The Lightest Higgs Boson and Relic Neutralino in the MSSM with CP Violation

TL;DR

This paper explores a minimal supersymmetric model with CP violation, showing that a very light Higgs boson and neutralino can exist within experimental limits, offering potential dark matter candidates.

Contribution

It demonstrates the viability of a light Higgs boson and neutralino in the MSSM with CP violation, relaxing traditional GUT relations among gaugino masses.

Findings

Light Higgs boson mass range: 7-10 GeV.

Lightest neutralino mass as low as 2.9 GeV.

Viable dark matter candidate within experimental constraints.

Abstract

In a minimal supersymmetric extension of the standard model (MSSM) with explicit CP violation a mass of the lightest Higgs boson H_1 in the range 7 GeV} < M_{H_1} < 10 GeV is experimentally allowed by present accelerator limits. In the same scenario a lightest neutralino as light as 2.9 GeV can be a viable dark matter candidate, provided that a departure from the usual GUT relation among gaugino masses is assumed.