A pair of Pennsylvania physicists has found hints of an additional force of nature lurking in data from physics experiments, most of which were completed a few years ago.
If the hints withstand further scrutiny—a big “if,” they and other physicists say—the researchers will have achieved something extraordinary and long sought. They will have identified a feature of the elementary-particle realm not predicted by the reigning theory of particle physics, the so-called standard model.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.