Particle physics

Particle physics

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Particle physics

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.

galactic halo

Physics; Particle physics

the region of dark matter that surrounds the visible portion of a galaxy

gamma rays

Physics; Particle physics

photons of high energy. The most energetic forms of light are known as gamma rays.

gauge bosons

Physics; Particle physics

The particles that carrry the forces of the Standard Model: electromagnetism (photons), the weak force (W and Z-bosons), and the strong force (gluons).