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

INSPIRE search

${{\boldsymbol \chi}_{{c0}}{(3860)}}$ $I^G(J^{PC})$ = $0^+(0^{+ +})$

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 ${{\mathit D}}$ = ${{\mathit D}^{0}}$, ${{\mathit D}^{+}}$.

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

$3862 {}^{+50}_{-35}$ MeV

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

$201 {}^{+180}_{-110}$ MeV

Decay Modes

$\Gamma_{1}$

${{\mathit D}^{0}}{{\overline{\mathit D}}^{0}}$

seen

501

$\Gamma_{2}$

${{\mathit D}^{+}}{{\mathit D}^{-}}$

seen

483