Supersymmetric Dirac Leptogenesis and Neutrino Phenomenology

por Manuel Toharia Zapata (University of Michigan)

lunes 12 dic. 2005 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

In Dirac Leptogenesis, Majorana mass terms are forbidden and the smallness of Dirac neutrino masses is linked to new heavy vector-like leptons. The decays of these heavy leptons will produce a net baryon number, via sphalerons. Even though B-L=0, the sphaleron wash-out is avoided because the Lepton number stored in the right-handed neutrinos will not equilibrate with the `left-handed´ Lepton number until well after sphalerons turn off. We write and numerically solve the Boltzmann equations and attempt to link Leptogenesis to neutrino phenomenology.