Dark Matter Abundance and Electroweak Baryogenesis in the CMSSM

TL;DR

This paper explores the parameter space of the Constrained MSSM to identify regions that can account for dark matter abundance and baryon asymmetry, consistent with experimental constraints.

Contribution

It identifies specific parameter regions in the CMSSM that satisfy dark matter relic density and baryogenesis conditions while complying with accelerator and precision tests.

Findings

Allowed parameter space for dark matter relic density

Regions where baryon asymmetry can be generated

Compatibility with accelerator and precision measurements

Abstract

The Minimal Supersymmetric Standard Model has a candidate dark matter particle in its spectrum and may be able to generate the baryon asymmetry of the Universe (BAU) at the electroweak phase transition. In the Constrained MSSM, we find the area of parameter space which is allowed by accelerator and precision tests, which produces a relic dark matter abundance in the observationally favored window 0.1<Omega h^2<0.3, and where baryon plus lepton number violating processes are out of equilibrium after the electroweak phase transition.