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Bradyon

From Simple English Wikipedia, the free encyclopedia

Bradyons, also known as tardyons or ittyons, are very small particles that travel below the speed of light, as opposed to hypothetical tachyons (which travel above the speed of light). All known subatomic particles which have mass are bradyons.

Particles in physics

Quarks	Up (quark antiquark) Down (quark antiquark) Charm (quark antiquark) Strange (quark antiquark) Top (quark antiquark) Bottom (quark antiquark)
Leptons	Electron Positron Muon Antimuon Tau Antitau Electron neutrino Electron antineutrino Muon neutrino Muon antineutrino Tau neutrino Tau antineutrino

Gauge	Photon Gluon W and Z bosons
Scalar	Higgs boson

Faddeev–Popov ghosts

Gauginos	Gluino Gravitino Photino
Others	Axino Chargino Higgsino Neutralino Sfermion (Stop squark)

Others

Baryons	Nucleon Proton Antiproton Neutron Antineutron Delta baryon Lambda baryon Sigma baryon Xi baryon Omega baryon
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
Exotic hadrons	Tetraquark (Double-charm tetraquark) Pentaquark

Others

Atomic nuclei
Atoms
Exotic atoms
- Positronium
- Muonium
- Tauonium
- Onia
- Pionium
- Protonium
Superatoms
Molecules

Baryons	Hexaquark Heptaquark Skyrmion
Mesons	Glueball Theta meson T meson

Others

Lists

Related

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Subatomic particles

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