Suppression of self-induced flavor conversion in the supernova accretion phase

Self-induced flavor conversions of supernova (SN) neutrinos can strongly modify the flavor-dependent fluxes. We perform a linearized flavor stability analysis with accretion-phase matter profiles of a 15M[symbol: see text] spherically symmetric model and corresponding neutrino fluxes. We use realist...

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Bibliographic Details
Published in:Physical review letters 2012-02, Vol.108 (6), p.061101-061101, Article 061101
Main Authors: Sarikas, Srdjan, Raffelt, Georg G, Hüdepohl, Lorenz, Janka, Hans-Thomas
Format: Article
Language:English
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Summary:Self-induced flavor conversions of supernova (SN) neutrinos can strongly modify the flavor-dependent fluxes. We perform a linearized flavor stability analysis with accretion-phase matter profiles of a 15M[symbol: see text] spherically symmetric model and corresponding neutrino fluxes. We use realistic energy and angle distributions, the latter deviating strongly from quasi-isotropic emission, thus accounting for both multiangle and multienergy effects. For our matter and neutrino density profile we always find stable conditions: flavor conversions are limited to the usual Mikheyev-Smirnov-Wolfenstein effect. In this case one may distinguish the neutrino mass hierarchy in a SN neutrino signal if the mixing angle θ13 is as large as suggested by recent experiments.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.108.061101