Scalar is a concept meaning relating to a directionless magnitude (such as mass or speed) that is completely specified by its magnitude. Bosons which are quantums of any scalar unit are scalar bosons.
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| Elementary | |
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| Composite | | Hadrons | | Baryons |
- Nucleon
- Delta baryon
- Lambda baryon
- Sigma baryon
- Xi baryon
- Omega baryon
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| Mesons |
- Pion
- Rho meson
- Eta and eta prime mesons
- Bottom eta meson
- Phi meson
- J/psi meson
- Omega meson
- Upsilon meson
- Kaon
- B meson
- D meson
- Quarkonium
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| Exotic hadrons |
- Tetraquark (Double-charm tetraquark)
- Pentaquark
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| Others | |
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| Hypothetical | | Baryons | |
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| Mesons |
- Glueball
- Theta meson
- T meson
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| | Others |
- Mesonic molecule
- Pomeron
- Diquark
- R-hadron
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| Quasiparticles | |
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| Lists |
- Baryons
- Mesons
- Particles
- Quasiparticles
- Timeline of particle discoveries
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| Related | |
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