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  

${{\mathit f}_{{0}}{(980)}}$

$I^G(J^{PC})$ = $0^+(0^{+ +})$ 
See related review:
Scalar Mesons below 1 GeV
${{\mathit f}_{{0}}{(980)}}$ T-MATRIX POLE $\sqrt {\mathit s }$   $(980 - 1010) − {\mit i} (20 - 35)$ MeV 
 
${{\mathit f}_{{0}}{(980)}}$ MASS   $990 \pm20$ MeV 
 
${{\mathit f}_{{0}}{(980)}}$ WIDTH   $10\text{ to }100 $ MeV 
 
$\Gamma_{1}$ ${{\mathit \pi}}{{\mathit \pi}}$   seen 476
 
$\Gamma_{2}$ ${{\mathit K}}{{\overline{\mathit K}}}$   seen 36
 
$\Gamma_{3}$ ${{\mathit \gamma}}{{\mathit \gamma}}$   seen 495
 
$\Gamma_{4}$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$   495
 
FOOTNOTES