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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/JetShape.hh"
#include "Rivet/Projections/FastJets.hh"
namespace Rivet {
/// @brief D0 Run-1 jet shapes measurement
class D0_1995_I398175 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(D0_1995_I398175);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
const FinalState fs((Cuts::etaIn(-4.0, 4.0)));
declare(fs, "FS");
// FastJets jets(fs, FastJets::ANTIKT, 0.6);
FastJets jets(fs, FastJets::D0ILCONE, 1.0);
jets.useInvisibles();
declare(jets, "Jets");
// Specify jets pT bins
_ptedges = {{ 45.0, 70.0, 105.0, 140.0, 1800.0}};
// Book histograms
for (size_t ptbin = 0; ptbin < 4; ++ptbin) {
_jsnames_pT[ptbin] = "JetShape" + to_str(ptbin) ;
const JetShape jsp(jets, 0.0, 1.0, 10, _ptedges[ptbin], _ptedges[ptbin+1], 0.0, 0.2, PSEUDORAPIDITY);
declare(jsp, _jsnames_pT[ptbin]);
book( _h_Rho_pT_central[ptbin] ,ptbin+1, 1, 1);
}
const JetShape jspfwd0(jets, 0.0, 1.0, 10, 45, 70, 2.5, 3.5, PSEUDORAPIDITY);
declare(jspfwd0, "JetShapeFwd0");
const JetShape jspfwd1(jets, 0.0, 1.0, 10, 70, 105, 2.5, 3.5, PSEUDORAPIDITY);
declare(jspfwd1, "JetShapeFwd1");
book( _h_Rho_pT_forward[0] ,5, 1, 1);
book( _h_Rho_pT_forward[1] ,6, 1, 1);
}
/// Perform the per-event analysis
void analyze(const Event& event) {
// Get jets and require at least one to pass pT and y cuts
const Jets jets = apply<FastJets>(event, "Jets").jetsByPt(Cuts::ptIn(_ptedges.front()*GeV, _ptedges.back()*GeV) );
MSG_DEBUG("Selecting jets with pT> "<<_ptedges.front());
MSG_DEBUG("Jet multiplicity before cuts = " << jets.size());
if (jets.size() == 0){
MSG_DEBUG("No jets found in required pT and rapidity range");
vetoEvent;
}
// Calculate and histogram jet shapes
for (size_t ipt = 0; ipt < 4; ++ipt) {
const JetShape& jsipt = apply<JetShape>(event, _jsnames_pT[ipt]);
for (size_t ijet = 0; ijet < jsipt.numJets(); ++ijet) {
for (size_t rbin = 0; rbin < jsipt.numBins(); ++rbin) {
const double r_rho = jsipt.rBinMid(rbin);
MSG_DEBUG(ipt << " " << rbin << " (" << r_rho << ") " << jsipt.diffJetShape(ijet, rbin));
/// @note Bin width Jacobian factor of 0.7/0.1 = 7 in the differential shapes plot
// _profhistRho_pT[ipt]->fill(r_rho/0.7, (0.7/0.1)*jsipt.diffJetShape(ijet, rbin));
const double r_Psi = jsipt.rBinMax(rbin);
MSG_DEBUG(ipt << " " << rbin << " (" << r_rho << ") " << jsipt.intJetShape(ijet, rbin));
_h_Rho_pT_central[ipt]->fill(r_Psi/1.0, jsipt.intJetShape(ijet, rbin));
}
}
}
const JetShape& jsiptfwd0 = apply<JetShape>(event, "JetShapeFwd0");
for (size_t ijet = 0; ijet < jsiptfwd0.numJets(); ++ijet) {
for (size_t rbin = 0; rbin < jsiptfwd0.numBins(); ++rbin) {
const double r_Psi = jsiptfwd0.rBinMax(rbin);
_h_Rho_pT_forward[0]->fill(r_Psi/1.0, jsiptfwd0.intJetShape(ijet, rbin));
}
}
const JetShape& jsiptfwd1 = apply<JetShape>(event, "JetShapeFwd1");
for (size_t ijet = 0; ijet < jsiptfwd1.numJets(); ++ijet) {
for (size_t rbin = 0; rbin < jsiptfwd1.numBins(); ++rbin) {
const double r_Psi = jsiptfwd1.rBinMax(rbin);
_h_Rho_pT_forward[1]->fill(r_Psi/1.0, jsiptfwd1.intJetShape(ijet, rbin));
}
}
}
/// Normalise histograms etc., after the run
void finalize() {
// scale(_h_YYYY, crossSection()/sumOfWeights()); // norm to cross section
// normalize(_h_YYYY); // normalize to unity
}
//@}
private:
vector<double> _ptedges;
string _jsnames_pT[4];
/// @name Histograms
//@{
Profile1DPtr _h_Rho_pT_central[4];
Profile1DPtr _h_Rho_pT_forward[2];
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(D0_1995_I398175);
}
|