Speaker
Prof.
Serguey Petcov
(SISSA)
Description
The CP-violation necessary for the generation of the baryon asymmetry of the Universe $Y_B$
in ``flavoured'' leptogenesis scenario can arise from the ``low energy'' PMNS
neutrino mixing matrix $U$ and/or from the ``high energy'' part of neutrino Yukawa couplings,
which can mediate CP-violating phenomena only at some high energy scale.
In the proposed talk
i) the possibility that the requisite CP-violation in leptogenesis
is provided exclusively by the Majorana or Dirac phases in the
neutrino mixing matrix and
ii) the interplay between the indicated two types of
CP-violation in ``flavoured'' leptogenesis, will be discussed.
Results obtained within the type I see-saw model
with three heavy right-handed Majorana neutrinos
having hierarchical mass spectrum will be reported.
Authors
Prof.
Antonio Riotto
(CERN)
Mr
Emiliano Molinaro
(SISSA (Ph.S. student), Trieste, Italy)
Prof.
Serguey Petcov
(SISSA)
Prof.
Silvia Pascoli
(Dept. of Physics, Univ. of Durham, England)
Tetsuo Shindou
(DESY)
Dr
Yasutaka Takanishi
(SISSA, Trieste, Italy)
