Mainz 2022 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 44: Astroparticle Physics II
HK 44.4: Talk
Wednesday, March 30, 2022, 15:15–15:30, HK-H10
Status of the KATRIN neutrino mass analysis using Monte Carlo propagation and a novel neural network approach — Christian Karl1,2, Susanne Mertens1,2, Alessandro Schwemmer1,2, and •Christoph Wiesinger1,2 for the KATRIN collaboration — 1Max-Planck-Institut für Physik, München — 2Physik-Department, Technische Universität München, Garching
The Karlsruhe Tritium Neutrino (KATRIN) experiment probes the effective electron anti-neutrino mass by a precision measurement of the tritium beta-decay spectrum near the endpoint. A world-leading upper limit of 0.8 eV c−2 (90 % CL) has been set with the first two measurement campaigns. New operational conditions for an improved signal-to-background ratio, the reduction of systematic uncertainties and a substantial increase in statistics allow to expand this reach. The performance figures of three additional datasets, analysed with the Monte Carlo propagation method, and an outlook on their combination using a novel neural network technique will be presented in this talk.