Abstract
Leptogenesis provides the most attractive explanation of the
matter-antimatter asymmetry of the Universe. It relies on the
minimal see-saw mechanism where new very heavy RH neutrinos are added to
the SM.
The main problem faced by leptogenesis is testability. In my talk I will
discuss how imposing the final asymmetry is made independent of the
initial conditions
("strong thermal leptogenesis" condition). This favours a lightest
neutrino mass greater than about 10 meV, a constraint that will be tested
in future years with cosmological observations. I will also discuss a
more constrained, SO(10) inspired scenario, where the condition for
successful strong thermal leptogenesis leads to quite definite predictions
for all the low energy neutrino parameters.