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| Standard Model of particle physics |
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A scalar boson is a boson whose spin equals zero.[1] A boson is a particle whose wave function is symmetric under particle exchange and therefore follows Bose–Einstein statistics. The spin–statistics theorem implies that all bosons have an integer-valued spin.[2] Scalar bosons are the subset of bosons with zero-valued spin.
The name scalar boson arises from quantum field theory, which demands that fields of spin-zero particles transform like a scalar under Lorentz transformation (i.e. are Lorentz invariant).
A pseudoscalar boson is a scalar boson that has odd parity, whereas "regular" scalar bosons have even parity.[3]
- ^ "The scalar boson". ATLAS Collaboration. March 26, 2015. Retrieved May 22, 2021.
- ^ Nave, R. "Spin classification of particles". Retrieved June 8, 2021.
- ^ Thomson, Mark (2011). "Handout 9: The Weak Interaction and V-A" (PDF). Retrieved June 6, 2021.
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