Constraining the MSSM with universal gaugino masses and implication for searches at the LHC

TL;DR

This paper explores the parameter space of a constrained MSSM model with universal gaugino masses, analyzing its compatibility with dark matter relic density, collider constraints, and prospects for LHC searches.

Contribution

It provides a comprehensive analysis of the allowed MSSM parameter space under gaugino universality using MCMC, linking dark matter, collider, and B-physics constraints.

Findings

Identifies viable parameter regions consistent with dark matter relic density.

Highlights the complementarity of LHC, B-physics, and dark matter searches.

Describes expected decay chains of coloured particles at LHC.

Abstract

Using a Markov chain Monte Carlo approach, we find the allowed parameter space of a MSSM model with seven free parameters. In this model universality conditions at the GUT scale are imposed on the gaugino sector. We require in particular that the relic density of dark matter saturates the value extracted from cosmological measurements assuming a standard cosmological scenario. We characterize the parameter space of the model that satisfies experimental constraints and illustrate the complementarity of the LHC searches, B-physics observables and direct dark matter searches for further probing the parameter space of the model. We also explore the different decay chains expected for the coloured particles that would be produced at LHC.