RooMCStudy with binomial distribution


I am using RooMCStudy to do a toyMC study, and have two distributions, one for signal and one for background. I have so the following model:

RooAddPdf model(“model”,“model”,RooArgList(sig,bkg),RooArgList(ratio)) ;

where I have the ratio between signal and background. I then generate a fixed number of events in each pseudo-experiment:
myRooMCStudy->generateAndFit(500,2000) ;

I would like that my number of signal be distributed according to a binomial distribution (the number of background events would then be simply 2000-Nsig). Is there any way to do this?

Thanks for your advice!


Hello Thomas,

I think this should be done automatically, since you generate a fixed number of events and your model pdf is not extended. If you see that this is not done, please post your example code, so it can be investigated