Search for Boosted Dark Matter Interacting With Electrons in Super-Kamiokande

摘要

A search for boosted dark matter using 161.9 kiloton-years ofSuper-Kamiokande IV data is presented. We search for an excess of elasticallyscattered electrons above the atmospheric neutrino background, with a visibleenergy between 100 MeV and 1 TeV, pointing back to the Galactic Center or theSun. No such excess is observed. Limits on boosted dark matter event rates inmultiple angular cones around the Galactic Center and Sun are calculated.Limits are also calculated for a baseline model of boosted dark matter producedfrom cold dark matter annihilation or decay.