Prof. Borut Bajc: R-parity violation in SU(5)
Povzetek:
R-parity violation in SU(5)
Public lecture before the promotion to full professor (Javno predavanje pred izvolitvijo v naziv redni profesor)
Prof. Borut Bajc, Odsek za teoretično fiziko, Inštitut Jožef Stefan, Ljubljana
In supersymmetric SU(5) an extra Z2 discrete symmetry called R-parity is often assumed to forbid a too fast proton decay rate. The minimal renormalizable model has then two problems: a massless neutrino and a quantitative wrong charged lepton versus down quark mass ratios. In the seminar I will show that a controlled violation of R-parity can solve both problems being still in accord with the experimental bound on nucleon lifetime. Such a model has also interesting and unusual low energy phenomenology.
