Dortmund 2021 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 18: Neutrino physics without accelerators I

T 18.1: Gruppenbericht

Montag, 15. März 2021, 16:00–16:20, Tr

The Project 8 neutrino mass experiment: First tritium results and future prospects — •Christine Claessens and Sebastian Böser for the Project 8 collaboration — PRISMA+ Cluster of Excellence, JGU Mainz

The Project 8 collaboration aims for a direct measurement of the absolute neutrino mass scale from the distortion of the tritium decay spectrum near the endpoint. To this end, the collaboration has successfully established Cyclotron Radiation Emission Spectroscopy (CRES), a frequency-based approach for measuring differential beta decay spectra. By making use of the advantages of the CRES technique, Project 8 intends to overcome the statistical and systematic limitations of current-generation direct neutrino mass measurement methods and achieve a final sensitivity of 40 meV. To meet this goal, the collaboration has divided the development of the experiment into four phases with Phase II data collection completed in 2020. In this contribution I will report on the status and prospects of the Project 8 experiment, presenting the results of the first tritium spectrum recorded with the Phase II CRES prototype setup and providing an overview of systematic effects and plans to address them in the future Phases III and IV.