HE Neutrinos beyond Standard Model: steriles and secret interactions

Discussion timeslot (ZOOM-Meeting): 12. July 2021 - 18:00
ZOOM-Meeting URL: https://desy.zoom.us/j/91999581729
ZOOM-Meeting ID: 91999581729
ZOOM-Meeting Passcode: ICRC2021
Corresponding Session: https://icrc2021-venue.desy.de/channel/31-Fundamental-Physics-with-Neutrinos-NU/60
Live-Stream URL: https://icrc2021-venue.desy.de/livestream/Discussion-05/6

Abstract:
'Ultra High Energy cosmogenic neutrinos may represent a unique opportunityrnto unveil possible new physics interactions in the neutrino sector. Atrnthis regard, we have investigated the effects on high and ultrahigh energyrnactive neutrino fluxes due to active-sterile secret interactions mediatedrnby a new pseudoscalar particle. These interactions become relevant atrnvery different energy scales depending on the masses of the scalarrnmediator and of sterile neutrino. As a consequence, we have foundrninteresting phenomenological implications on two benchmark fluxes wernconsider, namely an astrophysical power law flux, in the range below 100rnPeV, and a cosmogenic flux, in the Ultrahigh energy range.'

Authors: Ninetta Saviano
Indico-ID: 200
Proceeding URL: https://pos.sissa.it/395/1216