Volume 476 - 42nd International Conference on High Energy Physics (ICHEP2024) - Neutrino Physics Posters
First glance at the latest science runs of the KATRIN neutrino-mass experiment using the KaFit analysis package
J. Štorek*, R. Salomon  on behalf of the KATRIN collaboration
*: corresponding author
Full text: pdf
Pre-published on: December 17, 2024
Published on: April 29, 2025
Abstract
The Karlsruhe Tritium Neutrino (KATRIN) experiment aims at measuring the neutrino mass with a sensitivity better than $0.3$ eV at 90% confidence level (CL) by performing a precision measurement of the tritium $\beta$-decay spectrum. The current world-leading upper limit of $m_\nu \leq 0.45$ eV (90% CL) was determined from a combined analysis of the first five measurement campaigns (36 million collected electrons until 2021). As of summer 2024, the dataset has expanded to 13 measurement campaigns which feature 155 million collected electrons in the region of interest.

Following KATRIN blind-analysis scheme, all the studies were first conducted on simulated Asimov data using the KaFit analysis software. While systematic uncertainties need to be evaluated specifically for each campaign, it has been shown in this study that the statistical neutrino-mass sensitivity for the data collected until summer 2024 reaches $0.3$ eV (90% CL).
DOI: https://doi.org/10.22323/1.476.0213
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