Speaker
Volodymyr Takhistov
(University of California at Irvine)
Description
With LHC not observing superpartners,
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. Such R-parity violating scenarios may lead to interesting phenomenology
and explain why superpartners have not been observed yet.
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, we will briefly comment on how
baryogenesis and certain baryon number violating processes may arise
within such simple models.
Authors
Prof.
Michael Ratz
(Technische Universitaet Muenchen)
Prof.
Mu-Chun Chen
(University of California at Irvine)
Volodymyr Takhistov
(University of California at Irvine)
