#82 Simultaneous Extended Maximum Likelihood Fit

[Stefanos]

I'm performing a simultaneous extended maximum likelihood fit. The problem I'm facing is the following:

On one of the fits, that I'm fitting with a RooAddPDF Sum=Gaussian+Exponential, the result of the fit is a Sum = (Gaussian+Exponential)/2. When I use the same parameterization on non Simultaneous fit, fit is ok (Sum = Gaussian + Exponential).

Does the quality of the one fit affects the other? I'm very much confused..

[Stefanos]