B mixing, supersymmetry and GUTs

por Ulrich Nierste (Karlsruher Institut für Technologie (KIT))

jueves 24 feb. 2011 12:00 → 13:00 Europe/Madrid

Sala Reuniones Sotano (Edf. Institutos de Investigación)

The 2010 data on quark flavour physics reveal a considerable tension with the Standard Model. However, an excellent fit is found if one permits new physics in the amplitudes describing meson-antimeson mixing in the B_d and B_s systems. The corresponding global analysis disfavours the Standard Model at the level of 3.6 standard deviations and calls for new sources of CP violation in the B-Bbar mixing amplitudes. The Minimal Supersymmetric Standard Model (MSSM) with the popular MFV hypothesis cannot explain this discrepancy. I discuss a viable explanation within an SO(10) GUT model with novel b->s transitions driven by the atmospheric neutrino mixing angle.

Diapositivas transpis846.pdf