CP violation in neutrino mixing matrix and leptogenesis

Details CP violation in neutrino mixing matrix and leptogenesis CP violation in neutrino mixing matrix and leptogenesis

1999-06-09

arxiv.org/abs/hep-ph/9906307v1

Mod.Phys.Lett.A16:603,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages with one eps figure

Scientific paper

10.1142/S0217732301003528

The CP violation required in leptogenesis may have different origin, but in an effective theory they all are related to the rephasing invariant CP violating measure in the mixing matrix of the leptonic sector. We point out that the maximum amount of CP violation in some models can be estimated with our present knowledge of the neutrino mixing angles, which can help us understand the CP violation in the generation of the lepton asymmetry of the universe. For example, the possibility of leptogenesis may be ruled out in some models from an knowledge of the effective neutrino mass matrix.

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