Katrin: [2021-07-09 18-28-07].mp4

Unlike cosmological observations, this measurement is direct and model-independent , meaning it does not rely on assumptions about the early universe. 4. Significance for Physics

The KATRIN experiment has successfully established a new world record for the upper limit of the , breaking the "1 eV barrier" for the first time in a laboratory setting. Using the beta decay of tritium, the international collaboration has limited the neutrino mass to less than 0.8 electronvolts (eV) with unprecedented precision. 2. Experimental Methodology

Scientists observe the tritium beta decay process, where a tritium nucleus decays into helium, an electron, and an antineutrino. katrin [2021-07-09 18-28-07].mp4

The analysis utilized approximately 36 million electron events collected between 2019 and 2021.

A giant 200-tonne spectrometer measures the energy of the emitted electrons. By analyzing the maximum energy (endpoint) of these electrons, the mass of the "missing" neutrino is inferred. 3. Key Findings (2021 Status) Using the beta decay of tritium, the international

KATRIN: Neutrinos are lighter than 0.8 electronvolts - sfb1258

🔬 Scientific Report: Direct Measurement of the Neutrino Mass Using the beta decay of tritium

KATRIN Experiment (Karlsruhe Institute of Technology) Date Reference: July 2021 Analysis Phase 1. Executive Summary