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standard model
(redirected from Particle physics standard model)

   Also found in: Wikipedia, Hutchinson 0.09 sec.
Standard Model, in physics: see elementary particles elementary particles, the most basic physical constituents of the universe.

Basic Constituents of Matter



Molecules are built up from the atom , which is the basic unit of any chemical element .
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standard model

In physics, the combination of two theories of particle physics into a single framework to describe all interactions of subatomic particles except those due to gravity (see gravitation). The two theories, the electroweak theory and the theory of quantum chromodynamics, describe the interactions between particles in terms of the exchange of intermediary particles. The model has proved highly accurate in predicting certain interactions, but it does not explain all aspects of subatomic particles. For example, it cannot say how many particles there should be or what their masses are. The search goes on for a more complete theory, and in particular a unified field theory describing the strong, weak, and electromagnetic forces.


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