// Funktion für den differentiellen Wirkungsquerschnitt (ausgerechnet bis auf nicht analytisch bestimmbare Parton-Parton-Prozesse)
inline double diffCrossSection(double* x,size_t numDim,void* params) {
// Theta(x1*x2*s-m_h^2)
if (x[0]*x[1]*S_PP*S_PP<M_H*M_H)
return 0.0;
// LHAPDF aus Parameter abfragen
LHAPDF::PDF* pdf = (LHAPDF::PDF*)params;
// Ergebnisvariable initialisieren
double result = 0.0;
// Alle möglichen Parton-Parton-Reaktionen durchgehen und zum Ergebnis summieren
for (int i=1;i<7;i++) {
result += pdf->xfxQ(i,x[0],M_H)/x[0]*pdf->xfxQ(-i,x[1],M_H)/x[1] /* f_q(x1)*f_qbar(x2) */
* COS2_THETA_W/144./M_PI /* cos^2(theta_W)/(144 PI) */
* (x[0]*x[1]*S_PP*S_PP-M_H*M_H)*(x[0]*x[1]*S_PP*S_PP-M_H*M_H)*(x[0]*x[1]*S_PP*S_PP-M_H*M_H) /* (x1*x2*s-m_h^2)^3 */
/ (x[0]*x[1]*S_PP*S_PP)/(x[0]*x[1]*S_PP*S_PP); /* (x1*x2*s)^2 */
result += pdf->xfxQ(-i,x[0],M_H)/x[0]*pdf->xfxQ(i,x[1],M_H)/x[1] /* f_qbar(x1)*f_q(x2) */
* COS2_THETA_W/144./M_PI /* cos^2(theta_W)/(144 PI) */
* (x[0]*x[1]*S_PP*S_PP-M_H*M_H)*(x[0]*x[1]*S_PP*S_PP-M_H*M_H)*(x[0]*x[1]*S_PP*S_PP-M_H*M_H) /* (x1*x2*s-m_h^2)^3 */
/ (x[0]*x[1]*S_PP*S_PP)/(x[0]*x[1]*S_PP*S_PP); /* (x1*x2*s)^2 */
}
// Ergebnis zurückgeben
return result;
}
void PDFHub::initialize_lha_pdf()
{
vector<string> gridnames = determine_grids();
LHAPDF::setVerbosity(LHAPDF::SILENT);
for(unsigned grid=0; grid<gridnames.size(); ++grid)
{
//cout<<"\n[PDFHub] : initializing "<<gridnames[grid]<<endl;
// initialise the LHAPDF set corresponding to grids[grid]
int grid_number_for_lhapdf = grid+1;
//LHAPDF::initPDFSet(grid_number_for_lhapdf,
// gridnames[grid], LHAPDF::LHGRID);
//lhapdf6 interface
LHAPDF::PDF* pdf = LHAPDF::mkPDF(gridnames[grid], 0);
//cout<<"\n[PDFHub] : pdf_error is "<<pdf_error_<<endl;
// Using the LHAPDF-routine numberPDF, we can determine the number of members of the currently loaded set
unsigned membernum;
if (pdf_error_) membernum = LHAPDF::numberPDF()+1;
else membernum = 1;
// thank you, GJR, for this additional line of code
if((provider_ == "GJR") && (pert_order_ == 0)) membernum=1;
// loop over members:
for (int member=0; member<membernum; member++)
{
// thank you, GJR, for this additional 2 lines of code
if((provider_ == "GJR") && (pert_order_ == 0)) ++member;
// initialise the correct member set
LHAPDF::usePDFMember(grid_number_for_lhapdf,member);
// retrieve the alpha_s of this member !!! hardcoded m_z ok?
