Non-anomalous Discrete R-symmetry, Extra Matters, and Enhancement of the Lightest SUSY Higgs Mass

TL;DR

This paper explores a supersymmetric model with a non-anomalous discrete R-symmetry, introducing new particles that can significantly increase the lightest Higgs boson mass beyond MSSM limits, reaching over 140 GeV.

Contribution

It demonstrates that adding new particles to ensure a non-anomalous R-symmetry can substantially raise the Higgs mass in supersymmetric models.

Findings

Lightest Higgs mass can exceed MSSM upper bounds.

Possible Higgs mass as large as 140 GeV or more.

New particles couple to the Higgs, enhancing its mass.

Abstract

We consider low-energy supersymmetric model with non-anomalous discrete R-symmetry. In such a model, to make the R-symmetry non-anomalous, new particles with gauge quantum numbers should be inevitably added to the particle content of the minimal supersymmetric standard model (MSSM). Those new particles may couple to the Higgs boson, resulting in a significant enhancement of the lightest Higgs mass. We show that, in such a model, the lightest Higgs mass can be much larger than the MSSM upper bound; the lightest Higgs mass as large as 140 GeV (or larger) becomes possible.