Protons and neutrons—the building blocks of matter—belong to a huge class of particles called hadrons. Hadrons are composite ...

What if you could take a proton, keep its basic three-part structure, and then swap in heavier building blocks? Physicists working with the Large Hadron Collider say they have now observed a rare ...

The new CMS study examined collisions between oxygen nuclei, which are much smaller than lead nuclei. Oxygen contains just 16 ...

If you could take an apple and break it into smaller and smaller parts, you would find molecules, then atoms, followed by subatomic particles like protons and the quarks and gluons that make them up.

Our best model of the cosmos has a glaring mathematical problem, but we may have found an answer.

Particles of light cannot be divided into smaller particles, but if you try to snip off the end of one, instead of shortening it multiplies ...

Physicists searching for a better understanding of quantum gravity stumbled upon something unexpected: the defining ...

Physicists may have uncovered a surprising new clue that string theory—the idea that the universe is built from unimaginably tiny vibrating strings—could be more than just a mathematical fantasy.

If you could take an apple and break it into smaller and smaller parts, you would find molecules, then atoms, followed by subatomic particles like ...

Quantum field theory says true nothingness doesn’t exist; even a vacuum teems with energy fields that help create matter and ...

According to quantum field theory—which is thought to be the most successful theory in all of physics for its ability to ...

Mystery no more Artist’s conception of the magnetic moment of the muon – a sub-atomic particle similar to, but heavier than, ...