Hi,
See my previous answer 4 ways to compute chi2 -> 4 different numbers in RooFit
Concerning the error, I think you are not plotting the full pdf but only the “cb” component. Just add a line
sum.plotOn(frame) ;
Best Regards
Lorenzo
Hi,
See my previous answer 4 ways to compute chi2 -> 4 different numbers in RooFit
Concerning the error, I think you are not plotting the full pdf but only the “cb” component. Just add a line
sum.plotOn(frame) ;
Best Regards
Lorenzo