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runTimeClus.cc
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#include <iostream>
#include <chrono>
#include "TFile.h"
#include "TTree.h"
#include "TMath.h"
#include "fastjet/PseudoJet.hh"
#include "fastjet/ClusterSequenceArea.hh"
#include "include/ProgressBar.h"
#include "PU14/EventMixer.hh"
#include "PU14/CmdLine.hh"
#include "PU14/PU14.hh"
#include "include/jetCollection.hh"
#include "include/softDropGroomer.hh"
#include "include/softDropCounter.hh"
#include "include/treeWriter.hh"
using namespace std;
using namespace fastjet;
// This class runs time reclustering with background
// ./runTimeClus -hard PythiaEventsTune14PtHat120.pu14 -nev 1
int main (int argc, char ** argv) {
auto start_time = std::chrono::steady_clock::now();
CmdLine cmdline(argc,argv);
// inputs read from command line
int nEvent = cmdline.value<int>("-nev",1); // first argument: command line option; second argument: default value
//bool verbose = cmdline.present("-verbose");
std::cout << "will run on " << nEvent << " events" << std::endl;
// Uncomment to silence fastjet banner
ClusterSequence::set_fastjet_banner_stream(NULL);
//to write info to root tree
treeWriter trwSig("jetTreeSig");
//Jet definition
double R = 0.5;
double ghostRapMax = 6.0;
double ghost_area = 0.005;
int active_area_repeats = 1;
fastjet::GhostedAreaSpec ghost_spec(ghostRapMax, active_area_repeats, ghost_area);
fastjet::AreaDefinition area_def = fastjet::AreaDefinition(fastjet::active_area,ghost_spec);
fastjet::JetDefinition jet_def(antikt_algorithm, R);
double jetRapMax = 100.;//3.0;
fastjet::Selector jet_selector = SelectorAbsRapMax(jetRapMax);
ProgressBar Bar(cout, nEvent);
Bar.SetStyle(-1);
EventMixer mixer(&cmdline); //the mixing machinery from PU14 workshop
// loop over events
int iev = 0;
unsigned int entryDiv = (nEvent > 200) ? nEvent / 200 : 1;
while ( mixer.next_event() && iev < nEvent )
{
// increment event number
iev++;
Bar.Update(iev);
Bar.PrintWithMod(entryDiv);
std::vector<fastjet::PseudoJet> particlesMergedAll = mixer.particles();
std::vector<double> eventWeight;
eventWeight.push_back(mixer.hard_weight());
eventWeight.push_back(mixer.pu_weight());
// extract hard partons that initiated the jets
fastjet::Selector parton_selector = SelectorVertexNumber(-1);
vector<PseudoJet> partons = parton_selector(particlesMergedAll);
// extract hard partons from first splitting
fastjet::Selector parton_selector_split = SelectorVertexNumber(-2);
vector<PseudoJet> partonsFirstSplit = parton_selector_split(particlesMergedAll);
// select final state particles from hard event only
fastjet::Selector sig_selector = SelectorVertexNumber(0);
vector<PseudoJet> particlesSig = sig_selector(particlesMergedAll);
// select final state particles from background event only
fastjet::Selector bkg_selector = SelectorVertexNumber(1);
vector<PseudoJet> particlesBkg = bkg_selector(particlesMergedAll);
vector<PseudoJet> particlesMerged = particlesBkg;
particlesMerged.insert( particlesMerged.end(), particlesSig.begin(), particlesSig.end() );
//charged particles
fastjet::Selector charged_selector = SelectorIsCharged();
vector<PseudoJet> particlesSigCh = charged_selector(particlesSig);
//std::cout << "#particles: " << particlesSig.size() << " of which charged: " << particlesSigCh.size() << std::endl;
