Updated Constraints from B Physics on the MSSM and the NMSSM

TL;DR

This paper updates constraints from B physics on the MSSM and NMSSM models, incorporating recent data and corrections, and explores implications for Higgs and rare decay processes.

Contribution

It provides new bounds on MSSM and NMSSM parameters using B physics observables, including a public Fortran code for calculations.

Findings

Constraints on tan(beta) and M_{H^+} from b -> s gamma.

Limits on a light CP odd Higgs scalar in NMSSM.

B_s -> mu^+ mu^- primarily constrains the light Higgs scenario.

Abstract

We update constraints from B physics observables on the parameters of the MSSM and the NMSSM, combining them with LEP constraints. Presently available SM and Susy radiative corrections are included in the calculations, which will be made public in the form of a Fortran code. Results for the tan(beta) and M_{H^+} dependence of b -> s gamma are presented, as well as constraints on the NMSSM specific case of a light CP odd Higgs scalar. We find that the latter are essentially due to B_s -> mu^+ mu^-, but they do not exclude this possibility.