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INSPIRE   JSON PDGID: M268

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

was $\mathit{X}(6900)$

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

${\mathit{T}}_{cc\bar{\mathit{c}}\bar{\mathit{c}}}{(6900)}^0$ MASS   $6899\pm 12$ MeV (S = 1.1)

${\mathit{T}}_{cc\bar{\mathit{c}}\bar{\mathit{c}}}{(6900)}^0$ WIDTH   $153\pm 29$ MeV

${\mathit{T}}_{cc\bar{\mathit{c}}\bar{\mathit{c}}}{(6900)}^0$ DECAY MODES
Mode   Fraction (${\mathrm{\Gamma }}_i$ / $\mathrm{\Gamma }$) Scale Factor/ Conf. Level P(MeV/c)   ${\mathrm{\Gamma }}_1$ $\mathit{J}/\psi \mathit{J}/\psi$   seen 1504