Physicists in Germany have performed the most accurate measurement of the mass of the fundamental particle neutrinos. The finding deepens physicists’ attempts to uncover laws of nature beyond even the best current theories.

The standard model of particle physics – the best theory which explains the fundamental forces and particles of nature – posits that neutrinos are massless. Experiments, however, suggest that they do have mass.

Measuring the neutrino mass could explain the limitations of the standard model and offer insights into new areas of physics and beyond.