testable non-degenerate
leptogenesis
Dmitry Zhuridov
(NTHU, Hsinchu)
The 5th International Conference on Flavor Physics
Hanoi, September 24-30, 2009
Coauthors: Chao-Qiang Geng (NTHU) and Chuan-Hung Chen (NCKU & NCTS)
Properties of the universe
Outline
Non-degenerate Low
Energy LG
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•
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Neutrino Masses, LG
and Decaying DM
Model definition
LG realization
Neutrino masses generation
DM generation
Li problems solvation
Possible Colliders signatures
EW prec. tests satisfaction
Conclusion
Non-degenerate Low Energy LG
Positive reply from Phys.Rev.D
Basic ideas come from
•
Ernest Ma (2006): Verifible Radiative Seesaw
Mechanizm of Neutrino masses and DM
(Z2 odd HMNs and new scalardoublet
η
•
)
Pei-Hong Gu and Utpal Sarkar (2008):
Pathways to tastable LG
η masses is needed to satisfy
(Degeneracy of N and
the out-of-equilibrium condition)
Model definition
Leptogenesis realization
Neutrino Masses generation
Modified Davidson-Ibarra bound
Dark Matter generation
Li problems solvation
Possible Colliders Signatures
Electroweak Precision Tests
satisfaction
Model
Results
Conclusion
We have investigated a simple extension of the SM to
explain the neutrino masses, the observed BAU, DM and
lithium abundances in the universe. The proposed model
satisfies the electroweak precision constraints and is
testable in the forthcoming collider experiments.
We have separated the new fermions in this model into
two classes under the Z2 transformations to explain the
PAMELA/Fermi positron/electron excesses in cosmic
rays.