An experiment located at the DESY laboratory. ZEUS uses the electron-proton collider called HERA. For more information, see: http://www-zeus.desy.de/.

A very weak interaction that is independent of the electric charge of a particle. Particles can exchange energy through this mechanism, but other characteristics of the particles remain unchanged. This force is mediated by the Z-boson.

(Weakly Interacting Massive Particle): These as yet undiscovered particles are a leading candidate for dark matter.

A proposed Cherenkov detector experiment to search for proton decay, and neutrino oscillations.

A 2 TeV proton on anti-proton collider that operates at Fermilab in Batavia, Illinois. The top quark was discovered using this accelerator.

The strength of an interaction involving three particles. In the case where all three particles are identical, it is known as the trilinear self-coupling.

1012 electron volts

When a charged particle is accelerated, it emits light known as synchrotron radiation. This radiation can be used to probe the structure of materials and biological molecules.

A proposal for a next-generation linear collider made by an international collaboration based at DESY. For further information, see: http://tesla.desy.de/.

When supersymmetry is imposed on string theory, it becomes, superstring theory. The fundamental constituents of this theory are known as superstrings.