Speaker
Description
KM3NeT is a multi-purpose neutrino observatory composed of underwater Cherenkov arrays with different geometries. Currently, two KM3NeT detectors are under construction in the Mediterranean Sea: ORCA, a compact and dense detector optimised for the high-statistic measurement of atmospheric neutrino physics, and ARCA, a set of two telescopes instrumenting a cubic kilometre to catch rare fluxes of extraterrestrial neutrinos. During its modular installation phase KM3NeT records data promptly upon deployment.
KM3NeT has an excellent performance in the reconstruction of coordinates, energy and flavour of neutrino events, and covers an energy range from the GeV to tens of PeV, opening up to a broad physics case.
Both ARCA and ORCA search for neutrinos produced in pair annihilations of dark matter, characterising the signature from sources such as the Sun and the Galactic Centre, and is in good visibility from the KM3NeT sites; presented here are results obtained with data recorded with partial detector configurations recently installed. KM3NeT also investigates indirect effects of physics beyond the Standard Model expectations, through modifications that those can induce to the flavour oscillation pattern of atmospheric neutrinos, such as non-standard interactions and neutrino quantum decoherence. The signature of heavy neutral fermions can be searched looking for double-cascade events at GeV energies, exploiting the relatively large volume (7 Mtons) densely instrumented by ORCA in its final configuration, having already avaliable 1.6 Mtons of recorded data.
