Speaker
Rui Luo
(University of Glasgow)
Description
We investigate leptogenesis in the E6 inspired Supersymmetric Standard Model. In this model, the gauge singlet right-handed neutrinos decay into ordinary leptons, exotic leptons and leptoquarks, all of which carry non-zero lepton number. Lepton asymmetries are calculated from loop diagram contributions to the right-handed neutrino decay. We find that lepton asymmetries can be enhanced drastically by extra Yukawa couplings in this model. Boltzmann Equations indicate that a successful leptogenesis can be achieved when the lightest right-handed neutrinos mass is of order 10^6 GeV, as required by the limit on the reheating temperature.
Author
Rui Luo
(University of Glasgow)
