| Speaker: | Volodymyr Takhistov (UC Irvine) |
|---|---|
| Title: | R Parity Violation From Discrete R Symmetries and Recent Nucleon Decay Searches in the Super-Kamiokande Experiment |
| Date (JST): | Wed, Jul 15, 2015, 13:30 - 14:30 |
| Place: | Seminar Room A |
| Abstract: | With LHC not observing super partners, minimal supersymmetric versions of the Standard Model (SM) are very constrained. We consider supersymmetric extensions of the SM in which the usual R or matter parity gets replaced by another R or non–R discrete symmetry that explains the observed longevity of the nucleon and solves the µ problem of MSSM. In order to identify suitable symmetries, we develop a novel method of deriving the maximal Abelian Z(R)N symmetry that satisfies a given set of constraints (such as those from anomaly freedom and phenomenology). We identify R parity violating (RPV) and conserving models that are consistent with precision gauge unification and also comment on their compatibility with a unified gauge symmetry such as the Pati–Salam group. We shall also provide a counter example to the statement found in the recent literature that the lepton number violating RPV scenarios must have µ term and the bilinear κ L Hu operator of comparable magnitude. Finally, since one of the most constraining issues for model building is overly-rapid proton decay, several recent nucleon decay searches within Super-Kamiokande will be discussed. |
