CONSTRAINED FIT INFORMATION show precise values?
A multiparticle fit to ${{\mathit \eta}_{{{c}}}{(1S)}}$, ${{\mathit J / \psi}{(1S)}}$, ${{\mathit B}^{\pm}}$, ${{\mathit \psi}{(2S)}}$ and ${{\mathit h}_{{{c}}}{(1P)}}$ with the total width, 10 combinations of partial widths obtained from integrated cross section, and 38 branching ratios uses 115 measurements to determine 19 parameters. The overall fit has a $\chi {}^{2}$ = 215.4 for 96 degrees of freedom.
 
 
The following off-diagonal array elements are the correlation coefficients <$\mathit \delta $p$_{i}\delta $p$_{j}$> $/$ ($\mathit \delta $p$_{i}\cdot{}\delta $p$_{j}$), in percent, from the fit to parameters ${{\mathit p}_{{{i}}}}$, including the branching fractions, $\mathit x_{i}$ = $\Gamma _{i}$ $/$ $\Gamma _{total}$.
 
 x1 100
 x6  100
 x9   100
 x16    100
 x18     100
 x37      100
 x38       100
 x41        100
 x45         100
 x48          100
 x52           100
 x54            100
 x55             100
 x60              100
 x${{\mathit h}_{{{c}}}{(1P)}}$30               100
 x${{\mathit \psi}{(2S)}}$199                100
 x${{\mathit J / \psi}{(1S)}}$248                 100
 x${{\mathit B}^{\pm}}$274                  100
 Γ${{\mathit \eta}_{{{c}}}{(1S)}}$                   100
   x1  x6  x9  x16  x18  x37  x38  x41  x45  x48  x52  x54  x55  x60  x${{\mathit h}_{{{c}}}{(1P)}}$30  x${{\mathit \psi}{(2S)}}$199  x${{\mathit J / \psi}{(1S)}}$248  x${{\mathit B}^{\pm}}$274 Γ${{\mathit \eta}_{{{c}}}{(1S)}}$
 
    Mode RateScale factor
Γ1 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}{(958)}}{{\mathit \pi}}{{\mathit \pi}}$ ($1.59$ $\pm0.34$) $ \times 10^{-2}$ 1.7
Γ6 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit K}^{*}{(892)}}{{\overline{\mathit K}}^{*}{(892)}}$ ($5.5$ $\pm1.1$) $ \times 10^{-3}$ 1.2
Γ9 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \phi}}$ ($1.4$ $\pm0.4$) $ \times 10^{-3}$ 2.9
Γ16 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \omega}}$ ($2.1$ $\pm0.8$) $ \times 10^{-3}$ 2.4
Γ18 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit f}_{{{2}}}{(1270)}}{{\mathit f}_{{{2}}}{(1270)}}$ ($8.4$ $\pm2.4$) $ \times 10^{-3}$ 1.2
Γ37 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ ($5.9$ $\pm0.5$) $ \times 10^{-2}$ 1.8
Γ38 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \eta}}$ ($1.11$ $\pm0.15$) $ \times 10^{-2}$ 1.3
Γ41 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ ($6.7$ $\pm1.8$) $ \times 10^{-3}$ 2.4
Γ45 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ 2( ${{\mathit K}^{+}}{{\mathit K}^{-}}$) ($1.2$ $\pm0.4$) $ \times 10^{-3}$ 1.6
Γ48 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ 2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) ($7.5$ $\pm1.3$) $ \times 10^{-3}$ 1.6
Γ52 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit p}}{{\overline{\mathit p}}}$ ($1.11$ $\pm0.12$) $ \times 10^{-3}$ 1.4
Γ54 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit p}}{{\overline{\mathit p}}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ ($3.4$ $\pm0.5$) $ \times 10^{-3}$ 1.2
Γ55 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\overline{\mathit \Lambda}}}$ ($9.4$ $\pm1.8$) $ \times 10^{-4}$ 1.2
Γ60 ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ ($2.13$ $\pm0.15$) $ \times 10^{-4}$ 1.5
Γ${{\mathit h}_{{{c}}}{(1P)}}$30 ${{\mathit h}_{{{c}}}{(1P)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(1S)}}$ ($64$ $\pm5$) $ \times 10^{-2}$ 1.2
Γ${{\mathit \psi}{(2S)}}$199 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(1S)}}$ ($3.6$ $\pm0.5$) $ \times 10^{-3}$ 1.3
Γ${{\mathit J / \psi}{(1S)}}$248 ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(1S)}}$ ($1.82$ $\pm0.15$) $ \times 10^{-2}$ 1.6
Γ${{\mathit B}^{\pm}}$274 ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit \eta}_{{{c}}}}{{\mathit K}^{+}}$ ($1.20$ $\pm0.08$) $ \times 10^{-3}$ 1.3
Γ${{\mathit \eta}_{{{c}}}{(1S)}}$ ${{\mathit \eta}_{{{c}}}{(1S)}}$ WIDTH $30.0$ $\pm0.5$ (MeV) 1.2