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Correlation of B_s -> mu^+ mu^- and (g-2)_mu in Minimal Supergravity
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We analyse the rare decay mode B_s -> mu^+ mu^- in the minimal supergravity scenario (mSUGRA). We find a strong correlation with the muon anomalous magnetic moment (g-2)_mu. An interpretation of the recently measured excess in (g-2)_mu in terms of mSUGRA corrections implies a substantial supersymmetric enhancement of the branching ratio Br(B_s -> mu^+ mu^-): if (g-2)_mu exceeds the Standard Model prediction by 4*10^{-9}, Br(B_s -> mu^+ mu^-) is larger by a factor of 10-100 than in the Standard Model and within reach of Run-II of the Tevatron. Thus an experimental search for B_s -> mu^+ mu^- is a stringent test of the mSUGRA GUT scale boundary conditions. If the decay B_s -> mu^+ mu^- is observed at Run-II of the Tevatron, then we predict the mass of the lightest supersymmetric Higgs boson to be less than 120 GeV. The decay B_s -> mu^+ mu^- can also significantly probe the favoured parameter range in SO(10) SUSY GUT models.
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Cited by 1 Pith paper
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Revisiting the Electroweak Supersymmetry from the Generalized Minimal Supergravity
A GmSUGRA parameter scan maps viable neutralino dark matter scenarios for both signs of mu and claims a first sbottom coannihilation region for mu<0, though internal contradictions weaken that claim.
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