CP-violation from non-unitary leptonic mixing

Abstract

A low-energy non-unitary leptonic mixing matrix is a generic effect of a large class of theories accounting for neutrino masses. It is shown how the extra CP-odd phases of a general non-unitary matrix allow for sizeable CP-asymmetries in channels other than those dominant in the standard unitary case. The ${\nu }_{\mu }\to {\nu }_{\tau }$ channel turns out to be an excellent tool to further constrain moduli and phases. Furthermore, we clarify the relationship between our approach and the so-called "non-standard neutrino interactions" schemes: the sensitivities explored here apply as well to such constructions.

14 pages, 4 eps figures. References updated

References in corpus (3)

• Discovery reach for non-standard interactions in a neutrino factory
• Effects of non-standard interactions in the MINOS experiment
• On the exact formula for neutrino oscillation probability by Kimura, Takamura and Yokomakura

Cited by in corpus (8)

• Correlation between the Charged Current Interactions of Light and Heavy Majorana Neutrinos
• Testing non-unitarity of neutrino mixing matrices at neutrino factories
• Implications of Leptonic Unitarity Violation at Neutrino Telescopes
• A Compromise between Neutrino Masses and Collider Signatures in the Type-II Seesaw Model
• Non-unitary deviation from the tri-bimaximal lepton mixing and its implications on neutrino oscillations
• Interference bands in decays of doubly-charged Higgs bosons to dileptons in the minimal type-II seesaw model at the TeV scale
• TeV-scale Type-II Seesaw Models and Possible Collider Signatures
• CP asymmetries from non-unitarity leptonic mixing