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INSPIRE   JSON PDGID: M268

${{\mathit T}_{{{c c {{\overline{\mathit c}}} {{\overline{\mathit c}}}}}}{(6900)}^{0}}$ $I^G(J^{PC})$ = $0^+(?^{? +})$

was ${{\mathit X}{(6900)}}$

State incompatible with a ${{\mathit q}}{{\overline{\mathit q}}}$ structure. See the review on "Heavy Non-${{\mathit q}}{{\overline{\mathit q}}}$ Mesons."

${{\mathit T}_{{{c c {{\overline{\mathit c}}} {{\overline{\mathit c}}}}}}{(6900)}^{0}}$ MASS   $6899 \pm12$ MeV (S = 1.1)

${{\mathit T}_{{{c c {{\overline{\mathit c}}} {{\overline{\mathit c}}}}}}{(6900)}^{0}}$ WIDTH   $153 \pm29$ MeV

${{\mathit T}_{{{c c {{\overline{\mathit c}}} {{\overline{\mathit c}}}}}}{(6900)}^{0}}$ DECAY MODES
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit J / \psi}}{{\mathit J / \psi}}$   seen 1504
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