A study of short-time periodic variation of the B8 solar neutrino flux at Super-Kamiokande

TL;DR

This study analyzed 1496 days of Super-Kamiokande solar neutrino data to detect short-term periodic flux variations, but found no significant periodicity, contributing to understanding neutrino flux stability.

Contribution

First comprehensive search for short-time periodic variations in solar neutrino flux using Super-Kamiokande data, establishing null results for such periodicities.

Findings

No significant periodicity detected in 1496 days of data

Constraints on short-term flux variation amplitudes

Supports flux stability hypothesis

Abstract

Super-Kamiokande(SK) is a real-time detector capable of measuring the exact time of solar neutrino events. This, combined with a relatively high yield of these events of roughly 15 per day, allows a search for short-time variations in the observed flux. Using all 1496 days of SK-I's solar data, we looked for periodic variations of the observed solar neutrino flux, and found no significant periodicity.