Search for Boosted Dark Matter Interacting With Electrons in Super-Kamiokande
Super-Kamiokande Collaboration: C. Kachulis, K. Abe, C. Bronner, Y., Hayato, M. Ikeda, K. Iyogi, J. Kameda, Y. Kato, Y. Kishimoto, Ll. Marti, M., Miura, S. Moriyama, M. Nakahata, Y. Nakano, S. Nakayama, Y. Okajima, A. Orii,, G. Pronost, H. Sekiya, M. Shiozawa, Y. Sonoda
TL;DR
This paper reports a search for boosted dark matter interactions with electrons in Super-Kamiokande data, setting limits on event rates from the Galactic Center and Sun without observing a significant excess.
Contribution
First search for boosted dark matter interacting with electrons in Super-Kamiokande data, establishing new constraints on boosted dark matter models.
Findings
No excess of electron scattering events observed
Limits set on boosted dark matter event rates
Constraints provided for models from dark matter annihilation or decay
Abstract
A search for boosted dark matter using 161.9 kiloton-years of Super-Kamiokande IV data is presented. We search for an excess of elastically scattered electrons above the atmospheric neutrino background, with a visible energy between 100 MeV and 1 TeV, pointing back to the Galactic Center or the Sun. No such excess is observed. Limits on boosted dark matter event rates in multiple angular cones around the Galactic Center and Sun are calculated. Limits are also calculated for a baseline model of boosted dark matter produced from cold dark matter annihilation or decay.
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