A gauge-mediated supersymmetry breaking model with an extra singlet Higgs field

TL;DR

This paper explores a next-to-minimal supersymmetric model with gauge mediation, demonstrating its ability to produce realistic Higgs parameters, a viable particle spectrum, and dark matter candidates, while addressing cosmological issues.

Contribution

It introduces a gauge-mediated supersymmetry breaking model with an extra singlet Higgs field that successfully generates consistent Higgs parameters and dark matter candidates.

Findings

Feasible spontaneous generation of Higgs mass parameters $mbda$ and $B_mbda$

Messenger sneutrinos as viable cold dark matter candidates

Potential to evade the cosmological domain wall problem

Abstract

We study in some detail the next-to-minimal supersymmetric standard model with gauge mediation of supersymmetry breaking. We find that it is feasible to spontaneously generate values of the Higgs mass parameters $\mu$ and $B_\mu$ consistent with radiative electroweak symmetry breaking. The model has a phenomenologically viable particle spectrum. Messenger sneutrinos with mass in the range 6 to 25 TeV can serve as cold dark matter. It is also possible to evade the cosmological domain wall problem in this scenario.