Cosmology of Neutrino Minimal Standard model

by Oleg Ruchayskiy (EPFL)

Friday 6 Nov 2009, 11:30 → 12:30 Europe/Zurich

Univ. de Geneve, Auditoire 234, 24 quai E. Ansermet, CH-1211 Genève 4

I will review an extension of the Standard Model by three right-handed (sterile) neutrinos with masses below the electroweak scale (the Neutrino Minimal Standard Model, nuMSM). I will overview the history of the Universe from the inflationary era until today and demonstrate that most of the observed beyond-the-Standard-Model phenomena find their explanation within the framework of this model. In particular, the model provides mechanisms of inflation and generation of baryon asymmetry of the Universe. It contains a dark matter candidate that can be warm or cold and satisfies all existing constraints. On particle physics side the nuMSM explains the data on neutrino flavor oscillations. The masses of all new particles in the nuMSM are below the electroweak scale, which makes the model testable with existing experimental means.