top quark


Also found in: Thesaurus, Encyclopedia, Wikipedia.
Related to top quark: bottom quark

top quark

n. Abbr. t
The flavor of quark that has a charge of + 2/3 , has a mass about 340,000 times that of an electron, and belongs to the third generation of elementary fermions. Also called truth quark.

top′ quark`


n.
a hypothetical quark postulated to have electric charge ? times the electron's charge and the heaviest mass of all quarks.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.top quark - a hypothetical quark with a charge of +2/3 and a mass more than 100,000 times that of an electron
quark - (physics) hypothetical truly fundamental particle in mesons and baryons; there are supposed to be six flavors of quarks (and their antiquarks), which come in pairs; each has an electric charge of +2/3 or -1/3; "quarks have not been observed directly but theoretical predictions based on their existence have been confirmed experimentally"
References in periodicals archive ?
The second part of the book details the history of the experiments leading to the discovery of the top quark, while the third part of the book describes the significance of the anomalous effects found in the data and the controversies they generated.
In 1992 I predicted a top quark mass of about 160 GeV, a b' quark mass of 65-80 GeV, and a t' quark at a whopping 2600 GeV.
Scientists from the four experiments involved-ATLAS, CDF, CMS and DZero-announced their joint findings on the mass of the top quark today at the Rencontres de Moriond international physics conference in Italy.
10) New accelerators were built aiming to search for the top quark as one of their major research goals.
Fermilab collider experiments discover rare single top quark
At that instant of creation a series of decisions were made: the fine-structure constant was set to 1/137; the top quark was granted a mass 344,000 times greater than the electron; and the cosmological constant was set to a not-quite-zero value that allowed the universe to expand at just the right rate for us to exist.
Among the topics are four mistaken theses about evidence and how to correct them, highly probably versus highly probed hypotheses, agency and objectivity in the search for the top quark, and introspective evidence in psychology.
Since decay into the top quark channel is forbidden by energy conservation, one would expect [SIGMA]|[V.
I argued that the genius of the physics community would find a cheaper way to float the top quark in electric and magnetic fields long enough to take its picture.
Although all quarks have a charge that is either one-third or two-thirds an electron's, only the top quark is as heavy as the 1966 prediction.
Naturalness of the recently discovered Higgs boson suggests that new phenomena should appear at the tera-electronvolt (TeV) scale, and will be accompanied by modifications to the dynamics of the heaviest elementary particle known: the top quark.