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arXiv · 1109.3601

Suppression of Self-Induced Flavor Conversion in the Supernova Accretion Phase

Srdjan Sarikas·Georg G. Raffelt·Lorenz Hüdepohl·Hans-Thomas Janka
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Abstract

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 15 M_sun 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 multi-angle and multi-energy effects. For our matter and neutrino density profile we always find stable conditions: flavor conversions are limited to the usual MSW effect. In this case one may distinguish the neutrino mass hierarchy in a SN neutrino signal if the mixing angle theta_13 is as large as suggested by recent experiments.

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Srdjan Sarikas, Georg G. Raffelt, Lorenz Hüdepohl, Hans-Thomas Janka. 2012-02-20. Suppression of Self-Induced Flavor Conversion in the Supernova Accretion Phase. https://doi.org/10.1103/physrevlett.108.061101

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