Search for Sterile Neutrinos with KM3NeT/ORCA
2019 July 22
Neutrino Telescopes such as ANTARES and KM3NeT are promising candidates to probe exotic oscillation phenomena such as sterile neutrinos. ANTARES (Astronomy with a Neutrino Telescope and Abyss Environmental RESearch) is the largest deep-sea neutrino telescope in operation, covering an area of 0.01 km3 and taking data since 2007. KM3NeT in totality is much more extended than ANTARES and it is under construction in the Mediterranean Sea. When completed, it will consist of two separate detectors: ARCA (Astroparticle Research with Cosmics in the Abyss), optimised for high-energy neutrino astronomy, and ORCA (Oscillation Research with Cosmics in the Abyss) for neutrino oscillation studies with atmospheric neutrinos. ORCA will have an effective mass of 8 Mtons and a low neutrino energy detection threshold of 1 GeV. For this reason it is a promising candidate to study neutrinos properties. Here we present the upper limits from ANTARES and sensitivities of ORCA to sterile neutrinos in the (3+1) model.