Speaker
Akita Kensuke
(IBS-CTPU)
Description
We forecast constraints on neutrino decay via capture of the Cosmic Neutrino Background (CνB) on tritium, with emphasis on the PTOLEMY-type experiment. Although direct observations of the CνB are still in their very early stages, future direct observations of the CνB will impose significant constraints on a neutrino lifetime in the region of the age of the universe. We discuss the would-be observed spectra for unstable neutrinos, and the constraints on a neutrino lifetime in cosmic neutrino capture on tritium, and the required energy resolution and exposure. This presentation is based on arXiv: 2109.02900.
