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| {{Refimprove|date=December 2009}}
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| A '''scalar boson''' is a [[boson]] whose [[spin (physics)|spin]] equals zero. ''Boson'' means that it has an integer-valued [[Spin (physics)|spin]]; the ''scalar'' fixes this value to 0.
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| The name "scalar boson" arises from [[quantum field theory]]. It refers to the particular transformation properties under [[Lorentz transformation]].
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| == Examples ==
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| * Various known composite particles are scalar bosons, e.g. the [[alpha particle]] and the [[pi meson]]. Among the scalar mesons, one distinguishes between the [[Scalar meson|scalar]] and [[pseudoscalar meson]]s, which refers to their transformation property under [[Parity (physics)|parity]].
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| * The only fundamental scalar boson in the [[standard model]] of [[elementary particle physics]] is the [[Higgs boson]], tentatively confirmed to exist on 14 March 2013 at [[Large Hadron Collider]]. This confirmation awarded a [[Nobel Prize in physics]] to [[Peter Higgs]] and [[François Englert]].
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| * One very popular quantum field theory, which uses scalar bosonic fields and is introduced in many introductory books to quantum field theories<ref>
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| {{cite book
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| | author=Michael E. Peskin and Daniel V. Schroeder
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| | title=An Introduction to Quantum Field Theory
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| | publisher=Westview Press
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| | year=1995
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| | isbn = 0-201-50397-2}}</ref> for pedagogical reasons, is the so-called [[Quartic interaction|<math> \Phi^4</math>-theory]]. It usually serves as a [[toy model]] to introduce the basic concepts of the field.
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| ==See also==
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| *[[Scalar meson]]
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| *[[Scalar field theory]]
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| *[[Vector boson]]
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| *[[Higgs Boson]]
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| ==References==
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| {{reflist}}
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| {{Particles}}
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| {{DEFAULTSORT:Scalar Boson}}
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| [[Category:Bosons]]
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| [[Category:Mesons]]
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| [[Category:Quantum field theory]]
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| {{Particle-stub}}
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Revision as of 15:11, 20 February 2014
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