PSILOGO

Laboratory for Particle Physics (LTP)


LTP Colloquium

Making a more precise neutrino mass measurement, with "Project 8"

Thursday, October 30, 2025, 16:00
WBGB/019

Larisa Thorne, Mainz University

Abstract:
There have been significant gains in characterizing neutrino properties in recent years, however the absolute neutrino mass scale continues to be elusive. The Project 8 collaboration seeks to probe this quantity directly via kinematic analysis of tritium beta decay, using the cyclotron radiation emission spectroscopy (CRES) technique on an atomic tritium source. CRES employs a frequency-based approach to measure tritium beta decay spectra in the endpoint region, where the spectral shape is most sensitive to distortions from the neutrino mass. I will present a roadmap of Project 8 towards neutrino mass measurement, with a design sensitivity of 40 meV. This includes recent results from our successful demonstrator experiment with tritium, as well as status updates on the components comprising the experiment's future full-scale version.