Search for Sterile Neutrinos with KM3NeT/ORCA

• Published in: Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)
• Main Authors: Domi, Alba, Coelho, Joao
• Other Authors: Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), KM3NeT, ANTARES
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2019
• Subjects: neutrino: detector; neutrino: sterile; neutrino: oscillation; neutrino: atmosphere; neutrino: sterile: search for; neutrino: energy: low; ANTARES; KM3NeT; exotic; sensitivity; [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]; [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]; Orca
• Online Access: https://hal.science/hal-02966274; https://doi.org/10.22323/1.358.0870

International audience 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.