Standard Model of particle physics
Up quarkCharm quarkTop quarkGluonHiggs bosonDown quarkStrange quarkBottom quarkPhotonElectronMuonTau (particle)Z bosonElectron neutrinoMuon neutrinoTau neutrinoW bosonStandard ModelFermionBosonQuarkLeptonScalar bosonGauge bosonVector boson
Elementary particles of the Standard Model
Background
Particle physics
Standard Model
Quantum field theory
Gauge theory
Spontaneous symmetry breaking
Higgs mechanism
Constituents
Electroweak interaction
Quantum chromodynamics
CKM matrix
Standard Model mathematics
Limitations
Strong CP problem
Hierarchy problem
Neutrino oscillations
Physics beyond the Standard Model
Scientists

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]

Examples

Scalar

Pseudoscalar

See also

References

  1. ^ a b "The scalar boson". ATLAS Collaboration. March 26, 2015. Retrieved May 22, 2021.
  2. ^ Nave, R. "Spin classification of particles". Retrieved June 8, 2021.
  3. ^ Thomson, Mark (2011). "Handout 9: The Weak Interaction and V-A" (PDF). Retrieved June 6, 2021.
  4. ^ "New results indicate that particle discovered at CERN is a Higgs boson" (Press release). 14 March 2013. Retrieved 22 May 2021.
  5. ^ "The Nobel Prize in Physics for 2013" (Press release). Nobel Media AB. 2013. Retrieved 22 May 2021.
  6. ^ Qaim, Syed M.; Spahn, Ingo; Scholten, Bernhard; Neumaier, Bernd (8 June 2016). "Uses of alpha particles, especially in nuclear reaction studies and medical radionuclide production". Radiochimica Acta. 104 (9): 601. doi:10.1515/ract-2015-2566. S2CID 56100709. Retrieved 22 May 2021.
  7. ^ Peskin, Michael E.; Schroeder, Daniel V. (1995). An Introduction to Quantum Field Theory. Westview Press. ISBN 978-0-201-50397-5.
  8. ^ Nave, R. "Hadrons, baryons, mesons". Retrieved May 23, 2021.
Categories