RooSimultaneous with different observables

[moneta]

Hi,

You can use different range from the observable using the solution proposed in this old post

Trying a simultaneous fit in RooFit

Hello I want to do something that looks to be very simple, but I got problems when I used RooSimultaneous class in RooFit. I have two data samples S1 and S2, in what I want to fit a gaussian to a signal mass peak and a polynomial to the background, this for each sample. The problem is that my samples have different mass windows. S1 is from m1_min to m1_max, and S2 is from m2_min to m2_max, with m1_min<m2_min and m1_max<m2_max. What I did was to declare the variable M (for mass), put both data s…

Best Regards

Lorenzo