A hadron made from three quarks. They may also contain additional quark-antiquark pairs. The particle stream produced by an accelerator usually clustered in bunches. The theory of an expanding universe that begins as an infinitely dense and hot medium. The initial instant is called the Big Bang.
All particles are either fermions or bosons.
The major European international accelerator laboratory located near Geneva, Switzerland. A quantum number carried by a particle. Determines whether the particle can participate in an interaction process. An accelerator in which two beams traveling in opposite directions are steered together to provide high-energy collisions between the particles in one beam and those in the other. The quantum number that determines participation in strong interactions.