# ICHEP 2020

28 July 2020 to 6 August 2020
virtual conference
Europe/Prague timezone

## Astrophysical Visible Neutrino Decay

28 Jul 2020, 17:00
15m
virtual conference

#### virtual conference

Talk 02. Neutrino Physics

### Speaker

Dr Peter Denton (Brookhaven National Laboratory)

### Description

Neutrino decay modifies neutrino propagation in a unique way; not only is there flavor changing as there is in neutrino oscillations, there is also energy transport from initial to final neutrinos. The most sensitive direct probe of neutrino decay is currently IceCube which can measure the energy and flavor of neutrinos traveling over extragalactic distances. For the first time we calculate the flavor transition probability for the cases of visible and invisible neutrino decay, including the effects of the expansion of the universe, and consider the implications for IceCube. As an example, we demonstrate how neutrino decay addresses a tension in the IceCube data.

 Secondary track (number) 8

### Primary author

Dr Peter Denton (Brookhaven National Laboratory)

### Co-author

Dr Asli Abdullahi (Institute for Particle Physics Phenomenology (IPPP), Durham University)