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:
M101

${{\mathit \eta}_{{2}}{(1870)}}$

$I^G(J^{PC})$ = $0^+(2^{- +})$ 
${{\mathit \eta}_{{2}}{(1870)}}$ MASS   $1842 \pm8$ MeV 
 
${{\mathit \eta}_{{2}}{(1870)}}$ WIDTH   $225 \pm14$ MeV 
 
$\Gamma_{1}$ ${{\mathit \eta}}{{\mathit \pi}}{{\mathit \pi}}$   seen 816
 
$\Gamma_{2}$ ${{\mathit a}_{{2}}{(1320)}}{{\mathit \pi}}$   seen 434
 
$\Gamma_{3}$ ${{\mathit f}_{{2}}{(1270)}}{{\mathit \eta}}$   seen 119
 
$\Gamma_{4}$ ${{\mathit a}_{{0}}{(980)}}{{\mathit \pi}}$   seen 651
 
$\Gamma_{5}$ ${{\mathit \gamma}}{{\mathit \gamma}}$   seen 921
 
FOOTNOTES