I’ve a simple problem. I’m using TMinuit to fit a function. I call first Migrad and when the fit is complex also Minos. Minos manages to find a correct minimum and gives back correct errors. Unfortunately when I use the command gMinuit.GetParameter() the parameters which are reported there are not the best-fit ones but the ones (+1sigma or -1sigma) found by Minos during the error search.
Now what shall I do to retrieve the correct best-fit parameters ?