Seesaw and leptogenesis: a triangular ansatz

Details Seesaw and leptogenesis: a triangular ansatz Seesaw and leptogenesis: a triangular ansatz

2010-09-30

arxiv.org/abs/1009.6175v3

Mod.Phys.Lett.A26:1375-1379,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, revised and corrected

Scientific paper

10.1142/S0217732311035274

A triangular ansatz for the seesaw mechanism and baryogenesis via leptogenesis is explored. In a basis where both the charged lepton and the Majorana mass matrix are diagonal, the Dirac mass matrix can generally be written as the product of a unitary times a triangular matrix. We assume the unitary matrix to be the identity and then an upper triangular Dirac matrix. Constraints from bilarge lepton mixing and leptogenesis are studied.

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