The analysis utilized approximately 36 million electron events collected between 2019 and 2021.
The 2021 data confirmed that neutrinos are at least one million times lighter than electrons.
KATRIN: Neutrinos are lighter than 0.8 electronvolts - sfb1258
A windowless gaseous molecular tritium source (the world's most intense).
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)
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 analysis utilized approximately 36 million electron events collected between 2019 and 2021.
The 2021 data confirmed that neutrinos are at least one million times lighter than electrons.
KATRIN: Neutrinos are lighter than 0.8 electronvolts - sfb1258
A windowless gaseous molecular tritium source (the world's most intense).
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)
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
