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- Top_quark abstract "The top quark, also known as the t quark (symbol: t) or truth quark, is an elementary particle and a fundamental constituent of matter. 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, and is the most massive of all observed elementary particles. It has a mass of 173.34 ± 0.27 (stat) ± 0.71 (syst) 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 almost exclusively to a W boson and a bottom quark, but it can decay also into a strange quark, and on the rarest of occasions, into a down quark. The Standard Model predicts its mean lifetime to be roughly 5×10−25 s. This is about 20 times shorter than 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 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.
- Top_quark wikiPageExternalLink 1999.
- Top_quark wikiPageExternalLink top.
- Top_quark wikiPageExternalLink SciAmTop.pdf.
- Top_quark wikiPageExternalLink top.html.
- Top_quark wikiPageExternalLink top_public.html.
- Top_quark wikiPageExternalLink hm_quark.htm.
- Top_quark wikiPageExternalLink top_quark.html.
- Top_quark wikiPageExternalLink ?pid=1000085.
- Top_quark wikiPageExternalLink theme3.py?level=2&index1=234702.
- Top_quark wikiPageID "241029".
- Top_quark wikiPageRevisionID "600365648".
- Top_quark antiparticle "Top antiquark".
- Top_quark caption "A collision event involving top quarks".
- Top_quark colorCharge "Yes".
- Top_quark composition Elementary_particle.
- Top_quark discovered "CDF and DØ collaborations".
- Top_quark electricCharge "+ e".
- Top_quark generation "Third".
- Top_quark group Quark.
- Top_quark hasPhotoCollection Top_quark.
- Top_quark interaction Electromagnetism.
- Top_quark interaction Gravitation.
- Top_quark interaction Strong_interaction.
- Top_quark interaction Weak_interaction.
- Top_quark mass "173.34".
- Top_quark name "Top quark".
- Top_quark statistics Fermion.
- Top_quark theorized "Makoto Kobayashi and Toshihide Maskawa".
- Top_quark topness "1".
- Top_quark weakIsospin "0".
- Top_quark subject Category:Quarks.
- Top_quark subject Category:Standard_Model.
- Top_quark comment "The top quark, also known as the t quark (symbol: t) or truth quark, is an elementary particle and a fundamental constituent of matter. 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, and is the most massive of all observed elementary particles.".
- Top_quark label "Kwark t".
- Top_quark label "Quark Top".
- Top_quark label "Quark cima".
- Top_quark label "Quark top".
- Top_quark label "Quark top".
- Top_quark label "T-кварк".
- Top_quark label "Top quark".
- Top_quark label "Top-quark".
- Top_quark label "كوارك قمي".
- Top_quark label "トップクォーク".
- Top_quark label "頂夸克".
- Top_quark sameAs Kvark_t.
- Top_quark sameAs Quark_cima.
- Top_quark sameAs Tontor_quark.
- Top_quark sameAs Quark_top.
- Top_quark sameAs Quark_top.
- Top_quark sameAs トップクォーク.
- Top_quark sameAs 꼭대기_쿼크.
- Top_quark sameAs Top-quark.
- Top_quark sameAs Kwark_t.
- Top_quark sameAs Quark_Top.
- Top_quark sameAs m.01jzs8.
- Top_quark sameAs Q6778.
- Top_quark sameAs Q6778.
- Top_quark wasDerivedFrom Top_quark?oldid=600365648.
- Top_quark depiction Top_antitop_quark_event.svg.
- Top_quark isPrimaryTopicOf Top_quark.