Speaker
Mr
Tomas Hällgren
(Royal Institute of Technology (KTH), Department of theoretical physics)
Description
It has previously been shown that in left-right symmetric type I+II
seesaw mechanism, an eight-fold degeneracy among the mass matrices of
the heavy right handedneutrinos M_R exist. We discriminate among the
degenerate solutions, using stability properties of the solutions and
their ability to lead to successful baryogenesis via leptogenesis as
criteria. Thus, we can partially lift the eight-fold degeracy. We find
in particular that viable leptogenesis is generically possible for
four out of the eight solutions.
Author
Mr
Tomas Hällgren
(Royal Institute of Technology (KTH), Department of theoretical physics)
