Supernova neutrino three-flavor evolution with dominant collective effects

Details Supernova neutrino three-flavor evolution with dominant collective effects Supernova neutrino three-flavor evolution with dominant collective effects

2008-12-16

arxiv.org/abs/0812.3031v2

JCAP 0904:030,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, including 9 figures (1 section with 3 figures added). Accepted for publication in JCAP

Scientific paper

10.1088/1475-7516/2009/04/030

Neutrino and antineutrino fluxes from a core-collapse galactic supernova are studied, within a representative three-flavor scenario with inverted mass hierarchy and tiny 1-3 mixing. The initial flavor evolution is dominated by collective self-interaction effects, which are computed in a full three-family framework along an averaged radial trajectory. During the whole time span considered (t=1-20 s), neutrino and antineutrino spectral splits emerge as dominant features in the energy domain for the final, observable fluxes. Some minor or unobservable three-family features (e.g., related to the muonic-tauonic flavor sector) are also discussed for completeness. The main results can be useful for SN event rate simulations in specific detectors.

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