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Non-Unitary Neutrino Propagation From Neutrino Decay

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arxiv 1407.6631 v3 pith:3KEQB7XO submitted 2014-07-24 hep-ph

Non-Unitary Neutrino Propagation From Neutrino Decay

classification hep-ph
keywords neutrinodecaydifferentneutrinospropagationsourcesviolationactive
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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.

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Cited by 1 Pith paper

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  1. Visible Neutrino Decay As An Open Quantum System

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    A fully general open quantum system description of arbitrarily complex oscillating and decaying neutrino systems is developed and shown to be implementable via Lindblad equations, Liouvillian superoperators, and Kraus...