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Title: 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.
Authors:
 [1] ;  [1] ;  [1] ;  [2]
  1. Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy.
  2. Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy; Gleb Wataghin Univ. Estadual de Campinas, Campinas, Sao Paulo (Brazil)
Publication Date:
Grant/Contract Number:
FG02-91ER40684; 2013/11651-2
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 742; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS
OSTI Identifier:
1197970
Alternate Identifier(s):
OSTI ID: 1192063