//_alpha_s_at_mz.push_back(LHAPDF::alphasPDF(91.1876));
//lhapdf6 interface
_alpha_s_at_mz.push_back(pdf->alphaS().alphasQ(91.1876));
grids_->add(gridnames[grid],grid_number_for_lhapdf,member);
}
}
}
//void acceptGenW(TString input="wellnu_ct10_wp_v2.root",
void acceptGenW(TString input="/afs/cern.ch/work/j/jlawhorn/theo-unc-06-10/WmJetsToLNu.root",
TString outputDir="idfk/",
//TString pdfName="NNPDF30_nlo_nf_5_pdfas",
//TString pdfName="CT14nlo",
TString pdfName="MMHT2014nlo68cl",
Int_t setMin=0,
Int_t setMax=0,
Int_t proc=2) {
TString procName[4]={"wme", "wpe", "wmm", "wpm"};
char output[150];
sprintf(output, "%s%s_%s.root", outputDir.Data(), procName[proc].Data(), pdfName.Data());
cout << "proc: " << procName[proc] << endl;
TChain chain("Events");
chain.Add(input);
//PDF info
Double_t id_1, id_2, x_1, x_2;
Double_t xPDF_1, xPDF_2, scalePDF, weight;
//Generator level V+l info
Double_t genV_id, genL1_id, genL2_id;
Double_t genV_pt, genV_eta, genV_phi, genV_m;
Double_t genVf_pt, genVf_eta, genVf_phi, genVf_m;
Double_t genL1_pt, genL1_eta, genL1_phi, genL1_m;
Double_t genL2_pt, genL2_eta, genL2_phi, genL2_m;
Double_t genL1f_pt, genL1f_eta, genL1f_phi, genL1f_m;
Double_t genL2f_pt, genL2f_eta, genL2f_phi, genL2f_m;
chain.SetBranchAddress("id_1", &id_1);
chain.SetBranchAddress("id_2", &id_2);
chain.SetBranchAddress("x_1", &x_1);
chain.SetBranchAddress("x_2", &x_2);
chain.SetBranchAddress("xPDF_1", &xPDF_1);
chain.SetBranchAddress("xPDF_2", &xPDF_2);
chain.SetBranchAddress("scalePDF", &scalePDF);
chain.SetBranchAddress("weight", &weight);
chain.SetBranchAddress("genV_pt", &genV_pt);
chain.SetBranchAddress("genV_eta", &genV_eta);
chain.SetBranchAddress("genV_phi", &genV_phi);
chain.SetBranchAddress("genV_m", &genV_m);
chain.SetBranchAddress("genV_id", &genV_id);
chain.SetBranchAddress("genVf_pt", &genVf_pt);
chain.SetBranchAddress("genVf_eta", &genVf_eta);
chain.SetBranchAddress("genVf_phi", &genVf_phi);
chain.SetBranchAddress("genVf_m", &genVf_m);
chain.SetBranchAddress("genL1_pt", &genL1_pt);
chain.SetBranchAddress("genL1_eta", &genL1_eta);
chain.SetBranchAddress("genL1_phi", &genL1_phi);
chain.SetBranchAddress("genL1_m", &genL1_m);
chain.SetBranchAddress("genL1_id", &genL1_id);
chain.SetBranchAddress("genL2_pt", &genL2_pt);
chain.SetBranchAddress("genL2_eta", &genL2_eta);
chain.SetBranchAddress("genL2_phi", &genL2_phi);
chain.SetBranchAddress("genL2_m", &genL2_m);
chain.SetBranchAddress("genL2_id", &genL2_id);
chain.SetBranchAddress("genL1f_pt", &genL1f_pt);
chain.SetBranchAddress("genL1f_eta", &genL1f_eta);
chain.SetBranchAddress("genL1f_phi", &genL1f_phi);
chain.SetBranchAddress("genL1f_m", &genL1f_m);
chain.SetBranchAddress("genL2f_pt", &genL2f_pt);
chain.SetBranchAddress("genL2f_eta", &genL2f_eta);
chain.SetBranchAddress("genL2f_phi", &genL2f_phi);
chain.SetBranchAddress("genL2f_m", &genL2f_m);
TFile *outFile = new TFile(output, "recreate");
LHAPDF::PDF* nomPdf = LHAPDF::mkPDF(292200);
//LHAPDF::PDF* nomPdf = LHAPDF::mkPDF(25100);
//LHAPDF::PDF* nomPdf = LHAPDF::mkPDF(13100);
//LHAPDF::PDF* nomPdf = LHAPDF::mkPDF(11000);
for (Int_t iPdfSet=setMin; iPdfSet<setMax+1; iPdfSet++) {
LHAPDF::PDF* testPdf = LHAPDF::mkPDF(pdfName.Data(),iPdfSet);
char histname[100];
sprintf(histname,"dEta_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dEta = new TH1D(histname, "", 20, -5, 5); dEta->Sumw2();
