CONSTRAINED FIT INFORMATION show precise values?
 
An overall fit to the total width, partial width, uses 10 measurements and one constraint to determine 3 parameters. The overall fit has a $\chi {}^{2}$ = 10.7 for 8 degrees of freedom.
 
The following off-diagonal array elements are the correlation coefficients <$\mathit \delta $x$_{i}\delta $x$_{j}$> $/$ ($\mathit \delta $x$_{i}\cdot{}\delta $x$_{j}$), in percent, from the fit to parameters ${{\mathit p}_{{{i}}}}$, including the branching fractions, $\mathit x_{i}$ = $\Gamma _{i}$ $/$ $\Gamma _{total}$.
 
 x2 100
 x3  100
 Γ${{\mathit \rho}{(770)}}$   100
   x2  x3 Γ${{\mathit \rho}{(770)}}$
 
    Mode RateScale factor
Γ2 ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{\pm}}{{\mathit \pi}^{0}}$ ($99.955$ $\pm0.005$) $ \times 10^{-2}$ 2.2
Γ3 ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{\pm}}{{\mathit \gamma}}$ ($4.5$ $\pm0.5$) $ \times 10^{-4}$ 2.2
Γ${{\mathit \rho}{(770)}}$ CHARGED ONLY, HADROPRODUCED $150.2$ $\pm2.4$ (MeV) 
 
An overall fit to the total width, partial width, and 7 branching ratios uses 21 measurements and one constraint to determine 9 parameters. The overall fit has a $\chi {}^{2}$ = 9.5 for 13 degrees of freedom.
 
The following off-diagonal array elements are the correlation coefficients <$\mathit \delta $x$_{i}\delta $x$_{j}$> $/$ ($\mathit \delta $x$_{i}\cdot{}\delta $x$_{j}$), in percent, from the fit to parameters ${{\mathit p}_{{{i}}}}$, including the branching fractions, $\mathit x_{i}$ = $\Gamma _{i}$ $/$ $\Gamma _{total}$.
 
 x6 100
 x7  100
 x8   100
 x9    100
 x10     100
 x11      100
 x12       100
 x14        100
 Γ${{\mathit \rho}{(770)}}$         100
   x6  x7  x8  x9  x10  x11  x12  x14 Γ${{\mathit \rho}{(770)}}$
 
    Mode RateScale factor
Γ6 ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ ($98.92$ $\pm0.16$) $ \times 10^{-2}$ 
Γ7 ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ ($9.9$ $\pm1.6$) $ \times 10^{-3}$ 
Γ8 ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \gamma}}$ ($4.7$ $\pm0.8$) $ \times 10^{-4}$ 1.7
Γ9 ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \gamma}}$ ($3.00$ $\pm0.21$) $ \times 10^{-4}$ 
Γ10 ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ ($4.5$ $\pm0.8$) $ \times 10^{-5}$ 
Γ11 ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ ($4.55$ $\pm0.28$) $ \times 10^{-5}$ 
Γ12 ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ ($4.72$ $\pm0.05$) $ \times 10^{-5}$ 
Γ14 ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ ($1.8$ $\pm0.9$) $ \times 10^{-5}$ 
Γ${{\mathit \rho}{(770)}}$ CHARGED ONLY, ${{\mathit \tau}}$ DECAYS and ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $149.1$ $\pm0.8$ (MeV)