int main(int argc, char **argv)
{
TROOT root("pythia","run pythia");
// CONSTANT
if( argc < 3 ){
std::cout<<Form("usage : ./%s <output> <random_seed>",argv[0])<<std::endl;
exit(1);
}
char *outFile = argv[1];
Int_t random_seed = atoi(argv[2]);
TFile *fout = new TFile(outFile,"recreate");
// Generator.
Pythia pythia;
// Shorthand for some public members of pythia (also static ones).
Event& event = pythia.event;
//ParticleDataTable& pdt = pythia.particleData;
Info& info = pythia.info;
// Read in commands from external file.
pythia.readFile("main03.cmnd");
// Extract settings to be used in the main program.
int nEvent = pythia.mode("Main:numberOfEvents");
int nList = pythia.mode("Main:numberToList");
int nShow = pythia.mode("Main:timesToShow");
bool showCS = pythia.flag("Main:showChangedSettings");
//bool showCPD = pythia.flag("Main:showChangedParticleData");
pythia.readString(Form("Random:seed=%d",random_seed));
// Initialize. Beam parameters set in .cmnd file.
pythia.init();
// List changed data.
if (showCS) pythia.settings.listChanged();
//if (showCPD) pdt.listChanged();
// Book histograms.
TH1D *pThard = new TH1D("pThard","process pT scale", 100, 0., 200.); pThard->Sumw2();
TH1D *mult = new TH1D("mult","charged particle multiplicity", 100, -0.5, 799.5);mult->Sumw2();
TH1D *dndy = new TH1D("dndy","dn/dy for charged particles", 100, -10., 10.);dndy->Sumw2();
TH1D *dndpT_hadron = new TH1D("dndpT_hadron","dn/dpT for charged particles", 500, 0., 50.);dndpT_hadron->Sumw2();
TH1D *dndpT_pion = new TH1D("dndpT_pion","dn/dpT for pions", 500, 0., 50.);dndpT_pion->Sumw2();
TH1D *dndpT_kaon = new TH1D("dndpT_kaon","dn/dpT for kaons", 500, 0., 50.);dndpT_kaon->Sumw2();
TH1D *dndpT_proton = new TH1D("dndpT_proton","dn/dpT for protons", 500, 0., 50.);dndpT_proton->Sumw2();
TH1D *dndpT_antiproton = new TH1D("dndpT_antiproton","dn/dpT for antiprotons", 500, 0., 50.);dndpT_antiproton->Sumw2();
TH1D *dndpT_k0s = new TH1D("dndpT_k0s","dn/dpT for k0s", 500, 0., 50.);dndpT_k0s->Sumw2();
TH1D *dndpT_infly_hadron = new TH1D("dndpT_infly_hadron","dn/dpT for charged particles", 500, 0., 50.);dndpT_infly_hadron->Sumw2();
TH1D *dndpT_infly_pion = new TH1D("dndpT_infly_pion","dn/dpT for pions", 500, 0., 50.);dndpT_infly_pion->Sumw2();
TH1D *dndpT_infly_kaon = new TH1D("dndpT_infly_kaon","dn/dpT for kaons", 500, 0., 50.);dndpT_infly_kaon->Sumw2();
TH1D *dndpT_infly_proton = new TH1D("dndpT_infly_proton","dn/dpT for protons", 500, 0., 50.);dndpT_infly_proton->Sumw2();
TH1D *dndpT_infly_antiproton = new TH1D("dndpT_infly_antiproton","dn/dpT for antiprotons", 500, 0., 50.);dndpT_infly_antiproton->Sumw2();
TH1D *dndpT_hadron_mid = new TH1D("dndpT_hadron_mid","dn/dpT for charged particles |eta|<0.35", 500, 0., 50.);dndpT_hadron_mid->Sumw2();
TH1D *dndpT_pion_mid = new TH1D("dndpT_pion_mid","dn/dpT for pions |eta|<0.35", 500, 0., 50.);dndpT_pion_mid->Sumw2();
TH1D *dndpT_kaon_mid = new TH1D("dndpT_kaon_mid","dn/dpT for kaon |eta|<0.35", 500, 0., 50.);dndpT_kaon_mid->Sumw2();
TH1D *dndpT_proton_mid = new TH1D("dndpT_proton_mid","dn/dpT for proton |eta|<0.35", 500, 0., 50.);dndpT_proton_mid->Sumw2();
TH1D *dndpT_antiproton_mid = new TH1D("dndpT_antiproton_mid","dn/dpT for antiproton |eta|<0.35", 500, 0., 50.);dndpT_antiproton_mid->Sumw2();
TH1D *dndpT_infly_hadron_mid = new TH1D("dndpT_infly_hadron_mid","dn/dpT for charged particles |eta|<0.35", 500, 0., 50.);dndpT_infly_hadron_mid->Sumw2();
TH1D *dndpT_infly_pion_mid = new TH1D("dndpT_infly_pion_mid","dn/dpT for pions |eta|<0.35", 500, 0., 50.);dndpT_infly_pion_mid->Sumw2();
TH1D *dndpT_infly_kaon_mid = new TH1D("dndpT_infly_kaon_mid","dn/dpT for kaon |eta|<0.35", 500, 0., 50.);dndpT_infly_kaon_mid->Sumw2();
TH1D *dndpT_infly_proton_mid = new TH1D("dndpT_infly_proton_mid","dn/dpT for proton |eta|<0.35", 500, 0., 50.);dndpT_infly_proton_mid->Sumw2();
TH1D *dndpT_infly_antiproton_mid = new TH1D("dndpT_infly_antiproton_mid","dn/dpT for antiproton |eta|<0.35", 500, 0., 50.);dndpT_infly_antiproton_mid->Sumw2();
TH1D *dndpT_k0s_mid = new TH1D("dndpT_k0s_mid","dn/dpT for k0s |eta|<0.35", 500, 0., 50.);dndpT_k0s_mid->Sumw2();
TStopwatch timer;
timer.Start();
// Begin event loop.