//---------------------------------------------------------------------------
// look at first splitting of hard partons
//---------------------------------------------------------------------------
std::vector<double> drsplit;
std::vector<double> tfsplit;
double hbarc = 0.19732697;
double GeVtofm = 1./hbarc; //~5.068;
int id = 0;
for(int ip = 0; ip<partons.size(); ++ip) {
PseudoJet p = partons[ip];
PseudoJet d1 = partonsFirstSplit[id];
PseudoJet d2 = partonsFirstSplit[id+1];
double dr = d1.delta_R(d2);
drsplit.push_back(dr);
double z1 = max(d1.e(),d2.e())/p.e();
double z2 = min(d1.e(),d2.e())/p.e();
tfsplit.push_back(1./(2.*z1*z2*p.e()*GeVtofm*(1-fastjet::cos_theta(d1,d2))));
id+=2;
}
//---------------------------------------------------------------------------
// jet clustering
//---------------------------------------------------------------------------
// run the clustering, extract the signal jets
fastjet::ClusterSequenceArea csSig(particlesSig, jet_def, area_def);
jetCollection jetCollectionSig(sorted_by_pt(jet_selector(csSig.inclusive_jets(10.))));
// run the clustering, extract the signal charged jets
fastjet::ClusterSequenceArea csSigCh(particlesSigCh, jet_def, area_def);
jetCollection jetCollectionSigCh(sorted_by_pt(jet_selector(csSigCh.inclusive_jets(10.))));
//---------------------------------------------------------------------------
// Recursive Soft Drop for signal jets
//---------------------------------------------------------------------------
softDropCounter sdcSig(0.0,0.0,R,0.0);
sdcSig.setRecursiveAlgo(3);//0 = CA 1 = AKT 2 = KT 3=gen_kt t-form ordered
sdcSig.run(jetCollectionSig);
jetCollectionSig.addVector("sigJetRecur_jetpt", sdcSig.getPts());
jetCollectionSig.addVector("sigJetRecur_z", sdcSig.getZgs());
jetCollectionSig.addVector("sigJetRecur_dr12", sdcSig.getDRs());
jetCollectionSig.addVector("sigJetRecur_erad", sdcSig.getErads());
jetCollectionSig.addVector("sigJetRecur_logdr12", sdcSig.getLog1DRs());
jetCollectionSig.addVector("sigJetRecur_logztheta", sdcSig.getLogzDRs());
jetCollectionSig.addVector("sigJetRecur_tf", sdcSig.getTfs());
jetCollectionSig.addVector("sigJetRecur_tfe", sdcSig.getTfes());
jetCollectionSig.addVector("sigJetRecur_nSD", sdcSig.calculateNSD(0.0));
jetCollectionSig.addVector("sigJetRecur_zSD", sdcSig.calculateNSD(1.0));
//find closest parton for each jet
std::vector<int> partonmatch;
std::vector<double> partonmatchdr;
std::vector<fastjet::PseudoJet> sigJets = jetCollectionSig.getJet();
for(fastjet::PseudoJet p : sigJets) {
int ipmin = -1;
double drmin = 999.;
for(int ip = 0; ip<partons.size(); ++ip) {
double dr = p.delta_R(partons[ip]);
if(dr<drmin) {
drmin = dr;
ipmin = ip;
}
}
partonmatch.push_back(ipmin);
partonmatchdr.push_back(drmin);
}
jetCollectionSig.addVector("sigJetRecur_partonMatchID", partonmatch);
jetCollectionSig.addVector("sigJetRecur_partonMatchDr", partonmatchdr);
softDropCounter sdcSigzcut(0.1,0.0,R,0.0);
sdcSigzcut.setRecursiveAlgo(3);//0 = CA 1 = AKT 2 = KT 3=gen_kt t-form ordered
sdcSigzcut.run(jetCollectionSig);
jetCollectionSig.addVector("sigJetRecurZcut_jetpt", sdcSigzcut.getPts());
jetCollectionSig.addVector("sigJetRecurZcut_z", sdcSigzcut.getZgs());
jetCollectionSig.addVector("sigJetRecurZcut_dr12", sdcSigzcut.getDRs());
