Special Universe Talk: Rescuing Gauge Mediation with Neutrinos

by Sudhir Vempati (Indian Institute of Science, Bangalore)

Monday 12 Jun 2017, 14:00 → 15:00 Europe/Berlin

seminar room, basement (Universe Cluster, Boltzmannstr. 2, Garching)

Abstract: The discovery of the Higgs particle at 125 GeV has put strong constraints on minimal and general messenger models of gauge mediation, pushing the stop masses into the multi-TeV regime. We provide a solution using inverse seesaw mechanism. We compute the one loop corrections to the CP-even Higgs mass matrix in the supersymmetric inverse seesaw model to single out the different cases where the radiative corrections from the neutrino sector could become important. For very heavy multi TeV sneutrinos, the corrections replicate the stop corrections at 1-loop. We further show that general gauge mediation with inverse seesaw model naturally accommodates a 125 GeV Higgs with TeV scale stops. The neutrino-sneutrino corrections to the Higgs mass in the inverse seesaw model are not significant in the minimal gauge mediation model, unless one considers messenger-matter interaction terms. We classify all possible models with messenger-matter interactions and perform thorough numerical analysis to find out the promising models. Sudhir is a Cluster guest. Local host: Alejandro Ibarra (TUM)