Two independent studies have illuminated unexpected substructures in the fundamental components of all matter. Preliminary results using a novel tagging method could explain the origin of the ...

If you buy something using links in our stories, we may earn a commission. Learn more. It often goes unmentioned that protons, the positively charged matter particles at the center of atoms, are part ...

The most precise calculations yet of how two quarks locked in a bound state annihilate have been achieved using lattice quantum chromodynamics — and signal a curious discrepancy. Figure 1: CP ...

At a fundamental level, reality is determined by only two properties of our Universe: the quanta that make up everything that exists and the interactions that take place between them. While the rules ...

UPTON, NY--New data from the STAR experiment at the a target="_blank" href="https://www.bnl.gov/rhic/">Relativistic Heavy Ion Collider (RHIC) add detail--and ...

The first tetraquark comprising all charm quarks and antiquarks may have been spotted by physicists working on the LHCb experiment on the Large Hadron Collider (LHC) at CERN. The exotic hadron was ...

Twenty years ago, physicists set out to investigate a mysterious asymmetry in the proton’s interior. Their results, published today, show how antimatter helps stabilize every atom’s core. It often ...

Like a quantum version of a whirling top, protons have angular momentum, known as spin. But the source of the subatomic particles’ spin has confounded physicists. Now scientists have confirmed that ...

New data from the STAR experiment at the Relativistic Heavy Ion Collider (RHIC) add detail -- and complexity -- to an intriguing puzzle that scientists have been seeking to solve: how the building ...

Harry Cliff is a member of the LHCb Collaboration, though he was not directly involved in the work described in this article. Everything you see around you is made up of elementary particles called ...