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

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

2012-03-30

arxiv.org/abs/1203.6896v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures

Scientific paper

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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