B_s --> mu+ mu- decay in the R-parity violating minimal supergravity

TL;DR

This paper investigates the B_s --> mu+ mu- decay within R-parity violating minimal supergravity, revealing potential for the decay to be undetectable at LHC and constraining model parameters based on current experimental bounds.

Contribution

It provides the first analysis of B_s --> mu+ mu- decay in R-parity violating minimal supergravity, highlighting how current bounds restrict the model's parameter space.

Findings

Branching ratio can be below LHCb sensitivity

Current bounds strongly constrain supergravity parameters

Decay could be undetectable at LHC in certain scenarios

Abstract

We study B_s --> mu+ mu- in the context of the R-parity violating minimal supergravity in the high tan beta regime. We find that the lowest value of the branching ratio can go well below the present LHCb sensitivity and hence B_s --> mu+ mu- can even be invisible to the LHC. We also find that the present upper bound on Br(B_s --> mu+ mu-) puts strong constraint on the minimal supergravity parameter space. The constraints become more severe if the upper bound is close to its standard model prediction.