Uncertainty of the Solar Neutrino Energy Spectrum

Details Uncertainty of the Solar Neutrino Energy Spectrum Uncertainty of the Solar Neutrino Energy Spectrum

1999-06-30

arxiv.org/abs/hep-ph/9906553v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, proceeding latex file, Improvement of submitted version (April 15) to proceeding of 17 International Workshop on Weak

Scientific paper

The solar neutrino spectrum measured by the Super-Kamiokande shows an excess in high energy bins, which may be explained by vacuum oscillation solution or $hep$ neutrino effect. Here we reconsider an uncertainty of the data caused by the tail of the energy resolution function. Events observed at energy higher than 13.5 MeV are induced by the tail of the resolution. At Super-Kamiokande precision level this uncertainty is no more than few percent within a Gaussian tail. But a power-law decay tail at 3 $\sigma$ results considerable excesses in these bins, which may be another possible explanation of the anomaly in 708d(825d) data.

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