Article
Article
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Top quark
Article By:
Barnes, Ted Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee.
Last reviewed:2002
DOI:https://doi.org/10.1036/1097-8542.YB020755
As the result of a half century of study of elementary particles, physicists today believe that all matter and energy at currently accessible energy scales consists of a small set of fundamental particles whose interactions are described by the relatively simple rules of a quantum field theory. The list of these particles and the rules for their basic interactions constitute what is now known as the standard model. At present, gravity is the only experimentally known force that does not have a place in this model.
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