LIGHT UNFLAVORED MESONS($\mathit S$ = $\mathit C$ = $\mathit B$ = 0) For $\mathit I = 1$ (${{\mathit \pi}}$ , ${{\mathit b}}$ , ${{\mathit \rho}}$ , ${{\mathit a}}$ ): ${\mathit {\mathit u}}$ ${\mathit {\overline{\mathit d}}}$, ( ${\mathit {\mathit u}}$ ${\mathit {\overline{\mathit u}}}−$ ${\mathit {\mathit d}}$ ${\mathit {\overline{\mathit d}}})/\sqrt {2 }$, ${\mathit {\mathit d}}$ ${\mathit {\overline{\mathit u}}}$;for $\mathit I = 0$ (${{\mathit \eta}}$ , ${{\mathit \eta}^{\,'}}$ , ${{\mathit h}}$ , ${{\mathit h}^{\,'}}$ , ${{\mathit \omega}}$ , ${{\mathit \phi}}$ , ${{\mathit f}}$ , ${{\mathit f}^{\,'}}$ ): ${\mathit {\mathit c}}_{{\mathrm {1}}}$( ${{\mathit u}}{{\overline{\mathit u}}}$ $+$ ${{\mathit d}}{{\overline{\mathit d}}}$ ) $+$ ${\mathit {\mathit c}}_{{\mathrm {2}}}$( ${{\mathit s}}{{\overline{\mathit s}}}$ )

#### ${{\mathit X}{(1750)}}$

$I^G(J^{PC})$ = $?^-(1^{- -})$
The ${{\mathit X}{(1750)}}$ was separated from the ${{\mathit \phi}{(1680)}}$ in the 2022 listings due to its incompatible mass and incompatible pattern of ${{\overline{\mathit K}}}{{\mathit K}}$ and ${{\overline{\mathit K}}^{*}{(892)}}{{\mathit K}}$ branching fractions.
 ${{\mathit X}{(1750)}}$ MASS $1753.8 \pm2.7$ MeV
 ${{\mathit X}{(1750)}}$ WIDTH $120 \pm10$ MeV
 $\Gamma_{1}$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ seen 725
 $\Gamma_{2}$ ${{\overline{\mathit K}}^{*}{(892)}^{0}}{{\mathit K}_S^0}$ not seen 521
 $\Gamma_{3}$ ${{\mathit K}^{*}{(892)}^{\pm}}{{\mathit K}^{\mp}}$ not seen 524
 FOOTNOTES