Add Yahoo as a preferred source to see more of our stories on Google. Imagine a particle so elusive, so rare, that it's difficult even to catch a glimpse of it. That's the challenge researchers face ...

The NA62 Collaboration has dramatically reduced the uncertainty in its measurement of an extremely rare particle decay, in results just presented at the 2026 La Thuile conference. The study of rare ...

A University of Melbourne researcher has placed the strongest constraints yet on certain rare decays of subatomic particles, narrowing the window for where new "hidden" particles could be lurking. In ...