Can contributions to Bs&rarr;l+l-&gamma; from the magnetic-penguin operator with real photons in the standard model be neglected?

WANG Wen-Yu; XIONG Zhao-Hua; ZHOU Si-Hong

doi:10.1088/1674-1137/38/6/063103

Chinese Physics C> 2014, Vol. 38> Issue(6) : 063103 DOI: 10.1088/1674-1137/38/6/063103

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

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Institute of Theoretical Physics, Beijing University of Technology, Beijing 100124, China

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Using the B_s meson wave function extracted from non-leptonic B_s decays, we reevaluate the rare decays B_s→l⁺l^- γ,(l=e,μ) in the Standard Model, including two kinds of contributions from the magnetic-penguin operator with virtual and real photons. We find that contributions to the exclusive decays from the magnetic-penguin operator b→sγ with real photons, which were regarded as negligible in the previous literature, are large and the branching ratios B_s→l⁺l^-γ are enhanced by a factor of almost 2. With the predicted branching ratios of the order of 10^-8, it is expected that these radiative dileptonic decays will be detected in LHC-b and B factories in the near future.

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WANG Wen-Yu, XIONG Zhao-Hua and ZHOU Si-Hong. Can contributions to B_s→l⁺l^-γ from the magnetic-penguin operator with real photons in the standard model be neglected?[J]. Chinese Physics C, 2014, 38(6): 063103. doi: 10.1088/1674-1137/38/6/063103

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Received: 2013-07-17
Revised: 2013-12-07

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沈阳化工大学材料科学与工程学院沈阳 110142

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

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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?

Corresponding author: WANG Wen-Yu,

Corresponding author: XIONG Zhao-Hua,

Corresponding author: ZHOU Si-Hong,

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