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arXiv · 1203.6896

Hints for a Low Bs --> mu+ mu- Rate and the Fourth Generation

Wei-Shu Hou·Masaya Kohda·Fanrong Xu
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Abstract

With full 2011 LHC data analyzed, there is no indication for deviation from Standard Model (SM) in CP violating phase for Bs --> J/psi phi, nor in the forward-backward asymmetry for B0 --> K*0 mu+ mu-. SM sensitivity, however, has been reached for Bs --> mu+ mu- rate, and there may be some hint for a suppression. We illustrate that, if a suppressed B(Bs --> mu+ mu-) bears out with 2012 data, it would imply a lower bound on the fourth generation quark mixing product |V_{t's}^*V_{t'b}|.

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Wei-Shu Hou, Masaya Kohda, Fanrong Xu. 2012-03-30. Hints for a Low Bs --> mu+ mu- Rate and the Fourth Generation. https://doi.org/10.1103/physrevd.85.097502

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