Revisiting Signature of Minimal Gauge Mediation

Details Revisiting Signature of Minimal Gauge Mediation Revisiting Signature of Minimal Gauge Mediation

2007-06-21

arxiv.org/abs/0706.3145v2

Phys.Lett.B655:269-279,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 16 figures

Scientific paper

10.1016/j.physletb.2007.08.087

We revisit phenomenology of the minimal gauge-mediated model. This model is motivated from the SUSY CP and flavor problems. A specific feature of this model is that \tan\beta is naturally large, since the B term in the Higgs potential is zero at the messenger scale. This leads to significant SUSY contributions to various low-energy observables. We evaluate the anomalous magnetic moment of the muon and the branching ratio of \bar{B}\to X_s\gamma taking account of recent theoretical and experimental developments. We find that the current experimental data prefer a low messenger scale (\sim 100 TeV) and gluino mass around 1 TeV. We also calculate the branching ratios of \bar{B}\to X_s l^+l^-, B_s\to \mu^+\mu^-, and B^-\to \tau^- \bar{\nu}, and show that these observables are strongly correlated with each other in this model.

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