Supersymmetry breaking as the origin of flavor

por Javier Ferrandis (Lawrence Berkeley National Lab.)

miércoles 12 ene. 2005 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

We present an effective flavor model for the radiative generation of fermion masses and mixings based on a SU(5)XU(2) symmetry. We argue that the original source of flavor breaking resides in the supersymmetry breaking sector. Flavor violation would be transmitted radiatively to the fermion Yukawa couplings at low energy through finite supersymmetric threshold corrections. If this is the case one could fit the fermion mass ratios and CKM matrix elements, suppress the dimension five operators which contribute to proton decay, solve the SUSY CP-problem and overcome the present constraints on supersymmetric contributions to flavor changing processes through an approximate radiative alignment between the Yukawa and the soft supersymmetry breaking sector. We will argue that this possibility is supported by recently discovered patterns between dimensionless fermion mass ratios and CKM elements.