Learn more about Particle/High Energy Physics

The spin direction of protons was reversed, for the first time, using a nine-magnet device, potentially helping tease out details about protons.

Since the 1980s, scientists have known that quark and antiquark spins within a proton account for, at best, a quarter of the overall proton spin.

A precision measurement of the proton’s weak charge narrows the search for new physics.

A re-analysis of data suggests that proton-neutron pairs in a nucleus may explain why their quarks have lower average momenta than predicted.

Inside every proton in every atom in the universe is a pressure cooker environment that surpasses the atom-crushing heart of a neutron star. That

Storing extremely slow neutrons in a novel trap enables precise measurement of a basic property of particle physics.

Scientists observe and control molecular and atomic dynamics at the fastest timescales to date.

Detailed 3D images show how nanoparticles change in reactions that purify contaminated water or power recyclable geochemical batteries.