axion

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ax·i·on

(ăk′sē-ŏn′)

A hypothetical boson having no charge or spin and small mass, proposed to explain the existence of certain symmetries of the strong nuclear force.

[axi(al) + -on.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

axion

(ˈæksɪˌon)

(Atomic Physics) physics a hypothetical neutral elementary particle postulated to account for certain conservation laws in the strong interaction

[C20: from axi(om) + -on]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ax•i•on

(ˈæk siˌɒn)

n.

an elementary particle having no charge, zero spin, and small mass, postulated to exist by some forms of quantum chromodynamics.

[1978; axi(al) + -on¹]

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References in classic literature ?

Lescheos says that Axion was the son of Priam and was slain by Eurypylus, the son of Euaemon.

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Numerous hypothetical particles, such as dark photons and axions, have been proposed as the constituent of dark matter.

Dark Matter Particle Search Narrowed Further

These solutions, the pseudo-NG bosons which couple to the gluon fields and break the symmetry, are known as "axions" [5, 6] and have been posited as possible candidates underlying the dark matter (DM) present throughout the universe.

An Experiment and Detection Scheme for Cavity-Based Light Cold Dark Matter Particle Searches

That may signal the presence of hypothetical particles called axions. Such particles have been proposed to be dark matter, the unknown substance that makes up most of the universe's mass.

Cooling stars hint at existence of dark matter particles

Washington, June 19 ( ANI ): Scientists at the Vienna University of Technology have presented a method to prove the existence of hypothetical "axions".

New particles could be detected as they accumulate around black holes

(http://www.ibtimes.com/what-dark-matter-made-scientists-estimate-mass-prime-candidate-axions-2440949) Axions are hypothetical particles that interact very weakly with ordinary matter and could explain dark matter, which makes up about 85 percent of the universe's total mass.

CERN's CAST Experiment Didn't Find Solar Axions

In their research into other applications for topological insulators, Zhang and his colleagues discovered that the electromagnetic behavior of topological insulators is described by the very same mathematical equations that describe the behavior of axions.

Desktop experiments may help scientists 'see' dark matter

The team posited that the polarization shift could have resulted from the magnetic field converting some of the beam's photons into axions, which would then fly off undetected.

Axion gone: new tests find no sign of anomalous particle

Particle physicists looking for dark matter mostly fall into one of the two camps - one that believes that it is made up of Weakly Interacting Massive Particles (WIMPs), which are heavy particles that interact with normal matter only through gravity and the weak nuclear force; and the other that thinks axions - a class of extremely light particles whose existence is predicted by an extension of quantum chromodynamics, which is a theory that lies within the ambit of the Standard Model of particle physics - are dark matter's constituent particles.