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T: Fachverband Teilchenphysik
T 21: Neutrino Physics without Accelerators 2
T 21.7: Talk
Monday, March 21, 2022, 17:50–18:05, T-H34
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.