axionn.

/ˈaksɪɒn/

Etymology: < axi- (in axial adj.) + -on suffix¹.

Particle Physics.

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.

ΘΚΠ

the world > matter > physics > atomic physics > particle physics > [noun] > neutral pseudoscalar boson

axion1978

1978 S. Weinberg in Physical Rev. Lett. 40 223/2 A very light pseudoscalar pseudo-Goldstone boson, the ‘axion’.

1978 F. Wilczek in Physical Rev. Lett. 40 280/2 A special kind of Higgs boson (which we are calling the axion) with zero bare mass.

1978 Nature 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.

1984 Nature 11 Oct. 517/2 If axions comprise the dark halo of our Galaxy, laboratory experiments have recently been proposed that could detect them.

1985 Sci. 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.

This entry has not yet been fully updated (first published 1989; most recently modified version published online March 2018).

单词	axion
释义	axionn. /ˈaksɪɒn/ Etymology: < axi- (in axial adj.) + -on suffix¹. Particle Physics. 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. ΘΚΠ the world > matter > physics > atomic physics > particle physics > [noun] > neutral pseudoscalar boson axion1978 1978 S. Weinberg in Physical Rev. Lett. 40 223/2 A very light pseudoscalar pseudo-Goldstone boson, the ‘axion’. 1978 F. Wilczek in Physical Rev. Lett. 40 280/2 A special kind of Higgs boson (which we are calling the axion) with zero bare mass. 1978 Nature 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. 1984 Nature 11 Oct. 517/2 If axions comprise the dark halo of our Galaxy, laboratory experiments have recently been proposed that could detect them. 1985 Sci. 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. This entry has not yet been fully updated (first published 1989; most recently modified version published online March 2018). < n.1978
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