Detection of massive supernova neutrinos.

Details Detection of massive supernova neutrinos. Detection of massive supernova neutrinos.

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999injpb..73..977c&link_type=abstract

Indian J. Phys., Part B, Vol. 73B, No. 6, p. 977 - 984

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Neutrinos: Supernovae, Neutrinos: Oscillations

Scientific paper

Neutrinos and antineutrinos of all three flavours are emitted during the post bounce phase of a core collapse supernova with νμ/ντ(ν¯μ/ν¯τ) having average energies more than that of νe(ν¯e). The author presents the effect of flavour oscillations on the neutrino flux and their expected number of events at the detector. The author performs a three-generation analysis and for the mass and mixing schemes considers a threefold maximal mixing model consistent with the solar and the atmospheric neutrino data and a scenario with one Δm2 ≡ 10-11eV2 (solar range) and the other Δm2 ≡ 10-18eV2, for which the oscillation length is of the order of the supernova distance. In both these scenarios there are no matter effects in the resultant neutrino spectrum and one is concerned with vacuum oscillations. The author finds that though neutrino oscillations result in a depletion in the number of νe and ν¯e coming from the supernova, the actual signals at the detectors are appreciably enhanced.

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