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${\mathit {\mathit c}}$ ${\mathit {\overline{\mathit c}}}$ MESONS (including possibly non- ${\mathit {\mathit q}}$ ${\mathit {\overline{\mathit q}}}$ states)

Charmonium System
Branching Ratios of ${{\mathit \psi}{(2S)}}$ and ${{\mathit \chi}}_{c0,1,2}$
Spectroscopy of Mesons Containing Two Heavy Quarks

${{\mathit \eta}_{{c}}{(1S)}}$

${{\mathit J / \psi}{(1S)}}$

${{\mathit \chi}_{{c0}}{(1P)}}$

${{\mathit \chi}_{{c1}}{(1P)}}$

${{\mathit h}_{{c}}{(1P)}}$

${{\mathit \chi}_{{c2}}{(1P)}}$

${{\mathit \eta}_{{c}}{(2S)}}$

${{\mathit \psi}{(2S)}}$

${{\mathit \psi}{(3770)}}$

${{\mathit \psi}_{{2}}{(3823)}}$
was ${{\mathit \psi}{(3823)}}$, ${{\mathit X}{(3823)}}$

${{\mathit \psi}_{{3}}{(3842)}}$

${{\mathit \chi}_{{c0}}{(3860)}}$

${{\mathit \chi}_{{c1}}{(3872)}}$
aka ${{\mathit X}{(3872)}}$

${{\mathit \chi}_{{c0}}{(3915)}}$
was ${{\mathit X}{(3915)}}$

${{\mathit \chi}_{{c2}}{(3930)}}$

${{\mathit X}{(3940)}}$

${{\mathit \psi}{(4040)}}$

${{\mathit \chi}_{{c1}}{(4140)}}$
was ${{\mathit X}{(4140)}}$

${{\mathit \psi}{(4160)}}$

${{\mathit X}{(4160)}}$

${{\mathit \psi}{(4230)}}$
aka ${{\mathit Y}{(4230)}}$; was ${{\mathit \psi}{(4260)}}$

${{\mathit \chi}_{{c1}}{(4274)}}$
was ${{\mathit X}{(4274)}}$

${{\mathit X}{(4350)}}$

${{\mathit \psi}{(4360)}}$
aka ${{\mathit Y}{(4360)}}$; was ${{\mathit X}{(4360)}}$

${{\mathit \psi}{(4415)}}$

${{\mathit \chi}_{{c0}}{(4500)}}$
was ${{\mathit X}{(4500)}}$

${{\mathit X}{(4630)}}$

${{\mathit \psi}{(4660)}}$
aka ${{\mathit Y}{(4660)}}$; was ${{\mathit X}{(4660)}}$

${{\mathit \chi}_{{c1}}{(4685)}}$

${{\mathit \chi}_{{c0}}{(4700)}}$
was ${{\mathit X}{(4700)}}$


•	Indicates established particles.

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