Ponente
Descripción
The MnuSSM is a simple supersymmetric extension of the Standard Model (SM) capable of predicting neutrino physics in agreement with experiment. In this paper we perform the complete one-loop renormalization of the neutral scalar sector of the MnuSSM with one and three generations of right-handed neutrinos in a mixed on-shell/DR scheme. The renormalization procedure is discussed in detail, emphasizing conceptual differences to the minimal (MSSM) and next-to-minimal (NMSSM) supersymmetric standard model regarding the field renormalization and the treatment of non-flavor-diagonal soft mass parameters, which have their origin in the breaking of R-parity. We calculate the full one-loop corrections to the neutral scalar masses of the MnuSSM. The one-loop contributions are supplemented by available MSSM higher-order corrections. We obtain numerical results for a SM-like Higgs boson mass consistent with experimental bounds. Corrections genuine for the MnuSSM are discussed in example scenarios. Finally we show that the MnuSSM can accomodate a Higgs boson that could explain an excess of diphoton events at ∼96GeV, as reported by CMS, as well as the 2σ excess of bb events observed at LEP at a similar mass scale.
