Speaker
Description
The Karlsruhe Tritium Neutrino (KATRIN) experiment performs a measurement of the effective electron neutrino mass with sub-eV sensitivity through high-precision spectroscopy of the tritium $\beta$-decay spectrum. Analysing 36 million $\beta$-electrons from five measurement campaigns, KATRIN presently provides an upper limit on the neutrino mass of $m_\nu < 0.45~\text{eV}$ at 90\% confidence.
In addition to its primary goal, KATRIN probes the existence of eV-scale sterile neutrinos by searching for distortions in the $\beta$-spectrum due to active-sterile neutrino mixing. New constraints in a minimal 3+1 sterile neutrino framework exclude significant regions of parameter space, particularly those motivated by short-baseline neutrino oscillation anomalies. These results complement reactor-based oscillation experiments such as STEREO and PROSPECT, disfavoring regions of parameter space previously supported by global oscillation fits and excluding the parameter space favored by the Neutrino-4 experiment. This talk will present the latest results from the KATRIN experiment based on a 259-day data set.
| Collaboration you are representing | KATRIN |
|---|
