Neutrino Yukawa couplings and FCNC processes in B decays in SUSY-GUT

Abstract

Flavor changing neutral current and lepton flavor violating processes are studied in the SU(5) SUSY-GUT with right-handed neutrino supermultiplets. Using input parameters motivated by neutrino oscillation, it is shown that the time-dependent CP asymmetry of $b\to s\gamma$ can be as large as 20%. We also show that the $B_s$-${\bar{B}}_s$ mixing can be significantly different from the standard model prediction.

Talk given in International Seminar Quarks-2000, May 14-21, 2000, Pushkin, Russia and ICHEP 2000, July 27-August 2, 2000, Osaka, Japan