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DetectorFastSim.cc
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// -*- C++ -*-
#include "Rivet/Rivet.hh"
#include "Rivet/RivetAIDA.hh"
#include "Rivet/Tools/Logging.hh"
#include "Rivet/Math/MathUtils.hh"
#include "Rivet/Projections/VetoedFinalState.hh"
#include "Rivet/Projections/FastJets.hh"
#include "Rivet/Projections/ChargedFinalState.hh"
#include "Rivet/Projections/ChargedLeptons.hh"
#include "Rivet/Projections/InvMassFinalState.hh"
#include "HepMC/Units.h"
#include "DetectorFastSim.hh"
namespace Rivet {
DetectorFastSim::DetectorFastSim() :
m_param_B_field(4.0),
m_param_indet_eta_coverage(2.5),
m_param_calo_eta_coverage(5.0),
m_param_calo_eta_crack(1.2),
m_param_calo_cells_eta(500),
m_param_calo_cells_phi(500),
m_param_calo_em_res_const(0.0044),
m_param_calo_em_res_sqrtE(0.024),
m_param_calo_had_res_sqrtE(0.8),
m_param_calo_etmiss_res(0.2),
m_param_jet_ptmin(20.),
m_param_calo_jet_aperture(0.4),
m_param_calo_jet_algorithm(FastJets::SISCONE)
{
setBeams(PROTON, PROTON);
setNeedsCrossSection(false);
}
DetectorFastSim::DetectorFastSim(const double B_field = 4.0,
const double indet_eta_coverage = 2.5,
const double calo_eta_coverage = 5.0,
const double calo_eta_crack = 1.2,
const unsigned int calo_cells_eta = 500,
const unsigned int calo_cells_phi = 500,
const double calo_em_res_const = 0.0044,
const double calo_em_res_sqrtE = 0.024,
const double calo_had_res_sqrtE = 0.8,
const double calo_etmiss_res = 0.2,
const double jet_ptmin = 20.,
const double jet_aperture = 0.4,
const FastJets::JetAlgName jet_algorithm = FastJets::SISCONE
) :
m_param_B_field(B_field),
m_param_indet_eta_coverage(indet_eta_coverage),
m_param_calo_eta_coverage(calo_eta_coverage),
m_param_calo_eta_crack(calo_eta_crack),
m_param_calo_cells_eta(calo_cells_eta),
m_param_calo_cells_phi(calo_cells_phi),
m_param_calo_em_res_const(calo_em_res_const),
m_param_calo_em_res_sqrtE(calo_em_res_sqrtE),
m_param_calo_had_res_sqrtE(calo_had_res_sqrtE),
m_param_calo_etmiss_res(calo_etmiss_res),
m_param_jet_ptmin(jet_ptmin),
m_param_calo_jet_aperture(jet_aperture),
m_param_calo_jet_algorithm(jet_algorithm)
{
setBeams(PROTON, PROTON);
setNeedsCrossSection(false);
}
//////////////////////////////////////////////////////
void DetectorFastSim::init()
{
Log log = getLog();
log << Log::DEBUG << "Initializing detector" << endl;
///Open output ROOT file
string outname = tree().storeName();
outname = outname.substr( 0, outname.size() - 5 ); //get rid of .aida
outname = outname + ".root";
m_outfile = new TFile(outname.c_str(), "RECREATE");
log << Log::INFO << "Outfile " << outname << " opened" << endl;
m_tree = new TTree("events", "Events");
/** ele */
m_fs_ele_pt = new vector<double>;
m_fs_ele_eta = new vector<double>;
m_fs_ele_phi = new vector<double>;
m_fs_ele_iso = new vector<double>;
m_fs_ele_matched = new vector<int>;
m_truth_ele_pt = new vector<double>;
