axion

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ax·i·on

 (ăk′sē-ŏn′)
n.
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)
n
(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]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Lescheos says that Axion was the son of Priam and was slain by Eurypylus, the son of Euaemon.
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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
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

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