We consider low scale gauge mediation models with a very light gravitino m3/2 <∼16 eV, in the light of recent experimental hints on the Higgs boson mass. The light gravitino is very interesting since there is no gravitino over-production problem, but it seems difficult to explain the Higgs boson mass of ∼ 125GeV. This is because of the conflict between the light gravitino mass and heavy SUSY particle masses needed for producing the relatively heavy Higgs boson mass. We consider two possible extensions in this paper: a singlet extension of the Higgs sector, and strongly coupled gauge mediation. We show that there is a large parameter space, in both scenarios, where the Higgs boson mass of ∼125GeV is explained without any conflict with such a very light gravitino.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics