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 $\mathit I = 0$ (${{\mathit \eta}}$, ${{\mathit \eta}^{\,'}}$, ${{\mathit h}}$, ${{\mathit h}^{\,'}}$, ${{\mathit \omega}}$, ${{\mathit \phi}}$, ${{\mathit f}}$, ${{\mathit f}^{\,'}}$): ${\mathit {\mathit c}}_{{\mathrm {1}}}$( ${{\mathit u}}{{\overline{\mathit u}}}$ $+$ ${{\mathit d}}{{\overline{\mathit d}}}$ ) $+$ ${\mathit {\mathit c}}_{{\mathrm {2}}}$( ${{\mathit s}}{{\overline{\mathit s}}}$ ) 		INSPIRE   JSON  (beta) PDGID:
M263

${{\mathit a}_{{0}}{(1710)}}$

$I^G(J^{PC})$ = $1^-(0^{+ +})$ 
Evidence for this state is also inferred from the interference of the ${{\mathit K}^{+}}{{\mathit K}^{-}}$ and ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ decays of the ${{\mathit f}_{{0}}{(1710)}}$ in ${{\mathit D}_{{s}}^{+}}$ $\rightarrow$ ${{\mathit f}_{{0}}{(1710)}}{{\mathit \pi}^{+}}$ , leading to a relative branching ratio an order of magnitude larger than expected from isospin symmetry (ABLIKIM 2022F). See also the review on "Spectroscopy of Light Meson Resonances."
${{\mathit a}_{{0}}{(1710)}}$ MASS   $1711 \pm27$ MeV (S = 5.1)
 
${{\mathit a}_{{0}}{(1710)}}$ WIDTH   $106 \pm15$ MeV 
 
$\Gamma_{1}$ ${{\mathit \pi}}{{\mathit \eta}}$   seen 761
 
$\Gamma_{2}$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$   698
 
$\Gamma_{3}$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$   696
 
$\Gamma_{4}$ ${{\mathit K}_S^0}$ ${{\mathit K}^{+}}$   seen 697
 
FOOTNOTES