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- Top_quark abstract "The top quark, also known as the t quark (symbol: t) or truth quark, is the most massive of all observed elementary particles. Like all quarks, the top quark is an elementary fermion with spin-1⁄2, and experiences all four fundamental interactions: gravitation, electromagnetism, weak interactions, and strong interactions. It has an electric charge of +2⁄3 e, It has a massive mass of 173.34 ± 0.27 (stat) ± 0.71 (syst)7000100000000000000♠100 GeV/c2, which is about the same mass as an atom of tungsten. The antiparticle of the top quark is the top antiquark (symbol: t, sometimes called antitop quark or simply antitop), which differs from it only in that some of its properties have equal magnitude but opposite sign.The top quark interacts primarily by the strong interaction, but can only decay through the weak force. It decays to a W boson and either a bottom quark (most frequently), a strange quark, or, on the rarest of occasions, a down quark. The Standard Model predicts its mean lifetime to be roughly 6975500000000000000♠5×10−25 s. This is about a twentieth of the timescale for strong interactions, and therefore it does not form hadrons, giving physicists a unique opportunity to study a \"bare\" quark (all other quarks hadronize, meaning that they combine with other quarks to form hadrons, and can only be observed as such). Because it is so massive, the properties of the top quark allow predictions to be made of the mass of the Higgs boson under certain extensions of the Standard Model (see Mass and coupling to the Higgs boson below). As such, it is extensively studied as a means to discriminate between competing theories.Its existence (and that of the bottom quark) was postulated in 1973 by Makoto Kobayashi and Toshihide Maskawa to explain the observed CP violations in kaon decay, and was discovered in 1995 by the CDF and DØ experiments at Fermilab. Kobayashi and Maskawa won the 2008 Nobel Prize in Physics for the prediction of the top and bottom quark, which together form the third generation of quarks.".
- Top_quark thumbnail Top_antitop_quark_event.svg?width=300.
- Top_quark wikiPageExternalLink quark.html.
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- Top_quark wikiPageExternalLink 1999.
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- Top_quark wikiPageExternalLink SciAmTop.pdf.
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- Top_quark wikiPageWikiLink Additive_inverse.
- Top_quark wikiPageWikiLink Antiparticle.
- Top_quark wikiPageWikiLink Atom.
- Top_quark wikiPageWikiLink Barn_(unit).
- Top_quark wikiPageWikiLink Bottom_quark.
- Top_quark wikiPageWikiLink Branching_fraction.
- Top_quark wikiPageWikiLink Brookhaven_National_Laboratory.
- Top_quark wikiPageWikiLink CERN.
- Top_quark wikiPageWikiLink CP_violation.
- Top_quark wikiPageWikiLink Cabibbo–Kobayashi–Maskawa_matrix.
- Top_quark wikiPageWikiLink Category:Elementary_particles.
- Top_quark wikiPageWikiLink Category:Quarks.
- Top_quark wikiPageWikiLink Category:Standard_Model.
- Top_quark wikiPageWikiLink Center-of-momentum_frame.
- Top_quark wikiPageWikiLink Charm_quark.
- Top_quark wikiPageWikiLink Collider_Detector_at_Fermilab.
- Top_quark wikiPageWikiLink Confidence_interval.
- Top_quark wikiPageWikiLink Cosmic_ray.
- Top_quark wikiPageWikiLink Cross_section_(physics).
- Top_quark wikiPageWikiLink D0_experiment.
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- Top_quark wikiPageWikiLink Doublet_state.
- Top_quark wikiPageWikiLink Down_quark.
- Top_quark wikiPageWikiLink E288_experiment.
- Top_quark wikiPageWikiLink Electric_charge.
- Top_quark wikiPageWikiLink Electromagnetism.
- Top_quark wikiPageWikiLink Elementary_charge.
- Top_quark wikiPageWikiLink Elementary_particle.
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- Top_quark wikiPageWikiLink Fermilab.
- Top_quark wikiPageWikiLink Fermion.
- Top_quark wikiPageWikiLink Fundamental_interaction.
- Top_quark wikiPageWikiLink GIM_mechanism.
- Top_quark wikiPageWikiLink Generation_(particle_physics).
- Top_quark wikiPageWikiLink Georgia_State_University.
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- Top_quark wikiPageWikiLink Gluon.
- Top_quark wikiPageWikiLink Gravity.
- Top_quark wikiPageWikiLink Hadron.
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- Top_quark wikiPageWikiLink Haim_Harari.
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- Top_quark wikiPageWikiLink Higgs_boson.
- Top_quark wikiPageWikiLink Higgs_mechanism.
- Top_quark wikiPageWikiLink HyperPhysics.
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- Top_quark wikiPageWikiLink Kaon.
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- Top_quark wikiPageWikiLink Lepton.
- Top_quark wikiPageWikiLink List_of_Nobel_laureates_in_Physics.
- Top_quark wikiPageWikiLink Luciano_Maiani.
- Top_quark wikiPageWikiLink Makoto_Kobayashi_(physicist).
- Top_quark wikiPageWikiLink Martin_Lewis_Perl.
- Top_quark wikiPageWikiLink Martinus_J._G._Veltman.
- Top_quark wikiPageWikiLink Mass.
- Top_quark wikiPageWikiLink Minimal_Supersymmetric_Standard_Model.
- Top_quark wikiPageWikiLink Nobel_Prize.
- Top_quark wikiPageWikiLink Pair_production.
- Top_quark wikiPageWikiLink Particle_accelerator.
- Top_quark wikiPageWikiLink Particle_decay.
- Top_quark wikiPageWikiLink Peskin–Takeuchi_parameter.
- Top_quark wikiPageWikiLink Photon.
- Top_quark wikiPageWikiLink Physics_beyond_the_Standard_Model.
- Top_quark wikiPageWikiLink Quantum_chromodynamics.
- Top_quark wikiPageWikiLink Quark.
- Top_quark wikiPageWikiLink Quark_model.
- Top_quark wikiPageWikiLink Renormalization_group.
- Top_quark wikiPageWikiLink SLAC_National_Accelerator_Laboratory.
- Top_quark wikiPageWikiLink Sheldon_Lee_Glashow.
- Top_quark wikiPageWikiLink Spin-½.
- Top_quark wikiPageWikiLink Spin_(physics).
- Top_quark wikiPageWikiLink Standard_Model.
- Top_quark wikiPageWikiLink Strange_quark.
- Top_quark wikiPageWikiLink Strong_interaction.
- Top_quark wikiPageWikiLink Super_Proton_Synchrotron.
- Top_quark wikiPageWikiLink Symmetry_(physics).
- Top_quark wikiPageWikiLink Tau_(particle).
- Top_quark wikiPageWikiLink Tevatron.
- Top_quark wikiPageWikiLink Top_quark_condensate.