For a few years, one of particle physics’ most unsettling numbers seemed to be pointing somewhere strange. The trouble ...

A new calculation helps narrow down the mass of the W boson, one of the heaviest fundamental particles in the universe ...

The Belle II experiment is a large research effort aimed at precisely measuring weak-interaction parameters, studying exotic hadrons (i.e., a class of subatomic particles) and searching for new ...

The simplicity of a hydrogen atom makes it an ideal model for studying atomic structure and interactions. Yet, despite the ...

Fermilab’s Mu2e experiment has reached a critical assembly stage with its 60-ton cosmic-ray veto system in the detector hall, ...

In many quantum measurement experiments and thought experiments, measurement results appear that do not seem to have classic explanations. As example: In quantum particle spin experiments, entangled ...