top quark

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  • noun

Synonyms for top quark

a hypothetical quark with a charge of +2/3 and a mass more than 100,000 times that of an electron


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References in periodicals archive ?
'The top quark is an object that gives rise to these funny, three-pronged sprays of radiation, which are very dissimilar from typical sprays of one or two prongs,' Thaler says.
The decay to a pair of gluons proceeds through a preferably top quark loop and stands as the second channel.
Together the four experiments pooled their data analysis power to arrive at a new world's best value for the mass of the top quark of 173.34 plus/minus 0.76 GeV/c2.
The top quark was finally discovered in 1995 at the proton-anti-proton collider TEVATRON, (17) at FNAL in the U.S.A., whose center of mass energy reached 2 TeV.
The discovery of the single top quark confirms important parameters of particle physics.
He claimed that $12 billion was a cheap price to discover the sixth and elusive "top quark" subatomic particle.
The function X([x.sub.t]) denotes the top quark loop function, which is given by
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.
Also discussed are weak polarized electron scattering, the cooling of high-energy hadron beams, the status and implications of beyond the Standard Model searches at the LHC (Large Hadron Collider) proton-proton collider, the measurement of neutrino properties with atmospheric neutrinos, the properties of the top quark, and hard-scattering results in heavy-ion collisions at the LHC.
Relying on these arguments and on the theoretical conclusion stating that the [W.sup.[+ or -]] must be composite objects, it is concluded that the [W.sup.[+ or -]] particles contain one top quark. Thus, the [W.sup.+] is a superposition of three meson families: t[bar.d], t[bar.s] and t[bar.d].
The new W mass measurement and the latest precision determination of the mass of the top quark from Fermilab triangulate the location of the Higgs particle and restrict its mass to less than 152 GeV/c2 .
SSC could also be the first to nab a top quark, if Fermilab's effort falls short.