int nPace = max(1, nEvent / max(1, nShow) );
for (int iEvent = 0; iEvent < nEvent; ++iEvent) {
if (nShow > 0 && iEvent%nPace == 0)
cout << " Now begin event " << iEvent << endl;
// Generate events. Quit if failure.
if (!pythia.next()) {
cout << " Event generation aborted prematurely, owing to error!\n";
break;
}
// List first few events, both info, hard process and complete events.
if (iEvent < nList) {
info.list();
pythia.process.list();
event.list();
}
// Fill hard scale of event.
pThard->Fill( info. pTHat() );
// Loop over final charged particles in the event.
int nCharged = 0;
for (int i = 0; i < event.size(); ++i) {
// for k0s
if (event[i].id()==310 ) dndpT_k0s->Fill(event[i].pT());
if(event[i].eta()>-0.35&&event[i].eta()<0.35) {
if (event[i].id()==310 ) dndpT_k0s_mid->Fill(event[i].pT());
}
// Infly decay
dndpT_infly_hadron->Fill( event[i].pT() );
if (event[i].id()==211 || event[i].id()==-211 ) dndpT_infly_pion->Fill(event[i].pT());
if (event[i].id()==321 || event[i].id()==-321 ) dndpT_infly_kaon->Fill(event[i].pT());
if (event[i].id()==2212) dndpT_infly_proton->Fill(event[i].pT());
if (event[i].id()==-2212 ) dndpT_infly_antiproton->Fill(event[i].pT());
if(event[i].eta()>-0.35&&event[i].eta()<0.35) {
dndpT_infly_hadron_mid->Fill( event[i].pT() );
if (event[i].id()==211 || event[i].id()==-211 ) dndpT_infly_pion_mid->Fill(event[i].pT());
if (event[i].id()==321 || event[i].id()==-321 ) dndpT_infly_kaon_mid->Fill(event[i].pT());
if (event[i].id()==2212) dndpT_infly_proton_mid->Fill(event[i].pT());
if (event[i].id()==-2212) dndpT_infly_antiproton_mid->Fill(event[i].pT());
}
// hadron in final state
if (event[i].isFinal()&&event[i].isCharged()) {
dndpT_hadron->Fill( event[i].pT() );
if (event[i].id()==211 || event[i].id()==-211 ) dndpT_pion->Fill(event[i].pT());
if (event[i].id()==321 || event[i].id()==-321 ) dndpT_kaon->Fill(event[i].pT());
if (event[i].id()==2212) dndpT_proton->Fill(event[i].pT());
if (event[i].id()==-2212 ) dndpT_antiproton->Fill(event[i].pT());
}
if(event[i].isFinal()&&event[i].isCharged()&&event[i].eta()>-0.35&&event[i].eta()<0.35) {
dndpT_hadron_mid->Fill( event[i].pT() );
if (event[i].id()==211 || event[i].id()==-211 ) dndpT_pion_mid->Fill(event[i].pT());
if (event[i].id()==321 || event[i].id()==-321 ) dndpT_kaon_mid->Fill(event[i].pT());
if (event[i].id()==2212) dndpT_proton_mid->Fill(event[i].pT());
if (event[i].id()==-2212) dndpT_antiproton_mid->Fill(event[i].pT());
}
// Analyze charged particles and fill histograms.
if(event[i].isFinal()&&event[i].isCharged()) {
++nCharged;
dndy->Fill( event[i].y() );
}
// End of particle and event loops. Fill charged multiplicity.
