Effect of flavor mixing on the time delay of massive supernova neutrinos

Details Effect of flavor mixing on the time delay of massive supernova neutrinos Effect of flavor mixing on the time delay of massive supernova neutrinos

2000-03-27

arxiv.org/abs/hep-ph/0003256v1

Phys.Lett. B479 (2000) 402-410

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 5 figures. To appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(00)00351-8

The neutrinos and antineutrinos of all the three flavors released from a galactic supernova will be detected in the water Cerenkov detectors. We show that even though the neutral current interaction is flavor blind, and hence neutrino flavor mixing cannot alter the total neutral current signal in the detector, it can have a non-trivial impact on the delay of massive neutrinos and alters the neutral current event rate as a function of time. We have suggested various variables of the neutral and charged current events that can be used to study this effect. In particular the ratio of charged to neutral current events can be used at early times while the ratio of the energy moments for the charged to the neutral current events can form useful diagnostic tools even at late times to study neutrino mass and mixing.

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