Seesaw and leptogenesis: a triangular ansatz

Abstract

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.

arXiv comment6 pages, revised and corrected

References in corpus (6)

• CP violating decays in leptogenesis scenarios
• Baryogenesis through leptogenesis
• Minimal Scenarios for Leptogenesis and CP Violation
• Broken mu-tau Symmetry and Leptonic CP Violation
• Triangular Textures for Quark Mass Matrices
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Cited by in corpus (1)

• Non-zero ${\theta }_{13}$ from the Triangular Ansatz and Leptogenesis