Search for anti-electron-neutrinos from the Sun at Super-Kamiokande-I

Abstract

We present the results of a search for low energy ${\bar{\nu }}_e$ from the Sun using 1496 days of data from Super-Kamiokande-I. We observe no significant excess of events and set an upper limit for the conversion probability to ${\bar{\nu }}_e$ of the ${}^8$B solar neutrino. This conversion limit is 0.8% (90% C.L.) of the standard solar model's neutrino flux for total energy = 8 MeV -- 20 MeV. We also set a flux limit for monochromatic ${\bar{\nu }}_e$ for $E_{{\bar{\nu }}_e}$ = 10 MeV -- 17 MeV.

5 pages(LaTex), 5 figures, submitted to Phys. Rev. Letters