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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FinalState.hh"
namespace Rivet {
/// @brief Add a short analysis description here
class GAMMAGAMMA_1981_I158474 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(GAMMAGAMMA_1981_I158474);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
// Initialise and register projections
declare(FinalState(), "FS");
book(_n3pi, "TMP/n3pi");
book(_n4pi, "TMP/n4pi");
book(_n5pi, "TMP/n5pi");
book(_n6pi, "TMP/n6pi");
book(_n35pi, "TMP/n35pi");
book(_n46pi, "TMP/n46pi");
book(_nC2, "TMP/nC2");
book(_nC4, "TMP/nC4");
book(_nmu, "TMP/nmu");
}
/// Perform the per-event analysis
void analyze(const Event& event) {
const FinalState& fs = apply<FinalState>(event, "FS");
map<long,int> nCount;
int ntotal(0);
for (const Particle& p : fs.particles()) {
nCount[p.pid()] += 1;
++ntotal;
}
// mu+mu- + photons
if(nCount[-13]==1 and nCount[13]==1 &&
ntotal==2+nCount[22])
_nmu->fill();
else {
if(ntotal==3 && nCount[211] == 1 && nCount[-211]==1 && nCount[111]==1 ) {
_n3pi->fill();
}
if(ntotal==4 && nCount[211] == 1 && nCount[-211]==1 && nCount[111]==2 ) {
_n4pi->fill();
}
if(ntotal==5 && nCount[211] == 2 && nCount[-211]==2 && nCount[111]==1 ) {
_n5pi->fill();
}
if(ntotal==6 && nCount[211] == 2 && nCount[-211]==2 && nCount[111]==2 ) {
_n6pi->fill();
}
if(nCount[211] == 1 && nCount[-211]==1 && ntotal == 2+nCount[111]) {
_nC2->fill();
}
if(nCount[211] == 2 && nCount[-211]==2 && ntotal == 4+nCount[111]) {
_nC4->fill();
}
if((nCount[211]+nCount[-211]+nCount[111])==ntotal ) {
if(ntotal==3 || ntotal ==5)
_n35pi->fill();
else if(ntotal==4 || ntotal==6)
_n46pi ->fill();
}
}
}
/// Normalise histograms etc., after the run
void finalize() {
double fact = crossSection()/ sumOfWeights() /nanobarn;
for(unsigned int ix=1;ix<7;++ix) {
double sigma = 0.0, error = 0.0;
if(ix==1) {
sigma = _n3pi->val()*fact;
error = _n3pi->err()*fact;
}
else if(ix==2) {
sigma = _n4pi->val()*fact;
error = _n4pi->err()*fact;
}
else if(ix==3) {
sigma = _n5pi->val()*fact;
error = _n5pi->err()*fact;
}
else if(ix==4) {
sigma = _n6pi->val()*fact;
error = _n6pi->err()*fact;
}
else if(ix==5) {
sigma = _n35pi->val()*fact;
error = _n35pi->err()*fact;
}
else if(ix==6) {
sigma = _n46pi->val()*fact;
error = _n46pi->err()*fact;
}
Scatter2D temphisto(refData(1, 1, ix));
Scatter2DPtr mult;
book(mult, 1, 1, ix);
for (size_t b = 0; b < temphisto.numPoints(); b++) {
const double x = temphisto.point(b).x();
pair<double,double> ex = temphisto.point(b).xErrs();
pair<double,double> ex2 = ex;
if(ex2.first ==0.) ex2. first=0.0001;
if(ex2.second==0.) ex2.second=0.0001;
if (inRange(sqrtS()/GeV, x-ex2.first, x+ex2.second)) {
mult->addPoint(x, sigma, ex, make_pair(error,error));
}
else {
mult->addPoint(x, 0., ex, make_pair(0.,.0));
}
}
}
for(unsigned int ix=1;ix<3;++ix) {
Scatter1D R = (ix==1? *_nC2 : *_nC4)/ *_nmu;
double rval = R.point(0).x();
pair<double,double> rerr = R.point(0).xErrs();
double sig_h = (ix ==1 ? _nC2 : _nC4)->val()*fact;
double err_h = (ix ==1 ? _nC2 : _nC4)->err()*fact;
double sig_m = _nmu->val()*fact;
double err_m = _nmu->err()*fact;
Scatter2D temphisto(refData(2, 1, ix));
std::ostringstream title;
if(ix==1)
title << "sigma_2pi";
else
title << "sigma_4pi";
Scatter2DPtr hadrons;
book(hadrons, title.str());
Scatter2DPtr muons;
book(muons, "sigma_muons");
Scatter2DPtr mult;
book(mult, 2,1,ix);
for (size_t b = 0; b < temphisto.numPoints(); b++) {
const double x = temphisto.point(b).x();
pair<double,double> ex = temphisto.point(b).xErrs();
pair<double,double> ex2 = ex;
if(ex2.first ==0.) ex2. first=0.0001;
if(ex2.second==0.) ex2.second=0.0001;
if (inRange(sqrtS()/GeV, x-ex2.first, x+ex2.second)) {
mult ->addPoint(x, rval, ex, rerr);
hadrons->addPoint(x, sig_h, ex, make_pair(err_h,err_h));
if(ix==1) muons ->addPoint(x, sig_m, ex, make_pair(err_m,err_m));
}
else {
mult ->addPoint(x, 0., ex, make_pair(0.,.0));
hadrons->addPoint(x, 0., ex, make_pair(0.,.0));
if(ix==1) muons ->addPoint(x, 0., ex, make_pair(0.,.0));
}
}
}
}
//@}
/// @name Histograms
//@{
CounterPtr _n3pi,_n4pi,_n5pi,_n6pi,_n35pi,_n46pi,_nC2,_nC4,_nmu;
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(GAMMAGAMMA_1981_I158474);
}
|