Present status of solar and atmospheric neutrinos

Details Present status of solar and atmospheric neutrinos Present status of solar and atmospheric neutrinos

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999nuphs..76..425n&link_type=abstract

Nuclear Physics B Proceedings Supplements, Volume 76, Issue 1-3, p. 425-434.

Physics

Nuclear Physics

2

Scientific paper

The results from Super-Kamiokande on atmospheric neutrinos and solar neutrinos are presented. The analyses of atmospheric neutrinos using fully contained and partially contained events, upward-through-going muons, and upward-stopping muons, all show evidence for νμ oscillations. The obtained neutrino oscillation parameters are Δm2 of 10-3-10-2eV2 and sin22θ>0.8. The observed solar neutrino flux is 47% of the expectation from the standard solar model. No significant day/night difference is observed and a solar model independent limit on neutrino oscillation parameters is obtained. The spectral shape comparison of the recoil electrons between the data and the expectation gives 4.8% confidence level.

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