Complete Analyses on the Short-Distance Contribution of Bs →?+ ?? γ in the Standard Model
WANG Wen-Yu** , XIONG Zhao-Hua, ZHOU Si-Hong
Institute of Theoretical Physics, College of Applied Science, Beijing University of Technology, Beijing 100124
Abstract ：Using the Bs meson wave function extracted from non-leptonic Bs decays, we evaluate the rare decays Bs →?+ ?? γ (? =e,μ ) in the standard model, including contributions from all four kinds of diagrams. We focus on the contribution from the four-quark operators, which were not taken into account properly in previous studies. We find that the contribution is large, leading to the branching of Bs →?+ ?? γ being nearly enhanced by a factor 3 and up to 1.6×10?8 . The predictions for such processes can be tested in the LHC-b and B factories in the near future.
收稿日期: 2013-07-02
出版日期: 2013-11-30
:
12.15.Ji
(Applications of electroweak models to specific processes)
13.20.He
(Decays of bottom mesons)
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2013, Vol. 30 
