Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 101: Neutrino Physics VIII
T 101.1: Vortrag
Freitag, 4. April 2025, 09:00–09:15, VG 3.103
Search for Light Sterile Neutrinos with the KATRIN Experiment — •Christoph Köhler1,2, Xaver Stribl1,2, and Susanne Mertens1,2 for the KATRIN collaboration — 1Technical University of Munich — 2Max Plabck Institute for Nuclear Physics
Light sterile neutrinos with a mass at the eV-scale could explain several anomalies observed in short-baseline neutrino oscillation experiments. The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to determine the effective electron anti-neutrino mass via the kinematics of tritium β–decay. The precisely measured β-spectrum can also be used to search for the signature of light sterile neutrinos.
In this talk we present the status of the light sterile neutrino analysis of the KATRIN experiment. We describe the method used to study the first five measurement campaigns. The obtained results are compared to findings of complementary experiments and anomalies in the field of light sterile neutrinos.
This work is supported by the Technical University of Munich, the Max Planck Institute for Nuclear Physics, the Helmholtz Association and by the Ministry for Education and Research BMBF (grant numbers 05A23PMA, 05A23PX2, 05A23VK2, and 05A23WO6). This project has received funding from the European Research Council (ERC) under the European Union Horizon 2020 research and innovation programme (grant agreement No. 852845).
Keywords: KATRIN; Neutrino; Sterile