Higgs mass and muon anomalous magnetic moment in the U(1) extended MSSM

TL;DR

This paper explores an extended MSSM model with an extra U(1) gauge symmetry, demonstrating it can naturally raise the Higgs mass to 125 GeV and account for the muon g-2 anomaly without requiring high SUSY scales.

Contribution

It shows that adding a U(1) gauge symmetry allows for a higher Higgs mass and muon g-2 explanation within CMSSM and GMSB frameworks, without large A-terms or SUSY scales.

Findings

Higgs mass can reach 125 GeV without large SUSY scale.

Muon g-2 discrepancy can be explained at 1 sigma.

Dark matter abundance can be explained in CMSSM case.

Abstract

We study phenomenological aspects of the MSSM with extra U(1) gauge symmetry. We find that the lightest Higgs boson mass can be increased up to 125 GeV, without introducing a large SUSY scale or large A-terms, in the frameworks of the CMSSM and gauge mediated SUSY breaking (GMSB) models. This scenario can simultaneously explain the discrepancy of the muon anomalous magnetic moment (muon g-2) at the 1 sigma level, in both of the frameworks, U(1)-extended CMSSM/GMSB models. In the CMSSM case, the dark matter abundance can also be explained.