sprintf(histname,"dPt_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dPt = new TH1D(histname, "", 25, 25, 100); dPt->Sumw2();
sprintf(histname,"dPreB_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dPreB = new TH1D(histname, "", 1, 0, 2); dPreB->Sumw2();
sprintf(histname,"dPreE_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dPreE = new TH1D(histname, "", 1, 0, 2); dPreE->Sumw2();
sprintf(histname,"dPostB_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dPostB = new TH1D(histname, "", 1, 0, 2); dPostB->Sumw2();
sprintf(histname,"dPostE_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dPostE = new TH1D(histname, "", 1, 0, 2); dPostE->Sumw2();
sprintf(histname,"dTot_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dTot = new TH1D(histname, "", 1, 0, 2); dTot->Sumw2();
for (Int_t i=0; i<chain.GetEntries(); i++) {
chain.GetEntry(i);
//cout << genV_id << ", " << genL1_id << ", " << genL2_id << ", " << genL1f_pt << ", " << genL1f_eta << endl;
if (!isProc(proc, genV_id, genV_m, genL1_id, genL2_id)) continue;
if ((proc==0||proc==2) && genL2f_pt==0 && genL2f_eta==0) continue;
if ((proc==1||proc==3) && genL1f_pt==0 && genL1f_eta==0) continue;
Int_t fid_1 = ( id_1==0 ? 21 : id_1 );
Int_t fid_2 = ( id_2==0 ? 21 : id_2 );
//cout << genV_id << ", " << genL1f_pt << ", " << genL2f_pt << endl;
Double_t newWeight = weight*testPdf->xfxQ(fid_1, x_1, scalePDF)*testPdf->xfxQ(fid_2, x_2, scalePDF)/(nomPdf->xfxQ(fid_1, x_1, scalePDF)*nomPdf->xfxQ(fid_2, x_2, scalePDF));
if (newWeight < 3e-10) continue;
dTot->Fill(1.0,newWeight);
Bool_t passBar =acceptBarrel(proc, genV_id, genV_m, genL1_id, genL2_id, genL1_pt, genL1_eta, genL2_pt, genL2_eta);
Bool_t passBarF=acceptBarrel(proc, genV_id, genV_m, genL1_id, genL2_id, genL1f_pt, genL1f_eta, genL2f_pt, genL2f_eta);
Bool_t passEnd =acceptEndcap(proc, genV_id, genV_m, genL1_id, genL2_id, genL1_pt, genL1_eta, genL2_pt, genL2_eta);
Bool_t passEndF=acceptEndcap(proc, genV_id, genV_m, genL1_id, genL2_id, genL1f_pt, genL1f_eta, genL2f_pt, genL2f_eta);
if (passBar) dPreB->Fill(1.0, newWeight);
else if (passEnd) dPreE->Fill(1.0, newWeight);
if (passBarF) dPostB->Fill(1.0, newWeight);
else if (passEndF) dPostE->Fill(1.0, newWeight);
if (passBarF || passEndF) {
if (proc==wme || proc==wmm) {
dEta->Fill(genL2f_eta, newWeight);
dPt->Fill(genL2f_pt, newWeight);
}
else {
dEta->Fill(genL1f_eta, newWeight);
dPt->Fill(genL1f_pt, newWeight);
}
}
}
Double_t acc=(dPreB->Integral()+dPreE->Integral())/(dTot->Integral());
//cout << dPreB->Integral()/dTot->Integral() << endl;
//cout << dPreE->Integral()/dTot->Integral() << endl;
cout << "Pre-FSR acceptance: " << acc << " +/- " << sqrt(acc*(1-acc)/dTot->GetEntries()) << endl;
acc=(dPostB->Integral()+dPostE->Integral())/(dTot->Integral());
//cout << dPostB->Integral()/dTot->Integral() << endl;
//cout << dPostE->Integral()/dTot->Integral() << endl;
cout << "Post-FSR acceptance: " << acc << " +/- " << sqrt(acc*(1-acc)/dTot->GetEntries()) << endl;
outFile->Write();
}
outFile->Close();
}
void acceptGenZ(TString input="/afs/cern.ch/work/j/jlawhorn/theo-unc-06-10/DYJetsToLL.root",
//void acceptGenZ(TString input="dyellell_ct10_v2.root",
TString outputDir="idfk/",
//TString pdfName="NNPDF30_nlo_nf_5_pdfas",
//TString pdfName="CT14nlo",
