Supernova neutrino halo and the suppression of self-induced flavor conversion

Details Supernova neutrino halo and the suppression of self-induced flavor conversion Supernova neutrino halo and the suppression of self-induced flavor conversion

2012-04-04

arxiv.org/abs/1204.0971v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Brief Report related to our previous paper PRL 108 (2012) 061101 [arXiv:1109.3601]

Scientific paper

Neutrinos streaming from a supernova (SN) core occasionally scatter in the envelope, producing a small "neutrino halo" with a much broader angle distribution than the primary flux originating directly from the core. Cherry et al. (2012) have recently pointed out that, during the accretion phase, the halo actually dominates neutrino-neutrino refraction at distances exceeding some 100 km. However, the multi-angle matter effect (which increases if the angle distribution is broader) still appears to suppress self-induced flavor conversion during the accretion phase.

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