Non-unitary neutrino propagation from neutrino decay

Journal Article · Sun Mar 01 00:00:00 EST 2015 · Physics Letters B

DOI:https://doi.org/10.1016/j.physletb.2015.01.002· OSTI ID:1197970

Berryman, Jeffrey M.; de Gouvêa, André; Hernández, Daniel; Oliveira, Roberto L. N.

Neutrino propagation in space–time is not constrained to be unitary if very light states – lighter than the active neutrinos – exist into which neutrinos may decay. If this is the case, neutrino flavor-change is governed by a handful of extra mixing and “oscillation” parameters, including new sources of CP-invariance violation. We compute the transition probabilities in the two- and three-flavor scenarios and discuss the different phenomenological consequences of the new physics. These are qualitatively different from other sources of unitarity violation discussed in the literature.

• Research Organization: Northwestern Univ., Evanston, IL (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: FG02-91ER40684; 2013/11651-2
• OSTI ID: 1197970
• Alternate ID(s): OSTI ID: 1192063
• Journal Information: Physics Letters B, Journal Name: Physics Letters B Vol. 742 Journal Issue: C; ISSN 0370-2693
• Publisher: Elsevier
• Country of Publication: Netherlands
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS