GUT, Neutrinos, and Baryogenesis

Abstract

It is an exciting time for flavor physics. In this talk, I discuss recent topics in baryogenesis and leptogenesis in light of new data, and implications in B and neutrino physics. I also discuss current situation of grand unified theories concerning coupling unification, proton decay, and indirect consequences in lepton flavor violation and B physics. I explain attempts to understand the origin of flavor based on flavor symmetry, in particular "anarchy" in neutrinos.

Comments: Talk presented at 5th KEK Topical Conference: Frontiers In Flavor Physics, 20-22 Nov 2001, Tsukuba, Ibaraki, Japan. Includes comments on SUSY GUT contribution to B->phi Ks