Roofit distribution normalization for unbinned combine tool fit

Roofit and RooStats
1

Hi,

I’m trying to make unbinned fit in higgs combine tool, for this purpose I create distributions using roofit:
e.g.

 RooRealVar a0("a0","a0",10.0) ;
    RooRealVar a1("a1","a1",10.) ;
    RooRealVar a2("a2","a2",10.0) ;
    RooPolynomial bkg1("bkg1","pol1",x,RooArgList(a0, a1)) ;
    w.import(bkg1);

however, I don’t know how to set normalizations for signal and background functions, as soon as these are pdfs.
Is there any way to do this?

2

Hi,

The pdf classes are automatically normalised in RooFit when they are evaluated for computing the log-likelihood function. You don’t need to worry about it

Best Regards

Lorenzo

3

Hi Lorenzo,

Thanks a lot, seems to be working correctly.

kind regards,
Anton