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Optimization.cxx
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Optimization.cxx
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#include "TInterpreter.h"
#include "TSystem.h"
#include "TNtuple.h"
#include "TFile.h"
#include "TLorentzVector.h"
#include <algorithm>
#include "TString.h"
#include "TChain.h"
#include "TTree.h"
#include "TH1.h"
#include "TCanvas.h"
#include <iostream>
#include "TStyle.h"
#include "TLegend.h"
#include "THStack.h"
#include "RooExponential.h"
#include "RooRealVar.h"
#include "TF1.h"
using namespace std;
TChain* FillChain(TChain* TmpChain,int Opt);
void Optimization (int Option,TString NameVariable, float LeftLowerBound, float LeftUpperBound, float LeftNumSteps, float RightLowerBound, float RightUpperBound, float RightNumSteps)
{
TFile *in_fileSignal = NULL ;
TTree *my_tupleSignal = NULL ;
// TFile *in_fileBkG = NULL ;
//TTree *my_tupleBkG = NULL ;
//To be removed
TChain *my_tupleBkG = NULL ;
//Open files for signal depending on the option (1 for KstKst, 2 for PhiKst, 3 for PhiPhi)
if (Option == 1){
in_fileSignal = TFile::Open("/../../lhcb/panasas/radiative/TupleProd/MC2012sim6b/2012/Bs2KstKstGamma/VVG/S20r0/Bs2KstKstGamma_2012_S20r0_VVG.root");
my_tupleSignal = (TTree*) in_fileSignal->GetObjectChecked("kstkstGammaMCStrip/DecayTree","TTree");
// in_fileBkG = TFile::Open("/../../lhcb/panasas/radiative/TupleProd/MC2012sim6b/2012/Bs2KstKstGamma/VVG/S20r0/Bs2KstKstGamma_2012_S20r0_VVG.root");
// my_tupleBkG = (TTree*) in_fileBkG->GetObjectChecked("kstkstGammaMCStrip/DecayTree","TTree");
my_tupleBkG = new TChain("kstkstGammaStrip/DecayTree");
}
/*
else if (Option == 2){
in_fileSignal = TFile::Open("/../../lhcb/panasas/radiative/TupleProd/MC11a/2011/Bd2PhiKstGamma/VVG/S20r1/Bd2PhiKstGamma_2011_S20r1_VVG.root");
my_tupleSignal = (TTree*) in_fileSignal->GetObjectChecked("phikstGammaMCStrip/DecayTree","TTree");
in_fileBkG = TFile::Open("/../../lhcb/panasas/radiative/TupleProd/MC11a/2011/Bd2PhiKstGamma/VVG/S20r1/Bd2PhiKstGamma_2011_S20r1_VVG.root");
my_tupleBkG = (TTree*) in_fileBkG->GetObjectChecked("phikstGammaMCStrip/DecayTree","TTree");
}
else if (Option == 3){
in_fileSignal = TFile::Open("/../../lhcb/panasas/radiative/TupleProd/MC11a/2011/Bs2PhiPhiGamma/VVG/S20r1/Bs2PhiPhiGamma_2011_S20r1_VVG.root");
my_tupleSignal = (TTree*) in_fileSignal->GetObjectChecked("phiphiGammaMCStrip/DecayTree","TTree");
in_fileBkG = TFile::Open("/../../lhcb/panasas/radiative/TupleProd/MC11a/2011/Bs2PhiPhiGamma/VVG/S20r1/Bs2PhiPhiGamma_2011_S20r1_VVG.root");
my_tupleBkG = (TTree*) in_fileBkG->GetObjectChecked("phiphiGammaMCStrip/DecayTree","TTree");
}
*/
// assert ( in_fileSignal && in_fileBkG && my_tupleSignal && my_tupleBkG ) ;
assert ( in_fileSignal && my_tupleSignal && my_tupleBkG ) ;
//Creates TChain to take a sample for data
my_tupleBkG = FillChain(my_tupleBkG,Option);
//Set Upper and Lower limit for the signal window (5186-5546 MeV for PhiPhi and KstKst(B0s Mass= 5366MeV), 5099-5459MeV for PhiKst(B0 Mass = 5279 MeV))
float LowerLimit = 5186;
float UpperLimit = 5546;
if (Option == 2){
float LowerLimit = 5099;
float UpperLimit = 5459;
}
//Create the Histogramms
//Create Title for the histogramms of the considered variable
TString TitleHisto = TString (NameVariable.Data()) + ";;";
//Create histogramms
TH1F* hB_MMSig=new TH1F("B_MM","Mass;Mass (GeV);",
100,//Number of bins
4000,//Lower X Boundary
6500); //Upper X Boundary
hB_MMSig->SetFillColor(kBlue-9);
TH1F* hB_MMBkG=new TH1F("B_MM","Mass;Mass (GeV);",
100,//Number of bins
4000,//Lower X Boundary
6500);//Upper X Boundary
hB_MMBkG->SetLineColor(kBlue+1);
//Select loaves to be read
double TemporaryVariable, B_MM;
//Select the loaves to be read
my_tupleSignal->SetBranchAddress(NameVariable.Data(),&TemporaryVariable);
my_tupleSignal->SetBranchAddress("B_MM",&B_MM);
my_tupleBkG->SetBranchAddress(NameVariable.Data(),&TemporaryVariable);
my_tupleBkG->SetBranchAddress("B_MM",&B_MM);
//Define steps
float LeftStep = (LeftUpperBound-LeftLowerBound)/LeftNumSteps;
float RightStep = (RightUpperBound-RightLowerBound)/RightNumSteps;
//Initialize FigureOfMerit, LowerCut and HigherCut
float FigMerit = 0;
float LowerCut = LeftLowerBound;
