2024/02/13 by S. Aiello, A. Albert, M. Alshamsi +275 · 1 voice · 1 citation
Physics and Astronomy · #astro-ph.HE #astro-ph.IM
paper · pdf · doi:10.1140/epjc/s10052-024-13137-2
arxiv published 2024/02/13 · arxiv updated 2024/10/17
The KM3NeT/ARCA neutrino detector is currently under construction at 3500 m depth offshore Capo Passero, Sicily, in the Mediterranean Sea. The main science objectives are the detection of high-energy cosmic neutrinos and the discovery of their sources. Simulations were conducted for the full KM3NeT/ARCA detector, instrumenting a volume of 1 km3, to estimate the sensitivity and discovery potential to point-like neutrino sources and an all-sky diffuse neutrino flux. This paper covers the reconstruction of track- and shower-like signatures, as well as the criteria employed for neutrino event selection. By leveraging both the track and shower observation channels, the KM3NeT/ARCA detector demonstrates the capability to detect the diffuse astrophysical neutrino flux within half a year of operation, achieving a 5σ statistical significance. With an angular resolution below 0.1^∘ for tracks and under 2^∘ for showers, the sensitivity to point-like neutrino sources surpasses existing observed limits across the entire sky.