| 释义 |
top quark
top quarkn. 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. Thesaurus| Noun | 1. | top quark - a hypothetical quark with a charge of +2/3 and a mass more than 100,000 times that of an electrontruth quarkquark - (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" |
top quark
top quark[′täp ‚kwärk] (particle physics) A hypothetical quark that is postulated to have a mass of approximately 30-50 GeV, electric charge of +⅔, baryon number of ⅓, zero isotopic spin, strangeness, and charm, and a new quantum number associated with it. Also known as t quark; truth quark. Symbolized t. top quark
Related to top quark: bottom quarkSynonyms for top quarknoun a hypothetical quark with a charge of +2/3 and a mass more than 100,000 times that of an electronSynonymsRelated Words |