Speaker
Description
The paradigm of the Standard Model of particle physics has only been extended, in the recent past, by the addition of neutrino masses and oscillations. Today, we can use neutrinos to verify our most fundamental theories, such as Lorentz invariance, which, if broken, introduces a preferred reference frame in the Universe. For neutrinos, the resulting phenomenology can predict flavour anisotropies dependent on the neutrino arrival directions, compounding over very large energies and propagation lengths. High-energy neutrinos from astrophysical sources are a unique probe into this parameter space at the highest energies available today and in the near-future. We use directional flavour compositions recovered from the IceCube High-Energy Starting Events (7.5 years of data) to place constraints on Lorentz invariance-violating parameters that generate flavour anisotropies.
