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

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

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Last updated on Sunday December 30, 2007 at 06:05:56 PST (GMT -0800)

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This article is licensed under the GNU Free Documentation License.

Last updated on Sunday December 30, 2007 at 06:05:56 PST (GMT -0800)

View this article at Wikipedia.org - Edit this article at Wikipedia.org - Donate to the Wikimedia Foundation

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