Tribimaximal Mixing, Leptogenesis, and theta13

Details Tribimaximal Mixing, Leptogenesis, and theta13 Tribimaximal Mixing, Leptogenesis, and theta13

2008-07-25

arxiv.org/abs/0807.4176v2

Phys.Lett.B668:210-215,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Results generalized to include flavored leptogenesis

Scientific paper

10.1016/j.physletb.2008.08.028

We show that seesaw models based on flavor symmetries (such as A_4 and Z_7 X
Z_3) which produce exact tribimaximal neutrino mixing, also imply a vanishing
leptogenesis asymmetry. We show that higher order symmetry breaking corrections
in these models can give a non-zero leptogenesis asymmetry and generically also
give deviations from tribimaximal mixing and a non-zero theta13 >~ 10^(-2)

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