float UpperCut = RightUpperBound;
float Efficiency = 0;
float NumEvtsBkG = 0;
//Enter the loop
for (int ix=0;ix<(LeftNumSteps+1);++ix) {
//Define temporary Left cut
float tmpLowerCut = LeftLowerBound + ix*LeftStep;
cout<<"Temporary Lower Cut"<<tmpLowerCut<<endl;
for (int iy=0;iy<(RightNumSteps+1);++iy) {
//Define temporary Right cut
float tmpUpperCut = RightLowerBound + iy*RightStep;
cout<<"Temporary Upper Cut"<<tmpUpperCut<<endl;
hB_MMSig->Reset();
hB_MMBkG->Reset();
//Fill Cut Signal histogramm
int entrySig = 0;
while (my_tupleSignal->GetEntry(entrySig) ){
if ((TemporaryVariable>tmpLowerCut)&&(TemporaryVariable<tmpUpperCut)){
hB_MMSig->Fill(B_MM);
}
++entrySig ;
}
//Fill Cut BkG histogramm
int entryBkG = 0;
while (my_tupleBkG->GetEntry(entryBkG) ){
if (((B_MM<LowerLimit)||(B_MM>UpperLimit))&&(TemporaryVariable>tmpLowerCut)&&(TemporaryVariable<tmpUpperCut)){
hB_MMBkG->Fill(B_MM);
}
++entryBkG ;
}
//Compute Efficiency (for Signal Events)
Efficiency = 0 ;
cout<<"Efficiency before computing integral"<<Efficiency<<endl;
Efficiency = (hB_MMSig->Integral())/entrySig ;
cout<<"Efficiency after computing integral"<<Efficiency<<endl;
//Compute Number of events in the Background (here we'll have to fit the BkG)
//Create Fitting Functions
TF1* gHBkG = new TF1 ("gHBkG","expo",4000,6500);
TF1* gLBkG = new TF1 ("gLBkG","expo",4000,6500);
hB_MMBkG->Fit("gHBkG","","",UpperLimit,6500);
hB_MMBkG->Fit("gLBkG","","",4000,LowerLimit);
// TF1 *gHBkGClone = (TF1*)gHBkG->Clone("gHBkG");
// TF1 *gLBkGClone = (TF1*)gLBkG->Clone("gLBkG");
TF1* gBkG = new TF1("gBkG","(gHBkG+gLBkG+abs(gHBkG-gLBkG))/2",4000,6500);
// float NumHBkG = gHBkG->Integral(LowerLimit,6500);
// float NumLBkG = gLBkG->Integral(4000,UpperLimit);
cout<<"NumOfEvents before computing the integral :"<<NumEvtsBkG<<endl;
float NumEvtsBkG = gBkG->Integral(4000,6500) ;
cout<<"Number of events in the BkG :"<<NumEvtsBkG<<endl;
//Compute TemporaryFigure of merit
float tmpFigMerit = Efficiency / sqrt(NumEvtsBkG);
cout<<"Temporary Figure of Merit"<<tmpFigMerit<<endl;
//Replace FigOfMerit and Cuts if the tmpFigOfMerit is better than FigOfMerit
if (tmpFigMerit>FigMerit){
FigMerit = tmpFigMerit;
LowerCut = tmpLowerCut;
UpperCut = tmpUpperCut;
cout<<"Changed figure of merit to :"<<FigMerit<<endl;
cout<<"Changed Lower Cut to :"<<LowerCut<<endl;
cout<<"Changed Upper Cut to :"<<UpperCut<<endl;
}
}
}
cout<<"Optimized Figure of Merit : "<<FigMerit<<"\n"<<"LowerCut : "<<LowerCut<<"\n"<<"UpperCut : "<<UpperCut<<endl;
}
TChain* FillChain(TChain* TmpChain,int Opt)
{
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_5_dz_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_aa_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_ab_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_ac_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_ad_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_ae_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_af_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_ag_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_ah_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_ai_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_aj_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_ak_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_al_ntp.root");
// TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_am_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_an_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_ao_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_ap_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_aq_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_ar_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_as_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_at_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_au_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_av_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_aw_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_ax_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_ay_ntp.root");
TmpChain->AddFile("/../../lhcb/panasas/radiative/TupleProd/Data/2012/RADIATIVE/VVG/S20r0/MagDown/radiativeVVG_R14S20r0_MagDown_2_az_ntp.root");
return TmpChain;
}