It's a twenty-year-old question: how much do the constituent quarks and gluons contribute to the spin of a nucleon? New results from the COMPASS experiment add to the picture. Naively, the proton ...

A global analysis of experimental data and lattice Quantum Chromodynamics calculations provides insight into the role of the gluons (purple squiggles) contributing to the spin of the nucleon.

Nuclear scientists have developed a new theoretical approach that offers a more precise calculation of the 3D motion of ...

I took Proton Mail for a spin and came away impressed. Here, I'll discuss specific features that make me love Proton Mail, ...

An analysis by physicists of colliding protons is tackling the mystery of where protons get their intrinsic property known as spin. Along with neutrons, protons are housed inside an atom's nucleus.

After almost a century of speculation, proposals and searches for dark matter, physicists now know that it currently ...

Protons and neutrons–known collectively as nucleons–are both the building blocks of matter, but one of these particles has ...

When a star dies in a supernova, one possible outcome is for the remains to become a neutron star. Inside a neutron star, the ...

Recent advancements at the Thomas Jefferson National Accelerator Facility have enabled physicists to explore the internal ...