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Scalar boson

A scalar boson is a boson with spin equal to zero. Some mesons are scalar bosons.


The name scalar boson arises from quantum field theory. The component of such a particle's spin along any axis will always be measured to have only one possible value: 0. The space of spin states therefore has one degree of freedom, the same as the number of components of a mathematical scalar. If the scalar boson is taken to be the quantum of a field, the field is a scalar field, hence the name.

Pseudoscalar bosons

Most mesons, such as pion, are pseudoscalar bosons.

See also

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Scalar_boson". A list of authors is available in Wikipedia.
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