Supersymmetric contributions to Bs→Kπ+ decay

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XU Yuan-Guo, WANG Ru-Min and YANG Ya-Dong. Supersymmetric contributions to Bs→Kπ+ decay[J]. Chinese Physics C, 2010, 34(11): 1687-1692. doi: 10.1088/1674-1137/34/11/003
XU Yuan-Guo, WANG Ru-Min and YANG Ya-Dong. Supersymmetric contributions to Bs→Kπ+ decay[J]. Chinese Physics C, 2010, 34(11): 1687-1692.  doi: 10.1088/1674-1137/34/11/003 shu
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Received: 2009-12-31
Revised: 2010-01-21
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Supersymmetric contributions to Bs→Kπ+ decay

    Corresponding author: YANG Ya-Dong,

Abstract: 

Recently, the CDF Collaboration has measured the branching fraction and time-integrated direct CP asymmetry of B_s→Kπ+ decay. The branching ratio is lower than the previous predictions based on QCD factorization. The experimental results favor a large CP asymmetry in Bs→Kπ+ decay while the standard model prediction is very small. We compute the supersymmetry contributions to Bs→Kπ+ decay using the mass insertion method, and find that the LR and RL mass insertions could suppress this branching ratio and increase this direct CP asymmetry well in line with the experimental data.

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