Mu2e Experiment

In 2024, Fermilab made significant scientific progress, including advancing preparations for the Deep Underground Neutrino Experiment and conducting groundbreaking quantum research. The laboratory also continued its strong international collaborations — including involvement with the CMS experiment at CERN — and made strides in developing emerging technologies with wide applications beyond physics.

A large number of scientists are working on improving the Standard Model prediction of the value of muon g-2 using new data and new lattice calculations. By measuring and calculating this number to ultra-high precision, scientists can test whether the Standard Model is complete.

The Mu2e experiment at Fermilab will look for a never-before-seen subatomic phenomenon that, if observed, would transform our understanding of elementary particles: the direct conversion of a muon into an electron. An international collaboration of over 200 scientists is building the Mu2e precision particle detector that will hunt for new physics beyond the Standard Model.