[#Student Seminars] Neutrinos beneath the waves

por Nafis Rezwan Khan Chowdhury (IFIC, Valencia)

jueves 19 nov. 2020 16:30 → 18:30 Europe/Madrid

Universe

The ANTARES neutrino telescope and its next-generation offspring, KM3NeT, located at the abyss of the Mediterranean sea, has been designed to study neutrinos and antineutrinos from a variety of sources over a wide range of energies and path lengths. One  of  the primary  focuses of the experiments is to observe the Earth matter effects using the measured energy and zenith angle dependence of atmospheric neutrinos in the multi-GeV range. The study of atmospheric neutrinos is instrumental in addressing some of the outstanding issues in neutrino oscillation physics, especially the fundamental question of the neutrino mass ordering, as well as probing new physics scenarios beyond the Standard Model.

In this talk, I will present the physics potential of ANTARES and KM3NeT-ORCA to measure sub-dominant effects in atmospheric neutrino oscillations vis-a-vis non-standard neutrino interactions (NSIs). A likelihood-based search for NSIs with 10 years of atmospheric muon-neutrino data recorded with ANTARES will be reported and sensitivity projections for KM3NeT-ORCA will be shown. The impact of NSIs on the discovery potential of KM3NeT-ORCA towards the neutrino mass ordering (NMO) will be outlined as well. Remarkably, the limits obtained with ANTARES in the NSI μ−τ sector were found to be more stringent than current experimental limits.