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

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

$I^G(J^{PC})$ = $0^+(0^{+ +})$ 
The assignment $\mathit J{}^{P} = 0+$ is preferred over ${}^{}2{}^{+}$ by 2.5 sigma. Observed by CHILIKIN 2017 using full amplitude analysis of the process ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit D}}{{\overline{\mathit D}}}$ , where ${{\mathit D}}$ = ${{\mathit D}^{0}}$ , ${{\mathit D}^{+}}$ . Not seen by AAIJ 2020AI in the decay ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit D}^{+}}{{\mathit D}^{-}}{{\mathit K}^{+}}$ .
${{\mathit \chi}_{{c0}}{(3860)}}$ MASS   $3862 {}^{+50}_{-35}$ MeV 
${{\mathit \chi}_{{c0}}{(3860)}}$ WIDTH   $201 {}^{+180}_{-110}$ MeV 
$\Gamma_{1}$ ${{\mathit D}^{0}}{{\overline{\mathit D}}^{0}}$   seen 501
$\Gamma_{2}$ ${{\mathit D}^{+}}{{\mathit D}^{-}}$   seen 483