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T: Fachverband Teilchenphysik
T 82: Neutrino physics 9
T 82.8: Vortrag
Donnerstag, 7. März 2024, 17:45–18:00, Geb. 20.30: 2.058
Exploring eV-Scale Sterile Neutrinos with the KATRIN Experiment — •Shailaja Mohanty for the KATRIN collaboration — Institute of Astroparticle Physics, KIT, Karlsruhe, Germany
Sterile neutrinos, though not part of the standard three-neutrino framework, are a crucial component of various physics models. They have the potential to address anomalies observed in short-baseline neutrino oscillations, backed by some theoretical support for their existence. The Karlsruhe Tritium Neutrino (KATRIN) experiment, aiming at 0.3 eV/c2 (90% C.L.) sensitivity to the neutrino mass, measures the tritium β-decay endpoint spectrum with a high precision. The same spectrum is sensitive to sterile neutrino admixture. This presentation provides the current status of sterile neutrino search in the first five measurement campaigns of KATRIN using the analysis framework “KaFit”. The analysis procedure and sensitivity are discussed, along with assumptions about constraining active neutrino mass and their influence on sterile neutrino sensitivity.
This work is supported by the Helmholtz Association, the Ministry for Education and Research BMBF (grant numbers 05A23PMA, 05A23PX2, 05A23VK2 and 05A23WO6) and the Doctoral School “Karlsruhe School of Elementary and Astroparticle Physics: Science and Technology (KSETA)" through the GSSP program of the German Academic Exchange Service (DAAD).
Keywords: Sterile neutrino; KATRIN; eV scale; Sensitivity; BSM