September 14, 2023
Journal Article
Tritium Beta Spectrum Measurement and Neutrino Mass Limit from Cyclotron Radiation Emission Spectroscopy
Abstract
The absolute scale of the neutrino mass plays a critical role in physics at every scale, from the particle to cosmological. Measurements of the tritium endpoint spectrum have provided the most precise direct limit on the neutrino mass scale. In this Letter, we present advances by Project 8 to the Cyclotron Radiation Emission Spectroscopy (CRES) technique culminating in the first frequency based neutrino mass limit. With only a cm3-scale physical detection volume, a limit of mßPublished: September 14, 2023