Particle physics

Particle physics

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Particle physics

Fermion

Physics; Particle physics

The term for a particle with half-integer spin. Examples include the quarks and leptons of the Standard Model.

Fixed target experiment

Physics; Particle physics

An experiment in which a single energetic beam strikes a stationary target such as a block of metal. This is to be contrasted with collider experiments, in which two energetic beams collide head on.

Hadron

Physics; Particle physics

Any particle made out of quarks and/or anti-quarks. Protons, neutrons, and anti-protons are examples of hadrons.

Hadron collider

Physics; Particle physics

A machine that accelerates hadrons to high-energies in two beams, and then collides the beams head-on.

Hidden dimensions

Physics; Particle physics

Hypothetical additional dimensions of space-time, either a classical dimension in which particles can move, or a quantum dimension that converts a force particle into a matter particle and vice ...