Detectability of the supernova relic neutrinos

Details Detectability of the supernova relic neutrinos Detectability of the supernova relic neutrinos

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003nupha.721..541a&link_type=abstract

Nuclear Physics A, Volume 721, p. C541-C544.

Physics

Nuclear Physics

1

Scientific paper

We investigate the flux and the event rate of the supernova relic neutrino background (SRN) at the Super-Kamiokande (SK) detector for various neutrino oscillation models with parameters inferred from recent experimental results. A realistic model of neutrino emission from supernova explosions are adopted in the calculation. The number flux over entire energy range is found to be ~ 11 cm-2 s-1. We discuss the detectability of SRN at SK, comparing this SRN flux with other background neutrinos in more detail than previous studies. Even though there is no energy window in which SRN is dominant, we might detect it as the distortion of the other background event. We found in the energy range 17-25 MeV the expected event rate at SK 0.4-0.7 yr-1. In this range, ten-year observation might enable us to detect SRN signal (at one sigma level) in the case of LMA solar neutrino solution.

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