Light Higgs boson scenario in the supersymmetric seesaw model

Abstract

It is demonstrated that the light Higgs boson scenario, in which the lightest Higgs mass is less than the LEP bound, ${m}_{h}>114.4\text{ }\text{ }\mathrm{GeV}$, is consistent with the supersymmetric seesaw model. With the assumptions of the universal right-handed neutrino mass and the hierarchical mass spectrum of the ordinary neutrinos, the bounds for the right-handed neutrino mass are investigated in terms of lepton flavor violating charged lepton decays. We also discuss the effect of the modification of renormalization group equations by the right-handed neutrinos on the $b\ensuremath{\rightarrow}s\ensuremath{\gamma}$ process and the relic abundance of dark matter in the light Higgs boson scenario.