Silver-110’s decay reveals a promising path to measure antineutrino mass. New data could reshape future neutrino studies.

Scientists are trying to solve a decade-long mystery by determining the identity of anomalous signals detected from below ice ...

Nearly a decade ago, a detector searching for ghostly cosmic particles found two anomalous signals in Antarctic ice. But ...

Still, the results so far are impressive. In 2022, KATRIN set a new upper limit for the neutrino mass. With the latest measurements, that limit has been cut in half—now at just 0.45 electron volts.

The KATRIN experiment began operations in 2019. It seeks to constrain the neutrino’s mass by looking at the energy spectrum of electrons and electron antineutrinos emitted by decaying tritium, a ...

With the current data from the KATRIN experiment, an upper limit of 0.45 electron volt/c 2 (corresponding to 8 x 10 -37 kilograms) could be derived for the neutrino mass.

For context, that’s less than one-millionth the mass of an electron, which clocks in at a comparatively gargantuan 511,000 eV. So, yeah—neutrinos are ridiculously lightweight.

According to the experiment, the effective electron neutrino mass cannot be more than 0.45 electron volts, which is equivalent to 8×10 -37 kilograms (1.76×10 -36 pounds).

The neutrino’s mass limits the maximum energy the electron can have. Using measurements of a whopping 36 million electrons, the researchers looked for that subtle effect of the antineutrino’s ...

The findings establish the most stringent laboratory-based upper limit on the effective electron neutrino mass, placing it at < 0.45 eV with a 90% confidence level.