Seminar #9: Alessio Giarnetti, "Beyond MSW: Phenomenological Signatures of Collective Flavour Conversions in Supernova Neutrinos at DUNE"
by
Lecture Hall
3rd Wing
Abstract: The next Galactic supernova will produce a burst of ~10^58 neutrinos
carrying unique information about the dense stellar interior. However,
the integrity of this information depends on our ability to decode
flavor conversions, which drastically reshape the neutrino signal
before it reaches Earth. Using DUNE as a benchmark detector, the
phenomenological imprints of three conversion mechanisms (standard MSW
resonances, slow energy-dependent collective oscillations, and fast
flavor instabilities) will be discussed in this talk. The feasibility
of reconstructing the primary emission flux and our capacity to
discriminate between these scenarios will be therefore assessed. The
results have direct consequences for how the astrophysics of the next
supernova is interpreted and for whether the neutrino parameters
extracted from it can be trusted.
Monojit Ghosh