Observations of extremely rare subatomic particle actions have allowed scientists to put one of the most stringent limits yet on the reigning theory of particle physics. Physicists at the world's ...

Add Yahoo as a preferred source to see more of our stories on Google. The particle, known as the Ξcc⁺ (Xi‑cc‑plus), is a new type of heavy proton-like particle containing two charm quarks and one down ...

The new baryon “Xi-cc-plus” decays into other particles almost instantly, but its existence could paint a clearer picture on ...

Imagine trying to prove that 1+1=2, but when you do the calculations, it turns out that the result is off by 0.1%. That scenario is similar to the riddle that’s facing physicists worldwide as they try ...

NPR's Ayesha Rascoe speaks to Esra Barlas Yücel, a researcher at University of Illinois at Urbana-Champaign, about Fermilab's most precise measurements of the muon particle's magnetic wobble. It's ...

Add Yahoo as a preferred source to see more of our stories on Google. Jefferson Lab’s search for smaller-than-an-atom bits of matter that nobody has spotted but that theory says exist is getting some ...

GENEVA -- One of the very pillars of physics and Einstein's theory of relativity -- that nothing can go faster than the speed of light -- was rocked Thursday by new findings from one of the world's ...

A subatomic particle known as a muon is disobeying the basic laws of physics, according to preliminary results from two separate experiments debuted on Wednesday. The Muon g-2 experiment at the ...

Peter Higgs was no good in the lab, but he never doubted that one day his theory of a powerful subatomic particle that bears his name would be proven right in practice. His surprise was that he lived ...

An underwater observatory recently detected a startlingly energetic cosmic neutrino. One possible cause involves a phenomenon ...