Axion ○꠹｜appendage｜___｜20260628155835-01-•

A	B
Interactions	Gravitational, electromagnetic, strong, weak
Status	Hypothetical
Symbol	A${}^0$, a, θ
Theorized	1978, Wilczek and Weinberg
Mass	10${}^{-7}$ to 1 eV/c${}^2$ 1
Electric charge	0 e
Spin	0 ħ

Axion

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Footnotes

1. Peccei, R. D. (2008). “The Strong CP Problem and Axions”. In Kuster, Markus; Raffelt, Georg; Beltrán, Berta (eds.). Axions: Theory, Cosmology, and Experimental Searches. Lecture Notes in Physics. Vol. 741. pp. 3–17. arXiv:hep-ph/0607268. doi:10.1007/978-3-540-73518-2_1. ISBN 978-3-540-73517-5. S2CID 119482294. ↩