}
mult->Fill( nCharged );
}
// Final statistics. Normalize and output histograms.
pythia.statistics();
timer.Stop(); timer.Print();
fout->cd();
pThard->Write();
mult->Write();
dndy->Write();
dndpT_hadron->Write();
dndpT_pion->Write();
dndpT_kaon->Write();
dndpT_proton->Write();
dndpT_antiproton->Write();
dndpT_infly_hadron->Write();
dndpT_infly_pion->Write();
dndpT_infly_kaon->Write();
dndpT_infly_proton->Write();
dndpT_infly_antiproton->Write();
dndpT_k0s->Write();
dndpT_hadron_mid->Write();
dndpT_pion_mid->Write();
dndpT_kaon_mid->Write();
dndpT_proton_mid->Write();
dndpT_antiproton_mid->Write();
dndpT_infly_hadron_mid->Write();
dndpT_infly_pion_mid->Write();
dndpT_infly_kaon_mid->Write();
dndpT_infly_proton_mid->Write();
dndpT_infly_antiproton_mid->Write();
dndpT_k0s_mid->Write();
fout->Write();
fout->Close();
// Done.
return 0;
}
int main(int argc, char* argv[]) {
if (argc < 3) {
cerr << " Unexpected number of command-line arguments. \n You are"
<< " expected to provide a number of events and an output file. \n"
<< "By default, this executable generates events wil 800<m(ff)<100"
<< " and no Z'."
<< "To generate a Z', pass a positive value of Z' mass:"
<< " -massZp=MASSVALUE"
<< "To extend the mass range:"
<< " -mMin=MinMass"
<< " -mMax=MaxMass"
<< " Program stopped! " << endl;
return 1;
}
int Nevents = 0;
sscanf(argv[1],"%i",&Nevents);
string hepmcout(string(argv[2])+".hepmc");
float energy = 14000.;
float mMin = 80.;
float mMax = 100;
float massZp = -99.;
for (int i=1;i<argc;i++){
if (strncmp(argv[i],"-setEnergy=",11)==0) sscanf(argv[i],"-setEnergy=%f",&energy);
if (strncmp(argv[i],"-massZp=",8)==0) {
sscanf(argv[i],"-massZp=%f",&massZp);
cout << "WARNING: gamma*/Z/Z' (with Z'mass " << massZp << ") will be generated" << endl;
} else {
cout << "WARNING: gamma*/Z will be generated" << endl;
}
if (strncmp(argv[i],"-mMin=",5)==0) sscanf(argv[i],"-mMin=%f",&mMin);
if (strncmp(argv[i],"-mMax=",5)==0) sscanf(argv[i],"-mMax=%f",&mMax);
}
// Interface for conversion from Pythia8::Event to HepMC one.
HepMC::I_Pythia8 ToHepMC;
// Specify file where HepMC events will be stored.
HepMC::IO_GenEvent ascii_io(hepmcout.c_str(), std::ios::out);
// Generator.
Pythia pythia;
char command[512];
if(massZp<0.) {
pythia.readString("WeakSingleBoson:ffbar2gmZ = on");
sprintf(command, "PhaseSpace:mHatMin = %f", mMin);
pythia.readString(command);
sprintf(command, "PhaseSpace:mHatMax = %f", mMax);
pythia.readString(command);
} else {
pythia.readString("NewGaugeBoson:ffbar2gmZZprime = on ! full gamma*/Z^0/Z'^0 production");
sprintf(command, "32:m0 = 1000. ! Z' mass", massZp);
pythia.readString(command);
sprintf(command, "32:mMin = %f ", mMin);
pythia.readString(command);
sprintf(command, "32:mMax = %f ", mMax);
pythia.readString(command);
}
// setup energy
pythia.init(2212, 2212, energy);
// List settings.
pythia.settings.listChanged();
// List particle data.
pythia.particleData.listChanged();
for (int iEvent = 0; iEvent < Nevents; ++iEvent) {
if (!pythia.next()) continue;
// Construct new empty HepMC event.
HepMC::GenEvent* hepmcevt = new HepMC::GenEvent();
// Fill HepMC event, including PDF info.
ToHepMC.fill_next_event( pythia, hepmcevt );
// Write the HepMC event to file. Done with it.
ascii_io << hepmcevt;
delete hepmcevt;
// End of event loop.
}
// Give statistics.
pythia.statistics();
// run Delphes
string OUTPUT_ATLAS = string(argv[2])+"_DelphesATLAS.root";
string OUTPUT_CMS = string(argv[2])+"_DelphesCMS.root";
system(string(string("echo ")+string(hepmcout)+string(" >> ")+string(hepmcout)+string(".list")).c_str());
system(string(string("cd Delphes; ./Delphes ")+string(hepmcout)+string(".list ")+OUTPUT_ATLAS+string(" data/DetectorCard_ATLAS.dat data/TriggerCard_ATLAS.dat")).c_str());
system(string(string("cd Delphes; ./Delphes ")+string(hepmcout)+string(".list ")+OUTPUT_CMS+string(" data/DetectorCard_CMS.dat data/TriggerCard_CMS.dat")).c_str());
system(string(string("rm ")+string(hepmcout)+string(".list")).c_str());
// Done.
return 0;
}