m_truth_ele_eta = new vector<double>;
m_truth_ele_phi = new vector<double>;
/** muons */
m_fs_mu_pt = new vector<double>;
m_fs_mu_eta = new vector<double>;
m_fs_mu_phi = new vector<double>;
m_fs_mu_iso = new vector<double>;
m_fs_mu_matched = new vector<int>;
m_truth_mu_pt = new vector<double>;
m_truth_mu_eta = new vector<double>;
m_truth_mu_phi = new vector<double>;
/** taus */
/** jets */
m_raw_jets_pt = new vector<double>;
m_raw_jets_eta = new vector<double>;
m_raw_jets_phi = new vector<double>;
m_fs_jets_pt = new vector<double>;
m_fs_jets_eta = new vector<double>;
m_fs_jets_phi = new vector<double>;
m_fs_jets_matched = new vector<int>;
m_fs_jets_tag = new vector<int>;
m_fs_jets_tagweight = new vector<double>;
m_truth_jets_pt = new vector<double>;
m_truth_jets_eta = new vector<double>;
m_truth_jets_phi = new vector<double>;
// Add tree branches
m_tree->Branch("reco_raw_jets_n", &m_raw_jets_n, "reco_raw_jets_n/i");
m_tree->Branch("reco_raw_jets_pt", m_raw_jets_pt);
m_tree->Branch("reco_raw_jets_eta", m_raw_jets_eta);
m_tree->Branch("reco_raw_jets_phi", m_raw_jets_phi);
m_tree->Branch("reco_jets_n", &m_fs_jets_n, "reco_jets_n/i");
m_tree->Branch("reco_jets_pt", m_fs_jets_pt);
m_tree->Branch("reco_jets_eta", m_fs_jets_eta);
m_tree->Branch("reco_jets_phi", m_fs_jets_phi);
m_tree->Branch("reco_jets_matched", m_fs_jets_matched);
m_tree->Branch("reco_jets_tag", m_fs_jets_tag);
m_tree->Branch("reco_jets_tagweight", m_fs_jets_tagweight);
m_tree->Branch("reco_bjets_n", &m_fs_bjets_n, "reco_bjets_n/i");
m_tree->Branch("reco_tjets_n", &m_fs_tjets_n, "reco_tjets_n/i");
m_tree->Branch("truth_jets_n", &m_truth_jets_n, "truth_jets_n/i");
m_tree->Branch("truth_jets_pt", m_truth_jets_pt);
m_tree->Branch("truth_jets_eta", m_truth_jets_eta);
m_tree->Branch("truth_jets_phi", m_truth_jets_phi);
/** ele */
m_tree->Branch("reco_ele_n", &m_fs_ele_n, "reco_ele_n/i");
m_tree->Branch("reco_ele_pt", m_fs_ele_pt);
m_tree->Branch("reco_ele_eta", m_fs_ele_eta);
m_tree->Branch("reco_ele_phi", m_fs_ele_phi);
m_tree->Branch("reco_ele_iso", m_fs_ele_iso);
m_tree->Branch("reco_ele_matched", m_fs_ele_matched);
m_tree->Branch("truth_ele_n", &m_truth_ele_n, "truth_ele_n/i");
m_tree->Branch("truth_ele_pt", m_truth_ele_pt);
m_tree->Branch("truth_ele_eta", m_truth_ele_eta);
m_tree->Branch("truth_ele_phi", m_truth_ele_phi);
/** muon */
m_tree->Branch("reco_mu_n", &m_fs_mu_n, "reco_mu_n/i");
m_tree->Branch("reco_mu_pt", m_fs_mu_pt);
m_tree->Branch("reco_mu_eta", m_fs_mu_eta);
m_tree->Branch("reco_mu_phi", m_fs_mu_phi);
m_tree->Branch("reco_mu_iso", m_fs_mu_iso);
m_tree->Branch("reco_mu_matched", m_fs_mu_matched);
m_tree->Branch("truth_mu_n", &m_truth_mu_n, "truth_mu_n/i");
m_tree->Branch("truth_mu_pt", m_truth_mu_pt);
m_tree->Branch("truth_mu_eta", m_truth_mu_eta);
m_tree->Branch("truth_mu_phi", m_truth_mu_phi);
/** MissingEt */
m_tree->Branch("reco_etmiss_px", &m_fs_etmiss_px, "reco_etmiss_px/d");
m_tree->Branch("reco_etmiss_py", &m_fs_etmiss_py, "reco_etmiss_py/d");
