Astroparticle Physics in Hyper-Kamiokande

TL;DR

Hyper-Kamiokande is a proposed large-scale neutrino detector aiming to significantly advance astroparticle physics research, including supernova neutrinos, solar neutrinos, and dark matter, with potential enhancements from a second detector in Korea.

Contribution

This paper provides an overview of Hyper-Kamiokande's design, projected physics capabilities, and potential sensitivity improvements with a second detector location.

Findings

Enhanced sensitivity to low-energy neutrinos.

Projected detection of supernova neutrinos and solar neutrinos.

Potential for improved dark matter indirect searches.

Abstract

Hyper-Kamiokande is a proposed next-generation general purpose neutrino detection experiment. It comprises an underground water Cherenkov detector that will be more than 8 times as large as the highly successful Super-Kamiokande and use significantly improved photodetectors with the same 40 % photocoverage. The resulting sensitivity improvements will particularly benefit astroparticle physics at low energies. This contribution to the EPS-HEP 2017 proceedings gives an overview over Hyper-Kamiokande and presents its projected physics reach in the areas of supernova neutrinos, solar neutrinos and indirect dark matter searches, based on the current design report. It also discusses additional sensitivity improvements if the second detector is built in Korea in a location with a higher overburden.