| 释义 |
leptoquark, n. Particle Physics.|ˈlɛptəʊkwɑːk|
[f. lepton n.2 + quark n.]
Any of several hypothetical subatomic particles supposed to have some lepton-like and some quark-like properties.
1974Greenberg & Nelson in Physical Rev. D. X. 2568/2 We suggest that the word ‘quark’ be reserved for a real or fictitious fundamental field or particle for hadron physics, and suggest the word ‘leptoquark’ as the leptonic analog of quark. 1978Nature 5 Jan. 22/2 Form factors arising from a composite nature (a pair of quarks, heavy leptons, leptoquarks?) or a hidden strong interaction of W{pm} could save the day. 1979Ibid. 19 Apr. 688/1 An outcome of such a unification is that in addition to the photon and the coloured gluons of QED and QCD, there will exist a new ultraweak force whose quanta carry and couple both to electrical and to colour charge. These quanta have been called ‘leptoquarks’. 1982Sci. Amer. Apr. 95/1 To account for such a disintegration novel particles called leptoquarks are introduced to change quarks..into leptons... The leptoquarks would be extremely heavy, perhaps 1014 times as heavy as the proton. 1992Ibid. Aug. 15/1 The accelerator will truly deserve a place on Mount Olympus if it produces an exotic particle known as a leptoquark. |