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 ...

LOS ALAMOS, N.M., February 24, 2021--A complex high-energy nuclear physics experiment, aiming to measure the contributions of antiquarks to the structure of the proton and neutron, has produced ...

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 ...

The proton’s antimatter is out of whack. An imbalance between two types of antiparticles that seethe within the proton is even wonkier than previously thought, a new measurement indicates. Protons are ...

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 ...

A basic characteristic of elementary particles, spin is used daily in certain imaging techniques; yet, previous studies of the mechanics behind proton spin did not add up. An experiment at the ...

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 ...

Two independent groups of theorists have predicted the existence of a stable “tetraquark” containing two heavy (bottom) quarks and two light antiquarks. They say that the particle could be detected in ...

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 ...

Physicists at CERN have discovered an exotic new particle that’s quite charming. Known as T cc +, the particle belongs to a rare class called tetraquarks, and its unusual composition makes it the ...

Researchers from the LHCb experiment at CERN recently presented a new discovery at the European Physical Society Conference on High Energy Physics. The team discovered a new particle they labeled as ...