V. J. Stenger

Abstract: We present an analysis of atmospheric neutrino data from a 33.0 kton yr (535-day) exposure of the Super-Kamiokande detector. The data exhibit a zenith angle dependent deficit of muon neutrinos which is inconsistent with expectations based on calculations of the atmospheric neutrino flux. Experimental biases and uncertainties in the prediction of neutrino fluxes and cross sections are unable to explain our observation. The data are consistent, however, with two-flavor ${\ensuremath{ u}}_{\ensuremath{\mu}}\ensuremath{\leftrightarrow}{\ensuremath{ u}}_{\ensuremath{\tau}}$ oscillations with ${sin}^{2}2\ensuremath{\theta}g0.82$ and $5\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}l\ensuremath{\Delta}{m}^{2}l6\ifmmode\times\else\texttimes\fi{}1{0}^{\ensuremath{-}3}\mathrm{eV}{}^{2}$ at 90% confidence level.

TL;DR: The first results of the solar neutrino flux measurement from Super-Kamiokande are presented in this article, where the results are obtained from data taken between 31 May 1996, and 23 June 1997.

TL;DR: A total of 614 upward throughgoing muons were observed by Super-Kamiokande during 537 detector live days and the measured muon flux is [1.74{plus_minus} 0.02(sys)]{times} 10{sup {minus}13} cm{sup 2}thinsp2{theta} {gt}0.

TL;DR: In this article, a search for day-night variations in the solar neutrino flux resulting from neutrinos oscillations has been carried out using the 504 day sample of solar NE data obtained at Super-Kamiokande.

TL;DR: In this article, a measurement of the energy spectrum of recoil electrons from solar neutrino scattering in the Super-Kamiokande detector is presented, where the shape of the measured spectrum is compared with the expectation for solar {sup 8}B neutrinos.