Linking fermion masses, neutrino oscillations and CP violation through supersymmetric unification

by Jogesh PATI (University of Maryland)

Friday 7 Jul 2000, 14:00 → 14:15 Europe/Zurich

CERN

It is noted that but for one missing piece - proton decay - the evidence in support of grand unification is now strong. It includes (i) the observed family-structure, (ii) the meeting of the gauge couplings, (iii) neutrino oscillations, (iv) the intricate pattern of masses and mixings of all fermions, including the neutrinos, and (possibly) (v) the need for B-L as a generator to implement baryogenesis. Taken together, these not only favour grand unification, but in fact select out a particular route to such unification, based on a string unified G(224) or SO(10)- symmetry. A concrete proposal is presented within a supersymmetric SO(10)/G(224)- framework, that successfully describes the masses and mixings of all fermions including neutrinos- with eight predictions, all in agreement with observation. The framework leads to some crucial and testable predictions for proton decay. It also provides an intriguing link between fermion masses and neutrino oscillations on the one hand, and the values of epsilon-prime/epsilon and of B-B-bar asymmetry on the other hand.