1109.3601 (Srdjan Sarikas et al.)

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

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

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.

View original: http://arxiv.org/abs/1109.3601