"HE Neutrinos beyond Standard Model: steriles and secret interactions"
Presented by Ninetta Saviano, U. Naples
Wednesday, December 2, 2020, 2:30 pm — Videoconference / Virtual Event (see link below)
Abstract: Ultra High Energy cosmogenic neutrinos may represent a unique opportunity
to unveil possible new physics interactions in the neutrino sector. At
this regard, we have investigated the effects on high and ultrahigh energy
active neutrino fluxes due to active-sterile secret interactions mediated
by a new pseudoscalar particle. These interactions become relevant at
very different energy scales depending on the masses of the scalar
mediator and of sterile neutrino. As a consequence, we have found
interesting phenomenological implications on two benchmark fluxes we
consider, namely an astrophysical power law flux, in the range below 100
PeV, and a cosmogenic flux, in the Ultrahigh energy range.
Hosted by: Julia Gehrlein
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