CONSTRAINED FIT INFORMATION show precise values?
 
An overall fit to total width, partial width, 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, $\mathit x_{i}$ =$\Gamma _{i}$ $/$ $\Gamma _{total}$. The fit constrains the ${{\mathit x}_{{i}}}$ whose labels appear in this array to sum to one.
 
 x7  100
 x8   100
 x9    100
 x10     100
 x11      100
 x12       100
 x13        100
 x15         100
 Γ          100
   x7  x8  x9  x10  x11  x12  x13  x15 Γ
 
  Mode Rate (MeV)Scale factor
Γ7  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$  $147.5$ $\pm0.9$ 
Γ8  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$  $1.48$ $\pm0.24$ 
Γ9  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \gamma}}$  $0.070$ $\pm0.012$ 1.7
Γ10  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \gamma}}$  $0.0447$ $\pm0.0032$ 
Γ11  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$  $0.0066$ $\pm0.0012$ 
Γ12  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$  $0.0068$ $\pm0.0004$ 
Γ13  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$  $0.00704$ $\pm0.00006$ 
Γ15  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$  $0.0027$ $\pm0.0014$ 
 
An overall fit to 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, $\mathit x_{i}$ =$\Gamma _{i}$ $/$ $\Gamma _{total}$. The fit constrains the ${{\mathit x}_{{i}}}$ whose labels appear in this array to sum to one.
 
 x3  100
 x4   100
 Γ    100
   x3  x4 Γ
 
  Mode Rate (MeV)Scale factor
Γ3  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{\pm}}{{\mathit \pi}^{0}}$  $150.2$ $\pm2.4$ 
Γ4  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{\pm}}{{\mathit \gamma}}$  $0.068$ $\pm0.007$ 2.3