Two SK-I Neutrino Sources?

Abstract

A search for a neutrino flux difference between weekdays and weekend days was undertaken for the average week of the Super-Kamiokande-I (SK-I) Experiment, using the 5-day period version of the SK-I data taken from May 31st, 1996 to July 15th, 2001. Arbitrarily uneven distributions of live time during the run time periods were considered before rejecting the null hypothesis. Such live time distributions were built into a robust method that calculated time-weighted neutrino flux means. The purpose was to show that the calculated results were unaffected by any distribution of live time, and thus that live time had no role in rejecting the null hypothesis. A significant (p << 0.001) difference was found and the most obvious neutrino flux change from weekdays to weekend days can be summarized as follows: "Some neutrinos took the weekend off, especially on Saturday".