Search for ${\overline{\ensuremath{\nu}}}_{e}$ from the Sun at Super-Kamiokande-I

Search for ${\bar{ν}}_{e}$ from the Sun at Super-Kamiokande-I

Y. Gando et al. (Super-Kamiokande Collaboration)

Phys. Rev. Lett. 90, 171302 – Published 1 May 2003

Abstract

We present the results of a search for low energy ${\bar{ν}}_{e}$ 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 ${\bar{ν}}_{e}$ 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 $energy = 8 - 20 M e V$ . We also set a flux limit for monochromatic ${\bar{ν}}_{e}$ for $E_{{\bar{ν}}_{e}} = 10 - 17 M e V$ .