m_tree->Branch("reco_calo_met", &m_fs_calo_met, "reco_calo_met/d");
m_tree->Branch("reco_etmiss_pt", &m_fs_etmiss_pt, "reco_etmiss_pt/d");
m_tree->Branch("reco_etmiss_phi", &m_fs_etmiss_phi, "reco_etmiss_phi/d");
m_tree->Branch("reco_sumet", &m_fs_sumet, "reco_sumet/d");
m_tree->Branch("truth_etmiss_px", &m_truth_etmiss_px, "truth_etmiss_px/d");
m_tree->Branch("truth_etmiss_py", &m_truth_etmiss_py, "truth_etmiss_py/d");
m_tree->Branch("truth_etmiss_pt", &m_truth_etmiss_pt, "truth_etmiss_pt/d");
m_tree->Branch("truth_etmiss_phi", &m_truth_etmiss_phi, "truth_etmiss_phi/d");
m_tree->Branch("truth_sumet", &m_truth_sumet, "truth_sumet/d");
/** trigger */
m_tree->Branch("trig_e10", &m_trig_e10, "trig_e10/b");
m_tree->Branch("trig_e20", &m_trig_e20, "trig_e20/b");
m_tree->Branch("trig_e30", &m_trig_e30, "trig_e30/b");
m_tree->Branch("trig_mu10", &m_trig_mu10, "trig_e10/b");
m_tree->Branch("trig_mu20", &m_trig_mu20, "trig_mu20/b");
m_tree->Branch("trig_mu30", &m_trig_mu30, "trig_mu30/b");
m_tree->Branch("trig_xe20", &m_trig_xe20, "trig_xe20/b");
m_tree->Branch("trig_xe30", &m_trig_xe30, "trig_xe30/b");
m_tree->Branch("trig_xe50", &m_trig_xe50, "trig_xe50/b");
m_tree->Branch("trig_xe100", &m_trig_xe100, "trig_xe100/b");
m_tree->Branch("trig_4j20", &m_trig_4j20, "trig_4j20/b");
m_tree->Branch("trig_2j40", &m_trig_2j40, "trig_2j40/b");
m_tree->Branch("trig_3j40", &m_trig_3j40, "trig_3j40/b");
m_tree->Branch("trig_2j100", &m_trig_2j100, "trig_2j100/b");
//Init calorimeter cells
//Use eta X phi space
m_calo_cells_eta_width = m_param_calo_eta_coverage / m_param_calo_cells_eta;
m_calo_cells_phi_width = 2 * 3.1415 / m_param_calo_cells_phi;
log << Log::INFO << "Calorimeter cells (" << m_calo_cells_eta_width
<< " X " << m_calo_cells_phi_width << ")" << endl;
/*
for( unsigned int eta = 0 ; eta < 2 * m_param_calo_cells_eta ; ++eta ) {
std::vector< double > eta_row( m_param_calo_cells_phi, 0.0 );
m_calo_em.push_back( eta_row );
m_calo_had.push_back( eta_row );
}
*/
m_calo_em = new TH2F("calo_em", "EM Calorimeter",
2*m_param_calo_cells_eta, -m_param_calo_eta_coverage, m_param_calo_eta_coverage,
m_param_calo_cells_phi, 0.0, 2*3.1415 );
m_calo_had = new TH2F("calo_had", "Had Calorimeter",
2*m_param_calo_cells_eta, -m_param_calo_eta_coverage, m_param_calo_eta_coverage,
m_param_calo_cells_phi, 0.0, 2*3.1415 );
/// build final states
FinalState fs(-5, 5, 0.5);
addProjection(fs, "FS");
FinalState fs_barrel(-2.5, 2.5);
addProjection(fs_barrel, "FSBARREL");
//charged f.s. particles
const ChargedFinalState cfs(fs);
addProjection(cfs, "ChFS");
const ChargedLeptons chlep(cfs);
addProjection(chlep, "ChLEP");
//no neutrinos
//VetoedFinalState vfs_visible( FinalState(-5, 5, 0.5) );
VetoedFinalState vfs_visible( fs );
vfs_visible
.addVetoPairId(NU_E)
.addVetoPairId(NU_MU)
.addVetoPairId(NU_TAU)
.addVetoId(1000022); // LSP
addProjection(vfs_visible, "VFSVISIBLE");
