, which is regarded as to be negligible in previous literatures, are large, and the branchings of $B_s\to \ell^+\ell^-\gamma$ are nearly enhanced by a factor 2. With the predicted branching ratios at order of $10^{-8}$, it is expected that the radiative dileptonic decays will be detected in the LHC-b and B factories in near future.

Details

ISSN :
16741137
Volume :
38
Database :
OpenAIRE
Journal :
Chinese Physics C
Accession number :
edsair.doi...........e0cae75d4ad4b06cbac19eb9bbf5797c