The high-energy cosmic neutrinos seen by IceCube allow us to perform new, powerful tests of high-energy particle physics and astrophysics. In particular, there is vast potential to perform these tests using the high-energy flavor composition, i.e., the proportion of electron, muon, and tau neutrinos in the high-energy neutrino flux. However, presently, these tests are limited by uncertainties in the measurement of flavor in neutrino telescopes and of the neutrino mixing parameters in oscillation experiments. Fortunately, these limitations will be overcome in the next two decades, thanks to new neutrino telescopes---IceCube-Gen2, KM3NeT, Baikal GVD, P-ONE, TAMBO---and new oscillation experiments---JUNO, DUNE, Hyper-Kamiokande. Based on detailed projections of their performance, I will show that in the 2030s flavor will finally become a precision tool for high-energy neutrino physics and astrophysics. I will showcase two examples: inferring the astrophysical neutrino production mechanism and placing stronger constraints on the neutrino lifetime.
|First author||Mauricio Bustamante|
|Collaboration / Activity||-|