Probing nonstandard neutrino interactions with supernova neutrinos
- AHEP Group, Institut de Fisica Corpuscular, C.S.I.C/Universitat de Valencia, Edifici Instituts d'Investigacio, Apt. 22085, E-46071 Valencia (Spain)
We analyze the possibility of probing nonstandard neutrino interactions (NSI, for short) through the detection of neutrinos produced in a future galactic supernova (SN). We consider the effect of NSI on the neutrino propagation through the SN envelope within a three-neutrino framework, paying special attention to the inclusion of NSI-induced resonant conversions, which may take place in the most deleptonized inner layers. We study the possibility of detecting NSI effects in a Megaton water Cherenkov detector, either through modulation effects in the {nu}{sub e} spectrum due to (i) the passage of shock waves through the SN envelope, (ii) the time dependence of the electron fraction, and (iii) the Earth matter effects; or, finally, through the possible detectability of the neutronization {nu}{sub e} burst. We find that the {nu}{sub e} spectrum can exhibit dramatic features due to the internal NSI-induced resonant conversion. This occurs for nonuniversal NSI strengths of a few %, and for very small flavor-changing NSI above a fewx10{sup -5}.
- OSTI ID:
- 21027676
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 76, Issue 5; Other Information: DOI: 10.1103/PhysRevD.76.053001; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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