CONSTRAINED FIT INFORMATION show precise values?
 
A multiparticle fit to ${{\mathit \eta}_{{{c}}}{(1S)}}$, ${{\mathit J / \psi}{(1S)}}$, ${{\mathit \psi}{(2S)}}$, ${{\mathit h}_{{{c}}}{(1P)}}$ and ${{\mathit B}^{\pm}}$ with the total width, 10 combinations of partial widths obtained from integrated cross section, and 38 branching ratios uses 113 measurements to determine 19 parameters. The overall fit has a $\chi {}^{2}$ = 184.6 for 94 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 14 100
 x9 11 13 100
 x16 7 8 8 100
 x18 9 11 11 7 100
 x37 25 25 22 12 17 100
 x38 13 13 11 6 9 51 100
 x41 7 7 6 4 5 15 8 100
 x45 5 5 5 2 3 12 6 4 100
 x48 13 17 17 10 15 26 13 8 5 100
 x51 19 20 20 11 16 39 20 11 11 24 100
 x53 7 7 8 4 5 22 11 5 10 8 21 100
 x54 5 7 7 4 6 12 6 3 4 10 13 9 100
 x59 -38 -35 -27 -16 -22 -63 -32 -17 -12 -31 -47 -17 -11 100
 x${{\mathit h}_{{{c}}}{(1P)}}$25 -8 -8 -7 -4 -6 -28 -18 -24 -9 -10 -16 -11 -4 20 100
 x${{\mathit \psi}{(2S)}}$182 -1 -1 -1 -1 -1 -3 -2 -3 -1 -5 -3 -1 -1 3 2 100
 x${{\mathit J / \psi}{(1S)}}$237 -17 -28 -32 -19 -30 -38 -19 -13 -7 -46 -40 -13 -20 39 14 3 100
 x${{\mathit B}^{\pm}}$253 -14 -14 -17 -7 -11 -43 -22 -8 -19 -16 -43 -49 -18 34 15 2 26 100
 Γ${{\mathit \eta}_{{{c}}}{(1S)}}$ -1 -1 -1 0 -1 -2 -1 0 0 -1 1 0 0 -20 0 0 1 1 100
   x1  x6  x9  x16  x18  x37  x38  x41  x45  x48  x51  x53  x54  x59  x${{\mathit h}_{{{c}}}{(1P)}}$25  x${{\mathit \psi}{(2S)}}$182  x${{\mathit J / \psi}{(1S)}}$237  x${{\mathit B}^{\pm}}$253 Γ${{\mathit \eta}_{{{c}}}{(1S)}}$
 
    Mode RateScale factor
Γ1  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}{(958)}}{{\mathit \pi}}{{\mathit \pi}}$ ($2.0$ $\pm0.4$) $ \times 10^{-2}$ 1.4
Γ6  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit K}^{*}{(892)}}{{\overline{\mathit K}}^{*}{(892)}}$ ($7.0$ $\pm1.2$) $ \times 10^{-3}$ 
Γ9  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \phi}}$ ($1.8$ $\pm0.4$) $ \times 10^{-3}$ 2.3
Γ16  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \omega}}$ ($2.7$ $\pm0.9$) $ \times 10^{-3}$ 2.1
Γ18  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit f}_{{{2}}}{(1270)}}{{\mathit f}_{{{2}}}{(1270)}}$ ($1.08$ $\pm0.27$) $ \times 10^{-2}$ 
Γ37  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ ($7.1$ $\pm0.4$) $ \times 10^{-2}$ 1.1
Γ38  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \eta}}$ ($1.32$ $\pm0.15$) $ \times 10^{-2}$ 
Γ41  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ ($8.3$ $\pm1.8$) $ \times 10^{-3}$ 1.9
Γ45  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ 2( ${{\mathit K}^{+}}{{\mathit K}^{-}}$) ($1.4$ $\pm0.4$) $ \times 10^{-3}$ 1.4
Γ48  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ 2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) ($9.6$ $\pm1.5$) $ \times 10^{-3}$ 1.4
Γ51  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit p}}{{\overline{\mathit p}}}$ ($1.33$ $\pm0.11$) $ \times 10^{-3}$ 1.1
Γ53  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit p}}{{\overline{\mathit p}}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ ($3.7$ $\pm0.5$) $ \times 10^{-3}$ 
Γ54  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\overline{\mathit \Lambda}}}$ ($1.10$ $\pm0.28$) $ \times 10^{-3}$ 1.5
Γ59  ${{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ ($1.66$ $\pm0.13$) $ \times 10^{-4}$ 1.2
Γ${{\mathit h}_{{{c}}}{(1P)}}$25  ${{\mathit h}_{{{c}}}{(1P)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(1S)}}$ ($6.0$ $\pm0.4$) $ \times 10^{-1}$ 
Γ${{\mathit \psi}{(2S)}}$182  ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(1S)}}$ ($3.6$ $\pm0.5$) $ \times 10^{-3}$ 1.3
Γ${{\mathit J / \psi}{(1S)}}$237  ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(1S)}}$ ($1.41$ $\pm0.14$) $ \times 10^{-2}$ 1.3
Γ${{\mathit B}^{\pm}}$253  ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit \eta}_{{{c}}}}{{\mathit K}^{+}}$ ($1.10$ $\pm0.07$) $ \times 10^{-3}$ 1.1
Γ${{\mathit \eta}_{{{c}}}{(1S)}}$ ${{\mathit \eta}_{{{c}}}{(1S)}}$ WIDTH $30.5$ $\pm0.5$ (MeV) 1.2