Line: 1 to 1  

Fake Rate Definitions
 
Changed:  
< <  Numerator definition  
> >  High Pt Photon IDOur photon identification variables and cuts use the High pT photon ID V2 working points.
Sigma_IphiIphi cutIn addition to the below object definitions, we apply a cut on sigma_IphiIphi to remove beam halo. This cut is applied offline as follows if (Photon_sigmaIphiIphi5x5 < 0.009) continue; See our discussion of beam halo rejection on the fake rate twiki: Rejection of Beam Halo in Jet Data Sample
Numerator object definition  
We form a "relaxed numerator" compared to what we would get solely by using our photon ID. Since we will start by using sigma_iEtaiEta templates, this is the variable we choose to relax. Our numerator definition is the same ID as the High pT photon ID, but without any sigma_iEtaiEta cut.  
Changed:  
< <  Denominator definition  
> >  In the code, we select numerator object candidates
photonInfo.isNumeratorObjCand = ExoDiPhotons::passNumeratorCandCut(photon,rho,isSat); where
Finally, we select our numerator objects offline as bool isNumeratorObj = Photon_isNumeratorObjCand && Photon_passChIso;
Denominator object definition  
We form a "loosebutnottight" denominator. An object must pass
iso < min[5*(iso cut), 0.2*photon>pt()]  
Changed:  
< <  where "iso" is each isolation variable used in the High pT photon ID, of which there are two: charged hadron isolation and "corrected" photon isolation. In addition, we require the object to fail at least one of the High pT photon ID variables, except for the CSEV, which can be applied offline, if desired.  
> >  where "iso" is each isolation variable used in the High pT photon ID, of which there are two: charged hadron isolation and "corrected" photon isolation. In addition, we require the object to fail at least one of the High pT photon ID variables, except for the CSEV, which we require the object to pass.
In the code, we select denominator objects as photonInfo.isDenominatorObj = ExoDiPhotons::passDenominatorCut(photon,rho,isSat); where
The relaxed isolation cuts are
and
Real templatesOur real templates also come from selecting numerator objects bool isNumeratorObj = Photon_isNumeratorObjCand && Photon_passChIso; but are known real objects from MC.
Fake templatesOur fake templates come from numerator objects, but only those that fall into a certain side band of the charged hadron isolation variable. Offline we select bool isFakeTemplateObj = Photon_isNumeratorObjCand && inChIsoSideband; where bool inChIsoSideband = (10. < Photon_chargedHadIso03) && (Photon_chargedHadIso03 < 15.);  
Sigma_iEtaiEta  
Line: 25 to 83  
https://github.com/cmsexoticadiphotons/diphotonanalysis/blob/master/CommonClasses/interface/PhotonID.h
 AndrewBuccilli  20160307  
Added:  
> > 
