Physicists now have a brand-new measurement of a property of the muon called the anomalous magnetic moment that improves the precision of their previous result by a factor of 2. An international ...

The experiment's third and final result, based on the last three years of data, is in perfect agreement with previous results, further solidifying the experimental world average. Scientists working on ...

A new measurement of a fundamental particle called the W boson appears to defy the standard model of particle physics, our current understanding of how the basic building blocks of the universe ...