Flat Directions and Leptogenesis in a “New” uv SSM

Abstract

In this paper, we give a brief review of the Minimal Supersymmetric Standard Model (MSSM) and " µ from ν " Supersymmetric Standard Model ( µν SSM). Then we propose a generalization of µν SSM in order to explain the recent ATLAS, CMS and LHCb results. This "new" µν SSM generalizes the superpotential suppot W of µν SSM by including two terms that generate a mixing among leptons, gauginos and higgsinos while keeping the charginos and neutralinos masses unchanged. Also, it is potentially interesting for cosmological applications as it displays flat directions of the superpotential and a viable leptogenesis mechanism. Subject AreasModern Physics KeywordsSupersymmetric Models

Neutrino Masses in Supersymmetric Models with R-Symmetry

“…The the Next-to-the-Minimal Supersymmetric Standard-Model (NMSSM) can be obtained either from super-GUT models or from super-string E(6) models [12,42]. To get NMSSM, one needs to set…”

“…Therefore, several processes as the double beta decay, can take place without neutrinos. More details can be found in [12].…”

“…In this paper, we review the relation between the neutrinos and the R-symmetry in several non-minumal SUSY models: MSSM with R-Parity violation, NMSSM, MSSM3RHN, µνSM, SUSYB-L, SUSYLR and two SUSYGUTS models. (For a detailed discussion of one of these models see [12]). With the recent experimental bounds in the minimal SUSY models from the LHC, there has been a revival of interest in non-minimal models with R-symmetry [13,14].…”