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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/Beam.hh"
#include "Rivet/Projections/FinalState.hh"
namespace Rivet {
/// @brief Add a short analysis description here
class DASP_1979_I132045 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(DASP_1979_I132045);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
// Initialise and register projections
declare(FinalState(), "FS");
// find the hists based on beam energies
int ihist=-1;
if (inRange(sqrtS()/GeV,3.6,3.67)) {
ihist=0;
}
else if (inRange(sqrtS()/GeV,3.98,4.1)) {
ihist=1;
}
else if (inRange(sqrtS()/GeV,4.1,4.24)) {
ihist=2;
}
else if (inRange(sqrtS()/GeV,4.24,4.36)) {
ihist=3;
}
else if (inRange(sqrtS()/GeV,4.36,4.46)) {
ihist=4;
}
else if (inRange(sqrtS()/GeV,4.46,4.98)) {
ihist=5;
}
else if (isCompatibleWithSqrtS(5.0)) {
ihist=6;
}
else if (isCompatibleWithSqrtS(5.2)) {
ihist=7;
}
else {
MSG_ERROR("Beam energy not supported!");
}
// Book histograms
book(_h_pi_p , 1,1,1+ihist);
book(_h_K_p , 2+ihist,1,1);
book(_h_proton_p, 10+ihist,1,1);
book(_h_pi_x , 18,1,1+ihist);
book(_h_K_x , 19+ihist,1,1);
book(_h_proton_x, 27+ihist,1,1);
}
/// Perform the per-event analysis
void analyze(const Event& event) {
for (const Particle& p : apply<FinalState>(event, "FS").particles()) {
const int id = p.abspid();
const double modp = p.p3().mod();
const double xp = 2.*modp/sqrtS();
const double beta = modp / p.E();
if(id==211) {
_h_pi_p->fill(modp);
_h_pi_x->fill(xp ,1./beta);
}
else if(id==321) {
_h_K_p->fill(modp);
_h_K_x->fill(xp ,1./beta);
}
else if(id==2212) {
_h_proton_p->fill(modp);
_h_proton_x->fill(xp ,1./beta);
}
}
}
/// Normalise histograms etc., after the run
void finalize() {
double fact = crossSection()/nanobarn/sumOfWeights();
scale(_h_pi_p ,fact);
scale(_h_K_p ,fact);
scale(_h_proton_p ,fact);
fact *= sqr(sqrtS());
scale(_h_pi_x ,fact);
scale(_h_K_x ,fact);
scale(_h_proton_x ,fact);
}
//@}
/// @name Histograms
//@{
Histo1DPtr _h_pi_p, _h_K_p, _h_proton_p;
Histo1DPtr _h_pi_x, _h_K_x, _h_proton_x;
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(DASP_1979_I132045);
}
|