February 2025

A Re-Examination of a Particle Discovered in 2015 has Scientists Debating its True Identity. Syracuse professor Tomasz Skwarnicki has been a physicist for 30 years. He and his  collaborators have measured rare processes and even discovered new particles. But he says their recent re-examination of a particle they discovered in 2015 was one the few analyses that made him exclaim, “Oh my gosh.” Skwarnicki has...