Definite New Physics answers to recent questions from CP asymmetries.

por Oscar Vives (U. valencia)

jueves 8 mar. 2001 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

Recent results from B->J/psi K_s CP asymmetries are still somewhat lower than the SM expectations. In this talk, we present the predictions for this asymmetry in two minimal extensions of the SM. In the first part, a generic MSSM with arbitrary soft breaking terms at the GUT scale is analyzed and we find that moderate deviations from the SM predictions are naturally accommodated. Finally an extension of the SM with the addition of a vector like down quark is presented as a typical model where large deviations from the SM expectations are possible.