Disentangling sub-GeV dark matter from the diffuse supernova neutrino background using Hyper-Kamiokande

The upcoming Hyper-Kamiokande (HyperK) experiment is expected to detect the Diffuse Supernova Neutrino Background (DSNB). This requires ponder all possible sources of background. Sub-GeV dark matter (DM) which annihilates into neutrinos a potential background that has not been considered so far. We simulate DSNB and DM signals, as well backgrounds in HyperK detector. find DM-induced could indeed alter extraction correct values parameters interest for physics. Since an isotropic signal, originates primarily from Galactic centre, we show this effect be alleviated with on-off analysis.