#ifndef RooStats_NumberCountingUtils
#include "RooStats/NumberCountingUtils.h"
#endif
#ifndef RooStats_RooStatsUtils
#include "RooStats/RooStatsUtils.h"
#endif
Double_t RooStats::NumberCountingUtils::BinomialExpP(Double_t signalExp, Double_t backgroundExp, Double_t relativeBkgUncert){
Double_t mainInf = signalExp+backgroundExp;
Double_t tau = 1./backgroundExp/(relativeBkgUncert*relativeBkgUncert);
Double_t auxiliaryInf = backgroundExp*tau;
Double_t P_Bi = TMath::BetaIncomplete(1./(1.+tau),mainInf,auxiliaryInf+1);
return P_Bi;
}
Double_t RooStats::NumberCountingUtils::BinomialWithTauExpP(Double_t signalExp, Double_t backgroundExp, Double_t tau){
Double_t mainInf = signalExp+backgroundExp;
Double_t auxiliaryInf = backgroundExp*tau;
Double_t P_Bi = TMath::BetaIncomplete(1./(1.+tau),mainInf,auxiliaryInf+1);
return P_Bi;
}
Double_t RooStats::NumberCountingUtils::BinomialObsP(Double_t mainObs, Double_t backgroundObs, Double_t relativeBkgUncert){
Double_t tau = 1./backgroundObs/(relativeBkgUncert*relativeBkgUncert);
Double_t auxiliaryInf = backgroundObs*tau;
Double_t P_Bi = TMath::BetaIncomplete(1./(1.+tau),mainObs,auxiliaryInf+1);
return P_Bi;
}
Double_t RooStats::NumberCountingUtils::BinomialWithTauObsP(Double_t mainObs, Double_t auxiliaryObs, Double_t tau){
Double_t P_Bi = TMath::BetaIncomplete(1./(1.+tau),mainObs,auxiliaryObs+1);
return P_Bi;
}
Double_t RooStats::NumberCountingUtils::BinomialExpZ(Double_t signalExp, Double_t backgroundExp, Double_t relativeBkgUncert) {
return RooStats::PValueToSignificance( BinomialExpP(signalExp,backgroundExp,relativeBkgUncert) ) ;
}
Double_t RooStats::NumberCountingUtils::BinomialWithTauExpZ(Double_t signalExp, Double_t backgroundExp, Double_t tau){
return RooStats::PValueToSignificance( BinomialWithTauExpP(signalExp,backgroundExp,tau) ) ;
}
Double_t RooStats::NumberCountingUtils::BinomialObsZ(Double_t mainObs, Double_t backgroundObs, Double_t relativeBkgUncert){
return RooStats::PValueToSignificance( BinomialObsP(mainObs,backgroundObs,relativeBkgUncert) ) ;
}
Double_t RooStats::NumberCountingUtils::BinomialWithTauObsZ(Double_t mainObs, Double_t auxiliaryObs, Double_t tau){
return RooStats::PValueToSignificance( BinomialWithTauObsP(mainObs,auxiliaryObs,tau) ) ;
}
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