Carnegie Mellon University's Professor Curtis Meyer and his research colleagues explore an uncharted world inside protons and ...

Scientists believe such a substance of free quarks and gluons, the building blocks of protons and neutrons, permeated the universe a fraction of a second after the Big Bang. A new analysis of data ...

Mesons, which are composite particles made of quarks and antiquarks, exhibit unique properties when subjected to strong magnetic fields, such as those generated in heavy-ion collisions.

Protons and other subatomic particles that are subject to the strong nuclear force have a complex structure that involves even more fundamental constituents called quarks and gluons. These quarks ...

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During a deeply inelastic collision with a proton, a relativistic electron (highlighted in blue) can emit a high-energy photon (purple here) that penetrates interior of the proton, where it ‘sees’ ...

Sheldon Glashow recalls the events surrounding a remarkable decade of model building and discovery between 1964 and 1974.