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 PDGID:
M016

${{\mathit f}_{{{4}}}{(2050)}}$

$I^G(J^{PC})$ = $0^+(4^{+ +})$ 
${{\mathit f}_{{{4}}}{(2050)}}$ MASS   $2018 \pm11$ MeV (S = 2.1)
 
${{\mathit f}_{{{4}}}{(2050)}}$ WIDTH   $237 \pm18$ MeV (S = 1.9)
 
$\Gamma_{1}$ ${{\mathit \omega}}{{\mathit \omega}}$   seen 637
 
$\Gamma_{2}$ ${{\mathit \pi}}{{\mathit \pi}}$   $(17.0\pm{1.5})\%$ 1000
 
$\Gamma_{3}$ ${{\mathit K}}{{\overline{\mathit K}}}$   $(6.8^{+3.4}_{-1.8})\times 10^{-3}$ 880
 
$\Gamma_{4}$ ${{\mathit \eta}}{{\mathit \eta}}$   $(2.1\pm{0.8})\times 10^{-3}$ 848
 
$\Gamma_{5}$ 4 ${{\mathit \pi}^{0}}$   $<1.2\%$ 964
 
$\Gamma_{6}$ ${{\mathit \gamma}}{{\mathit \gamma}}$   seen 1009
 
$\Gamma_{7}$ ${{\mathit a}_{{{2}}}{(1320)}}{{\mathit \pi}}$   seen 567
 
FOOTNOTES