| 释义 |
axion Particle Physics.|ˈæksɪɒn|
[f. axial a. + -on1.]
A neutral pseudoscalar boson with very small mass that is the quantum of a field postulated as accounting for the fact that charge-parity symmetry is rarely broken.
1978S. Weinberg in Physical Rev. Lett. XL. 223/2 A very light pseudoscalar pseudo-Goldstone boson, the ‘axion’. 1978F. Wilczek in Ibid. 280/2 A special kind of Higgs boson (which we are calling the axion) with zero bare mass. 1978Nature 6 July 22/1 Axions, new elementary particles of mass less than or comparable to electrons, might have escaped previous detection because they would be semi-weakly interacting, neutral and pseudoscalar, and hence somewhat elusive. 1984Ibid. 11 Oct. 517/2 If axions comprise the dark halo of our Galaxy, laboratory experiments have recently been proposed that could detect them. 1985Sci. Amer. May 61/2 The axion would interact only rarely with ordinary matter; although light, axions would be abundant enough to account for the missing mass. |