IIHE Invited seminar: Transient neutrino sources as probes of Beyond Standard Model Physics

Abstract: New neutrino interactions beyond the Standard Model (BSM) have been of much interest in not only particle physics but also cosmology and astroparticle physics. In the context of neutrino astronomy, neutrinos from an astrophysical source may have a delayed component as a result of new neutrino interactions as they propagate towards Earth. In this talk, I will look at the effects of these interactions on the arrival times and energy spectra of neutrinos from transient sources. First, we present a Monte Carlo–based framework to simulate high-energy neutrino “echoes” arising from secret neutrino interactions mediated by a scalar. We then turn to MeV-scale thermal neutrino emission from core-collapse supernovae, showing how interactions with ambient keV‑MeV dark matter via hidden mediators can induce significant time delays. A delayed signal after the next galactic core-collapse supernova can then be used to study neutrino-dark matter interactions via time-domain astronomy.