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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/ChargedFinalState.hh"
#include "Rivet/Projections/Beam.hh"
namespace Rivet {
/// @brief Add a short analysis description here
class TPC_1988_I262143 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(TPC_1988_I262143);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
declare(Beam(), "Beams");
declare(ChargedFinalState(), "FS");
// Book histograms
book(_h_z_pi ,1, 1, 1);
book(_h_z_K ,1, 1, 2);
book(_h_z_p ,1, 1, 3);
book(_h_z_all,1, 1, 4);
book(_h_z2_pi, 5, 1, 1);
book(_h_z2_K , 5, 1, 2);
book(_h_z2_p , 5, 1, 3);
book(_n_pi,"TMP/n_pi", refData(6,1,1));
book(_n_K ,"TMP/n_K" , refData(6,1,2));
book(_n_p ,"TMP/n_p" , refData(6,1,3));
book(_d_pi,"TMP/d_pi", refData(6,1,1));
book(_d_K ,"TMP/d_K" , refData(6,1,2));
book(_d_p ,"TMP/d_p" , refData(6,1,3));
book(_n2_K,"TMP/n2_K", refData(7,1,1));
book(_n2_p,"TMP/n2_p", refData(7,1,2));
book(_n3_p,"TMP/n3_p", refData(7,1,3));
book(_d2_K,"TMP/d2_K", refData(7,1,1));
book(_d2_p,"TMP/d2_p", refData(7,1,2));
book(_d3_p,"TMP/d3_p", refData(7,1,3));
}
/// Perform the per-event analysis
void analyze(const Event& event) {
// First, veto on leptonic events by requiring at least 4 charged FS particles
const FinalState& fs = apply<FinalState>(event, "FS");
const size_t numParticles = fs.particles().size();
// Even if we only generate hadronic events, we still need a cut on numCharged >= 2.
if (numParticles < 2) {
MSG_DEBUG("Failed leptonic event cut");
vetoEvent;
}
MSG_DEBUG("Passed leptonic event cut");
// Get beams and average beam momentum
const ParticlePair& beams = apply<Beam>(event, "Beams").beams();
const double meanBeamMom = ( beams.first.p3().mod() +
beams.second.p3().mod() ) / 2.0;
MSG_DEBUG("Avg beam momentum = " << meanBeamMom);
for (const Particle& p : fs.particles()) {
double xP = p.p3().mod()/meanBeamMom;
_h_z_all->fill(xP);
_d_pi->fill(xP);
_d_K ->fill(xP);
_d_p ->fill(xP);
int id = abs(p.pid());
if(id==211) {
_h_z_pi->fill(xP);
_h_z2_pi->fill(xP, xP);
_n_pi ->fill(xP, 100.);
_d2_K->fill(xP);
_d2_p->fill(xP);
_d3_p->fill(xP);
}
else if(id==321) {
_h_z_K ->fill(xP);
_h_z2_K ->fill(xP, xP);
_n_K ->fill(xP, 100.);
_n2_K->fill(xP);
_d3_p->fill(xP);
}
else if(id==2212) {
_h_z_p ->fill(xP);
_h_z2_p ->fill(xP, xP);
_n_p ->fill(xP, 100.);
_n2_p->fill(xP);
_n3_p->fill(xP);
}
}
}
/// Normalise histograms etc., after the run
void finalize() {
scale(_h_z_all,1./sumOfWeights());
scale(_h_z_pi ,1./sumOfWeights());
scale(_h_z_K ,1./sumOfWeights());
scale(_h_z_p ,1./sumOfWeights());
scale(_h_z2_pi ,1./sumOfWeights());
scale(_h_z2_K ,1./sumOfWeights());
scale(_h_z2_p ,1./sumOfWeights());
Scatter2DPtr temp1,temp2,temp3,temp4,temp5,temp6;
book(temp1,6, 1, 1);
book(temp2,6, 1, 2);
book(temp3,6, 1, 3);
book(temp4,7, 1, 1);
book(temp5,7, 1, 2);
book(temp6,7, 1, 3);
divide(_n_pi,_d_pi, temp1);
divide(_n_K ,_d_K , temp2);
divide(_n_p ,_d_p , temp3);
divide(_n2_K,_d2_K, temp4);
divide(_n2_p,_d2_p, temp5);
divide(_n3_p,_d3_p, temp6);
}
//@}
/// @name Histograms
//@{
Histo1DPtr _h_z_all,_h_z_pi,_h_z_K,_h_z_p;
Histo1DPtr _h_z2_pi,_h_z2_K,_h_z2_p;
Histo1DPtr _n_pi,_n_K,_n_p,_d_pi,_d_K,_d_p;
Histo1DPtr _n2_K,_n2_p,_n3_p,_d2_K,_d2_p,_d3_p;
//@}2
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(TPC_1988_I262143);
}
|