MSSM electroweak baryogenesis and LHC data

por Mariano Quirós (ICREA (IFAE, Universitat Autònoma de Barcelona))

martes 5 jun. 2012 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

Electroweak baryogenesis in the MSSM may only be realized in the presence of light stops. Currents bounds on the Higgs mass demand the heaviest stop to be heavier than several TeV. Moreover the lightest stop leads to an increase of the gluon-gluon fusion Higgs production cross section which seems to be in conflict with current LHC data. We show that this tension may be considerably relaxed in the presence of a lightest neutralino with a mass of the order of 10-20 GeV satisfying all present experimental constraints.