Non-unitary neutrino propagation from neutrino decay
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.
- Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy.
- Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy; Gleb Wataghin Univ. Estadual de Campinas, Campinas, Sao Paulo (Brazil)
- Publication Date:
- OSTI Identifier:
- Grant/Contract Number:
- FG02-91ER40684; 2013/11651-2
- Published Article
- Journal Name:
- Physics Letters. Section B
- Additional Journal Information:
- Journal Volume: 742; Journal Issue: C; Journal ID: ISSN 0370-2693
- Research Org:
- Northwestern Univ., Evanston, IL (United States)
- Sponsoring Org:
- Country of Publication:
- United States
- 79 ASTRONOMY AND ASTROPHYSICS
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