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ZpTRun1.cc
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ZpTRun1.cc
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// -*- C++ -*-
//
// This is the implementation of the non-inlined, non-templated member
// functions of the ZpTRun1 class.
//
#include "ZpTRun1.h"
#include "ThePEG/Interface/Reference.h"
#include "ThePEG/Interface/Parameter.h"
#include "ThePEG/EventRecord/Particle.h"
#include "ThePEG/EventRecord/Event.h"
#include "ThePEG/PDT/EnumParticles.h"
#include "ThePEG/PDT/ParticleData.h"
#include "ThePEG/PDF/BeamParticleData.h"
#include "ThePEG/Interface/ClassDocumentation.h"
#include "ThePEG/Persistency/PersistentOStream.h"
#include "ThePEG/Persistency/PersistentIStream.h"
#include "Herwig++/Utilities/Histogram.h"
using namespace Herwig;
using namespace ThePEG;
using namespace std;
inline IBPtr ZpTRun1::clone() const {
return new_ptr(*this);
}
inline IBPtr ZpTRun1::fullclone() const {
return new_ptr(*this);
}
void ZpTRun1::doinitrun() {
//Z pt run I CDF data from
vector<double> bins, data, error;
//50 data points
double vals1[] = { 0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0,
5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10., 10.5,
11., 11.5, 12., 13., 14., 15., 16., 17., 18., 19., 20.,
22., 24., 26., 28., 30., 34., 38., 42., 46., 50., 60.,
70., 80., 90., 100.,125.,150.,200., };
double data1[] = {3.35, 10.1, 14.8, 19.4, 20.2, 23.6, 23.6, 23, 19.9, 19.3,
17.9, 18, 14.6, 14.5, 13.5, 13.7, 11.9, 10.4, 11.1, 9.56,
8.35, 7.82, 8.18, 7.48, 7.21, 6.05, 4.73, 5.21, 4.46,
4.28, 3.51, 3.01, 2.63, 1.82, 1.85, 1.58, 1.41, 1.02,
0.678, 0.644, 0.434, 0.394, 0.21, 0.107, 0.091, 0.045,
0.0351, 0.0181, 0.00711, 0.000974 };
double error1[] = { 0.54, 1, 1.2, 1.4, 1.4, 1.5, 1.4, 1.4, 1.3, 1.2, 1.2,
1.2, 1, 1, 1, 1, 0.9, 0.9, 0.9, 0.82, 0.76, 0.74, 0.76,
0.72, 0.53, 0.47, 0.41, 0.44, 0.4, 0.39, 0.35, 0.33,
0.22, 0.18, 0.17, 0.17, 0.16, 0.1, 0.079, 0.076, 0.062,
0.059, 0.027, 0.019, 0.0175, 0.0122, 0.0107, 0.0048,
0.00297, 0.000756 };
bins = vector<double>(vals1 ,vals1 +51);
data = vector<double>(data1 ,data1 +50);
error = vector<double>(error1,error1+50);
_hpt = new_ptr( Histogram( bins, data, error ) );
}
void ZpTRun1::persistentOutput(PersistentOStream & ) const {
}
void ZpTRun1::persistentInput(PersistentIStream & , int) {
}
ClassDescription<ZpTRun1> ZpTRun1::initZpTRun1;
// Definition of the static class description member.
void ZpTRun1::Init() {
static ClassDocumentation<ZpTRun1> documentation
("There is no documentation for the ZpTRun1 class");
}
void ZpTRun1::dofinish() {
AnalysisHandler::dofinish();
string fname = generator()->filename() + string("-") + name() + string(".top");
ofstream outfile(fname.c_str());
using namespace HistogramOptions;
_hpt->normaliseToData();
_hpt->topdrawOutput(outfile,Frame|Errorbars|Ylog,
"RED",
"pT of Z ( mass 60 GeV to 116 GeV ) compared to CDF run I data",
" ",
"1/SdS/dpT",
" G G ",
"pT",
" ");
outfile.close();
}
void ZpTRun1::analyze(tEventPtr event, long , int loop, int state) {
if ( loop > 0 || state != 0 || !event ) return;
transform(event);
// find the outgoing particles in the hard process
ParticleVector outgoing;
event->selectFinalState(back_inserter(outgoing));
ParticleVector Zdecay;
// search for electrons and positions from Z/gamma
for(unsigned int ix=0;ix<outgoing.size();++ix) {
int id=outgoing[ix]->id();
if(abs(id)==ParticleID::eminus) {
PPtr part=outgoing[ix];
do {
part=part->parents()[0];
}
while (part->id()==id);
if(part->id()==ParticleID::gamma||part->id()==ParticleID::Z0)
Zdecay.push_back(outgoing[ix]);
}
}
if(Zdecay.size()!=2) return;
Lorentz5Momentum pZ=Zdecay[0]->momentum()+Zdecay[1]->momentum();
pZ.rescaleMass();
if(pZ.mass()<66.*GeV||pZ.mass()>116.*GeV) return;
Energy pt=pZ.perp();
*_hpt += pt/GeV;
// remove leptons from outgoing particles
for(unsigned int ix=0;ix<Zdecay.size();++ix) {
ParticleVector::iterator pit=find(outgoing.begin(),outgoing.end(),Zdecay[ix]);
if(pit!=outgoing.end()) outgoing.erase(pit);
}
}

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