IAP - HIgh-Energy Universe Group Seminar (Juliana Stachurska - Neutrinos) (18/18)
206
KIT CN Bld 425
WS 2025/26
Juliana Stachurska
Universiteit Gent, Belgioum
"Neutrinos at the lowest and highest energies"
Abstract: Neutrinos at low and high energies offer unique possibilities to study critical questions of both particle physics and cosmology. A neutrino’s lowest possible energy is given by its rest mass of thus far unknown value. Lower mass limits, implied by the observation of neutrino oscillation, present a contradiction to the Standard Model. Upper mass limits have recently been greatly tightened by KATRIN. The next-generation neutrino mass experiment requires various technological challenges to be overcome. I will discuss how these challenges are being addressed by the Project 8 collaboration.
Traveling almost unimpeded, very high energy neutrinos reach us from the depths of the Universe, and the inner regions of cosmic particle accelerators. This makes them ideal to study the processes at cosmic particle accelerators, as well as New Physics processes which could affect neutrino propagation over the vast distances. I will focus on what we can learn by measuring the astrophysical flavor composition with IceCube, with a particular emphasis on tau neutrinos.