Dear Experts, I ma trying to do a 2D simultaneous fit and I want to create 2 separate samples by applying a cut. I am trying to do it like:
RooDataSet *dataxy_d0 = new RooDataSet(“data”,“data”,tree,RooArgSet(mKK,mD0pi,pisoft_charge),Cut(“pisoft_charge==1”));
But it does not seem to work and I am not sure what I am missing. The messages that I get is:
Will you please help?
In case you want o refer, you can try to run the macro
: simFit_KK.C in this folder:
simultaneous_fit_forum.tar.gz (2.6 MB)