TString pdfName="MMHT2014nlo68cl",
Int_t setMin=0,
Int_t setMax=0,
Int_t proc=0) {
TString procName[2]={"zee", "zmm"};
char output[150];
sprintf(output, "%s%s_%s.root", outputDir.Data(), procName[proc].Data(), pdfName.Data());
cout << output << endl;
TChain chain("Events");
chain.Add(input);
//PDF info
Double_t id_1, id_2, x_1, x_2;
Double_t xPDF_1, xPDF_2, scalePDF, weight;
//Generator level V+l info
Double_t genV_id, genL1_id, genL2_id;
Double_t genV_pt, genV_eta, genV_phi, genV_m;
Double_t genVf_pt, genVf_eta, genVf_phi, genVf_m;
Double_t genL1_pt, genL1_eta, genL1_phi, genL1_m;
Double_t genL2_pt, genL2_eta, genL2_phi, genL2_m;
Double_t genL1f_pt, genL1f_eta, genL1f_phi, genL1f_m;
Double_t genL2f_pt, genL2f_eta, genL2f_phi, genL2f_m;
chain.SetBranchAddress("id_1", &id_1);
chain.SetBranchAddress("id_2", &id_2);
chain.SetBranchAddress("x_1", &x_1);
chain.SetBranchAddress("x_2", &x_2);
chain.SetBranchAddress("xPDF_1", &xPDF_1);
chain.SetBranchAddress("xPDF_2", &xPDF_2);
chain.SetBranchAddress("scalePDF", &scalePDF);
chain.SetBranchAddress("weight", &weight);
chain.SetBranchAddress("genV_pt", &genV_pt);
chain.SetBranchAddress("genV_eta", &genV_eta);
chain.SetBranchAddress("genV_phi", &genV_phi);
chain.SetBranchAddress("genV_m", &genV_m);
chain.SetBranchAddress("genV_id", &genV_id);
chain.SetBranchAddress("genVf_pt", &genVf_pt);
chain.SetBranchAddress("genVf_eta", &genVf_eta);
chain.SetBranchAddress("genVf_phi", &genVf_phi);
chain.SetBranchAddress("genVf_m", &genVf_m);
chain.SetBranchAddress("genL1_pt", &genL1_pt);
chain.SetBranchAddress("genL1_eta", &genL1_eta);
chain.SetBranchAddress("genL1_phi", &genL1_phi);
chain.SetBranchAddress("genL1_m", &genL1_m);
chain.SetBranchAddress("genL1_id", &genL1_id);
chain.SetBranchAddress("genL2_pt", &genL2_pt);
chain.SetBranchAddress("genL2_eta", &genL2_eta);
chain.SetBranchAddress("genL2_phi", &genL2_phi);
chain.SetBranchAddress("genL2_m", &genL2_m);
chain.SetBranchAddress("genL2_id", &genL2_id);
chain.SetBranchAddress("genL1f_pt", &genL1f_pt);
chain.SetBranchAddress("genL1f_eta", &genL1f_eta);
chain.SetBranchAddress("genL1f_phi", &genL1f_phi);
chain.SetBranchAddress("genL1f_m", &genL1f_m);
chain.SetBranchAddress("genL2f_pt", &genL2f_pt);
chain.SetBranchAddress("genL2f_eta", &genL2f_eta);
chain.SetBranchAddress("genL2f_phi", &genL2f_phi);
chain.SetBranchAddress("genL2f_m", &genL2f_m);
TFile *outFile = new TFile(output, "recreate");
LHAPDF::PDF* nomPdf = LHAPDF::mkPDF(292200);
//LHAPDF::PDF* nomPdf = LHAPDF::mkPDF(25100);
//LHAPDF::PDF* nomPdf = LHAPDF::mkPDF(11000);
//LHAPDF::PDF* nomPdf = LHAPDF::mkPDF(13100);
for (Int_t iPdfSet=setMin; iPdfSet<setMax+1; iPdfSet++) {
LHAPDF::PDF* testPdf = LHAPDF::mkPDF(pdfName.Data(),iPdfSet);
char histname[100];
sprintf(histname,"dEta_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dEta = new TH1D(histname, "", 20, -5, 5); dEta->Sumw2();
sprintf(histname,"dPt_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dPt = new TH1D(histname, "", 25, 25, 100); dPt->Sumw2();
sprintf(histname,"dPreBB_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dPreBB = new TH1D(histname, "", 1, 0, 2); dPreBB->Sumw2();
sprintf(histname,"dPreBE_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dPreBE = new TH1D(histname, "", 1, 0, 2); dPreBE->Sumw2();