jetCollectionSig.addVector("sigJetRecurZcut_erad", sdcSigzcut.getErads());
jetCollectionSig.addVector("sigJetRecurZcut_logdr12", sdcSigzcut.getLog1DRs());
jetCollectionSig.addVector("sigJetRecurZcut_logztheta", sdcSigzcut.getLogzDRs());
jetCollectionSig.addVector("sigJetRecurZcut_tf", sdcSigzcut.getTfs());
jetCollectionSig.addVector("sigJetRecurZcut_tfe", sdcSigzcut.getTfes());
jetCollectionSig.addVector("sigJetRecurZcut_nSD", sdcSigzcut.calculateNSD(0.0));
jetCollectionSig.addVector("sigJetRecurZcut_zSD", sdcSigzcut.calculateNSD(1.0));
//charged jets
softDropCounter sdcSigzcutCh(0.1,0.0,R,0.0);
sdcSigzcutCh.setRecursiveAlgo(3);//0 = CA 1 = AKT 2 = KT 3=gen_kt t-form ordered
sdcSigzcutCh.run(jetCollectionSigCh);
jetCollectionSigCh.addVector("sigJetChRecurZcut_jetpt", sdcSigzcutCh.getPts());
jetCollectionSigCh.addVector("sigJetChRecurZcut_z", sdcSigzcutCh.getZgs());
jetCollectionSigCh.addVector("sigJetChRecurZcut_dr12", sdcSigzcutCh.getDRs());
jetCollectionSigCh.addVector("sigJetChRecurZcut_erad", sdcSigzcutCh.getErads());
jetCollectionSigCh.addVector("sigJetChRecurZcut_logdr12", sdcSigzcutCh.getLog1DRs());
jetCollectionSigCh.addVector("sigJetChRecurZcut_logztheta", sdcSigzcutCh.getLogzDRs());
jetCollectionSigCh.addVector("sigJetChRecurZcut_tf", sdcSigzcutCh.getTfs());
jetCollectionSigCh.addVector("sigJetChRecurZcut_tfe", sdcSigzcutCh.getTfes());
jetCollectionSigCh.addVector("sigJetChRecurZcut_nSD", sdcSigzcutCh.calculateNSD(0.0));
jetCollectionSigCh.addVector("sigJetChRecurZcut_zSD", sdcSigzcutCh.calculateNSD(1.0));
//find closest parton for each charged jet
std::vector<int> partonmatchCh;
std::vector<double> partonmatchdrCh;
std::vector<fastjet::PseudoJet> sigJetsCh = jetCollectionSigCh.getJet();
for(fastjet::PseudoJet p : sigJetsCh) {
int ipmin = -1;
double drmin = 999.;
for(int ip = 0; ip<partons.size(); ++ip) {
double dr = p.delta_R(partons[ip]);
if(dr<drmin) {
drmin = dr;
ipmin = ip;
}
}
partonmatchCh.push_back(ipmin);
partonmatchdrCh.push_back(drmin);
}
jetCollectionSigCh.addVector("sigJetChRecur_partonMatchID", partonmatchCh);
jetCollectionSigCh.addVector("sigJetChRecur_partonMatchDr", partonmatchdrCh);
//---------------------------------------------------------------------------
// write tree
//---------------------------------------------------------------------------
//Give variable we want to write out to treeWriter.
//Only vectors of the types 'jetCollection', and 'double', 'int', 'fastjet::PseudoJet' are supported
trwSig.addCollection("eventWeight", eventWeight);
trwSig.addPartonCollection("partons", partons);
trwSig.addPartonCollection("partonsFirstSplit", partonsFirstSplit);
trwSig.addDoubleCollection("drSplit", drsplit);
trwSig.addDoubleCollection("tfSplit", tfsplit);
trwSig.addCollection("sigJet", jetCollectionSig);
trwSig.addCollection("sigJetCh", jetCollectionSigCh);
trwSig.fillTree(); //signal jets
}//event loop
Bar.Update(nEvent);
Bar.Print();
Bar.PrintLine();
TFile *fout = new TFile("JetToyHIResultTimeClus.root","RECREATE");
trwSig.getTree()->Write();
fout->Write();
fout->Close();
double time_in_seconds = std::chrono::duration_cast<std::chrono::milliseconds>
(std::chrono::steady_clock::now() - start_time).count() / 1000.0;
std::cout << "runFromFile: " << time_in_seconds << std::endl;
}