Probing the Majorana mass scale of right-handed neutrinos in mSUGRA

摘要

We discuss the perspectives of testing the right-handed Majorana mass scaleM_R of the SUSY see-saw model in the mSUGRA framework. Lepton-flavor violatinglow energy processes are analyzed in recently proposed post-LEP benchmarkscenarios, taking into account present uncertainties and future developments inthe neutrino sector. Nonobservation of mu -> e gamma in the next-generation PSIexperiment will provide upper bounds on M_R of the order of 10^(12-14) GeV,while on the other hand, a positive signal for tau -> mu gamma at SUPERKEKB orthe LHC may determine M_R for a given mSUGRA scenario with an accuracy of afactor of 2.