Constraints onBand Higgs physics in minimal low energy supersymmetric models

Abstract

We study the implications of minimal flavor violating low energy supersymmetry scenarios for the search of new physics in the B and Higgs sectors at the Tevatron collider and the LHC. We show that the already stringent Tevatron bound on the decay rate B s → µ + µ − sets strong constraints on the possibility of generating large corrections to the mass difference ∆M s of the B s eigenstates. We also show that the B s → µ + µ − bound together with the constraint on the branching ratio of the rare decay b → sγ has strong implications for the search of light, non-standard Higgs bosons at hadron colliders. In doing this, we demonstrate that the former expressions derived for the analysis of the double penguin contributions in the Kaon sector need to be corrected by additional terms for a realistic analysis of these effects. We also study a specific non-minimal flavor violating scenario, where there are flavor changing gluino-squark-quark interactions, governed by the CKM matrix elements, and show that the B and Higgs physics constraints are similar to the ones in the minimal flavor violating case. Finally we show that, in scenarios like electroweak baryogenesis which have light stops and charginos, there may be enhanced effects on the B and K mixing parameters, without any significant effect on the rate of B s → µ + µ − .

Discovering the Higgs bosons of minimal supersymmetry with tau leptons and a bottom quark

“…Our results for bφ 0 → bτ − τ + are consistent with those given in these references and also with the results of Ref. [38] for the Fermilab Tevatron. …”

Measuring V ub and probing SUSY with double ratios of purely leptonic decays of B and D mesons

“…In the SM, the main theoretical uncertainty is from f Bs and V ts , but the latter can be taken as a well-measured parameter by assuming CKM unitarity. It has been emphasized in many works [45,46,[79][80][81] that the decay B s → µ + µ − is very sensitive to the presence of SUSY particles. At high tan β, the MSSM contribution to this process is dominated by the exchange of neutral Higgs bosons.…”

Flavor constraints on two-Higgs-doublet models with general diagonal Yukawa couplings

“…For recent studies discussing flavor constraints on the charged Higgs boson in the MSSM, see [12]. To differentiate between the MSSM Higgs sector and a more general theory with two Higgs doublets, it is interesting to identify differences in phenomenologically viable signals, such as a charged Higgs boson contribution to flavor physics observables.…”