sprintf(histname,"dPreEE_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dPreEE = new TH1D(histname, "", 1, 0, 2); dPreEE->Sumw2();
sprintf(histname,"dPostBB_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dPostBB = new TH1D(histname, "", 1, 0, 2); dPostBB->Sumw2();
sprintf(histname,"dPostBE_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dPostBE = new TH1D(histname, "", 1, 0, 2); dPostBE->Sumw2();
sprintf(histname,"dPostEE_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dPostEE = new TH1D(histname, "", 1, 0, 2); dPostEE->Sumw2();
sprintf(histname,"dTot_%s_%i",pdfName.Data(),iPdfSet);
TH1D* dTot = new TH1D(histname, "", 1, 0, 2); dTot->Sumw2();
Double_t nentries=0, nsel=0;
for (Int_t i=0; i<chain.GetEntries(); i++) {
//for (Int_t i=0; i<100; i++) {
chain.GetEntry(i);
if (!isProc(proc, genV_id, genV_m, genL1_id, genL2_id)) continue;
Int_t fid_1 = id_1;//( id_1==0 ? 21 : id_1 );
Int_t fid_2 = id_2;//( id_2==0 ? 21 : id_2 );
Double_t newWeight = weight*testPdf->xfxQ(fid_1, x_1, scalePDF)*testPdf->xfxQ(fid_2, x_2, scalePDF)/(nomPdf->xfxQ(fid_1, x_1, scalePDF)*nomPdf->xfxQ(fid_2, x_2, scalePDF));
if (fabs(nomPdf->xfxQ(fid_1, x_1, scalePDF)) < 1e-8 || fabs(nomPdf->xfxQ(fid_2, x_2, scalePDF)) < 1e-8 ) {
cout << "wtf: " << fid_1 << ", " << x_1 << ", " << scalePDF << " => " << nomPdf->xfxQ(fid_1, x_1, scalePDF) << "; ";
cout << fid_2 << ", " << x_2 << ", " << scalePDF << " => " << nomPdf->xfxQ(fid_2, x_2, scalePDF) << "; ";
cout << weight << ", " << newWeight << endl;
continue;
}
nentries+=newWeight;
dTot->Fill(1.0,newWeight);
Bool_t passBB =acceptBB(proc, genV_id, genV_m, genL1_id, genL2_id, genL1_pt, genL1_eta, genL2_pt, genL2_eta);
Bool_t passBBF=acceptBB(proc, genV_id, genVf_m, genL1_id, genL2_id, genL1f_pt, genL1f_eta, genL2f_pt, genL2f_eta);
Bool_t passBE =acceptBE(proc, genV_id, genV_m, genL1_id, genL2_id, genL1_pt, genL1_eta, genL2_pt, genL2_eta);
Bool_t passBEF=acceptBE(proc, genV_id, genVf_m, genL1_id, genL2_id, genL1f_pt, genL1f_eta, genL2f_pt, genL2f_eta);
Bool_t passEE =acceptEE(proc, genV_id, genV_m, genL1_id, genL2_id, genL1_pt, genL1_eta, genL2_pt, genL2_eta);
Bool_t passEEF=acceptEE(proc, genV_id, genVf_m, genL1_id, genL2_id, genL1f_pt, genL1f_eta, genL2f_pt, genL2f_eta);
if (passBB) dPreBB->Fill(1.0, newWeight);
else if (passBE) dPreBE->Fill(1.0, newWeight);
else if (passEE) dPreEE->Fill(1.0, newWeight);
if (passBBF) { dPostBB->Fill(1.0, newWeight); }
else if (passBEF) { dPostBE->Fill(1.0, newWeight); }
else if (passEEF) { dPostEE->Fill(1.0, newWeight); }
if (passBBF || passBEF || passEEF) {
//if (passBB || passBE || passEE) {
dEta->Fill(genVf_eta, newWeight);
dPt->Fill(genVf_pt, newWeight);
nsel+=newWeight;
}
}
cout << "------------" << endl;
Double_t acc=(dPreBB->Integral()+dPreBE->Integral()+dPreEE->Integral())/(dTot->Integral());
cout << "Pre-FSR acceptance: " << dPreBB->Integral() + dPreBE->Integral() + dPreEE->Integral() << " / " << dTot->Integral() << " = " << acc << " +/- " << sqrt(acc*(1-acc)/dTot->GetEntries()) << endl;
acc=(dPostBB->Integral()+dPostBE->Integral()+dPostEE->Integral())/(dTot->Integral());
cout << "Post-FSR acceptance: " << dPostBB->Integral()+dPostBE->Integral()+dPostEE->Integral() << " / " << dTot->Integral() << " = " << acc << " +/- " << sqrt(acc*(1-acc)/dTot->GetEntries()) << endl;
outFile->Write();
}
outFile->Close();
}