Dortmund 2021 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 43: Neutrino physics without accelerators II
T 43.3: Vortrag
Dienstag, 16. März 2021, 16:30–16:45, Tr
KATRIN neutrino mass results from the second science run — Wonqook Choi, Stephanie Hickford, and •Leonard Köllenberger for the KATRIN collaboration — Institute for Astroparticle Physics and Institute of Experimental Particle Physics, Karlsruhe Institute of Technology
The KATRIN collaboration aims to determine the neutrino mass with a sensitivity of 0.2 eV/c2 (90 % CL). This will be achieved by measuring the endpoint region of the tritium β-electron spectrum. The first four-week KATRIN science run was taken in Spring 2019, and yielded a neutrino mass limit of mν ≤ 1.1 eV 90 % CL).
The second KATRIN science run was taken in Autumn 2019. This measurement data was taken over seven weeks with a substantially higher tritium column density in the source, leading to approximately twice the statistics collected compared to the first KATRIN science run. One of the neutrino mass analyses of this data was performed using the KASPER software framework including systematics via free parameters with constraints. This analysis and the neutrino mass results will be presented in this talk.
This work is supported by the Helmholtz Association (HGF), the Ministry for Education and Research BMBF (05A17PM3, 05A17PX3, 05A17VK2, and 05A17WO3), the Helmholtz Alliance for Astroparticle Physics (HAP), and the Helmholtz Young Investigator Group (VH-NG-1055).