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Uncovering the neutrino mass ordering with the next galactic core-collapse supernova neutrino burst using water Cherenkov detectors

C\'esar Jes\'us-Valls
Oct 2022
摘要
A major conundrum of particle physics is what mass ordering (MO) followneutrinos. Due to matter effects the flavor content of the neutrino flux from aCore-Collapse Supernovae (CCSNe) is expected to be highly dependent on the trueneutrino MO. In this article, the potential to uncover the true neutrino MOusing CCSN neutrinos and water Cherenkov detectors is studied. A novel analysisstrategy is presented, designed to be robust to all existing systematicuncertainties and readily applicable to the Super-Kamiokande orHyper-Kamiokande experiments. The results show that for a paradigmatic CCSN at10~kpc, Hyper-Kamiokande might discriminate the true neutrino MO with aconfidence similar to 2-3~$\sigma$. In the case of a nearby CCSN at a radius of3.5~kpc (1~kpc) from Earth, Hyper-Kamiokande (Super-Kamiokande) would reach asensitivity beyond 5~$\sigma$.
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