charmonium Particle Physics.
(tʃɑːˈməʊnɪəm)
[f. charm n.1 + -onium 2.]
A charmed quark and a charmed antiquark bound to one another.
| 1975 Physical Rev. Lett. XXXIV. 44/1 Another way of seeing that a Coulomb-like picture is not completely correct is to estimate the size of a ‘charmonium’ atom. 1980 Sci. News 9 Feb. 85 How the charmonium states change into one another, resemble one another and differ from one another is extremely important for an understanding of the characteristic called charm and of the chromodynamic force that holds these structures together. |