Search for Supernova Relic Neutrinos at Super-Kamiokande
The Super-Kamiokande Collaboration

TL;DR
This study searched for supernova relic neutrinos using Super-Kamiokande data, setting upper limits on their flux and providing constraints on supernova models, but did not detect a signal.
Contribution
First search for supernova relic neutrinos with extensive Super-Kamiokande data, establishing new upper limits on neutrino fluxes in the process.
Findings
No significant neutrino signal detected.
Set upper limits on neutrino flux ranging from 20 to 130 nu_e bar cm^-2 s^-1.
Established an upper bound of 1.2 nu_e bar cm^-2 s^-1 for E_nu > 19.3 MeV.
Abstract
A search for the relic neutrinos from all past core-collapse supernovae was conducted using 1496 days of data from the Super-Kamiokande detector. This analysis looked for electron-type anti-neutrinos that had produced a positron with an energy greater than 18 MeV. In the absence of a signal, 90% C.L. upper limits on the total flux were set for several theoretical models; these limits ranged from 20 to 130 nu_e bar cm^-2 s^-1. Additionally, an upper bound of 1.2 nu_e bar cm^-2 s^-1 was set for the supernova relic neutrino flux in the energy region E_nu > 19.3 MeV.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
