Possible trace of neutrino nonstandard interactions in the supernova

Details Possible trace of neutrino nonstandard interactions in the supernova Possible trace of neutrino nonstandard interactions in the supernova

2011-11-29

arxiv.org/abs/1111.6939v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 eps figures. Contribution presented by Joao Pulido to TAUP 2011, Munich, September 2011

Scientific paper

Neutrino non-standard interactions (NSI), previously introduced for the sun, are studied in the supernova context. For normal hierarchy the probability for electron neutrinos and antineutrinos at low energy ($E\lesssim 0.8-0.9 MeV$) is substantially increased with respect to the non-NSI case and joins its value for inverse hierarchy which is constant with energy. Also for inverse hierarchy the NSI and non-NSI probabilities are the same for each neutrino and antineutrino species. These are the possible visible effects of NSI in the supernova. The decay into antineutrinos, which has been previously shown to be implied by dense matter, cannot be seen experimentally, owing to the smallness of the antineutrino production probability.

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