//make a fs with no W decay products - for jet clustering
std::vector<std::pair<long,long> > vids;
vids.push_back(make_pair(ELECTRON, NU_EBAR) );
vids.push_back(make_pair(POSITRON, NU_E) );
vids.push_back(make_pair(MUON, NU_MUBAR) );
vids.push_back(make_pair(ANTIMUON, NU_MU) );
InvMassFinalState invfs(fs_barrel, vids, 65*GeV, 95*GeV);
addProjection(invfs, "INVFS");
//VetoedFinalState vfs_noW(fs_barrel);
VetoedFinalState vfs_noW(fs);
vfs_noW.addVetoOnThisFinalState(invfs);
addProjection(vfs_noW, "VFSNOW");
/** set jet definition */
if ( m_param_calo_jet_algorithm == FastJets::KT) {
m_jet_def = fastjet::JetDefinition(fastjet::kt_algorithm, m_param_calo_jet_aperture, fastjet::E_scheme);
}
else if ( m_param_calo_jet_algorithm == FastJets::SISCONE) {
const double OVERLAP_THRESHOLD = 0.75;
m_jet_plugin.reset(new fastjet::SISConePlugin(m_param_calo_jet_aperture, OVERLAP_THRESHOLD));
m_jet_def = fastjet::JetDefinition( m_jet_plugin.get() );
}
// Trigger stuff
m_param_trigger_jet_prescale = 10; // fire 1 event every N
}
//////////////////////////////////////////////////////
double DetectorFastSim::rand01()
{
boost::mt19937 rng(43);
static boost::uniform_01<boost::mt19937> zeroone(rng);
return zeroone();
}
double DetectorFastSim::norm01()
{
boost::lagged_fibonacci19937 engine;
static boost::normal_distribution<double> norm_dist(0.0, 1.0);
return norm_dist.operator() <boost::lagged_fibonacci19937>((engine));
}
bool DetectorFastSim::inCrack(const double& eta)
{
return ( fabs( fabs(eta) - m_param_calo_eta_crack ) < 0.1 );
}
unsigned int DetectorFastSim::get_eta_index(const double& eta)
{
//double eta_shifted = eta + m_param_calo_eta_coverage ;
//return (int)( 1 + eta_shifted / m_calo_cells_eta_width );
//static double eta_min = -(m_param_calo_cells_eta / 2) * m_calo_cells_eta_width;
//static double eta_max = -eta_min;
unsigned int eta_index = 0;
//if( eta > eta_min && eta < eta_max ) {
eta_index = (unsigned int)( (eta + m_param_calo_eta_coverage )/ m_calo_cells_eta_width + 0.5 );
if( eta_index > 2*m_param_calo_cells_eta ) eta_index = 1;
else if( eta_index < 0 ) eta_index = 1;
//}
return eta_index;
}
unsigned int DetectorFastSim::get_phi_index(const double& phi)
{
// return (int)( 1 + phi / m_calo_cells_phi_width );
unsigned int phi_index = (unsigned int)( phi / m_calo_cells_phi_width + 0.5 );
if( phi_index > m_param_calo_cells_phi ) phi_index -= m_param_calo_cells_phi;
else if( phi_index < 0 ) phi_index += m_param_calo_cells_phi;
return phi_index;
}
double DetectorFastSim::get_true_eta(const int& index)
{
//static const double WEIRD_DIFF = 0.000000000000001;
// static double eta_min = - ( m_param_calo_cells_eta / 2 ) * m_calo_cells_eta_width;
//return eta_min + m_calo_cells_eta_width/2. + (double)(index-1)*m_calo_cells_eta_width;
double eta = ( (index * m_calo_cells_eta_width) - m_param_calo_eta_coverage);
// if( fabs(eta) < WEIRD_DIFF || fabs(eta - m_param_calo_eta_coverage) < WEIRD_DIFF ) eta = 0.0;
return eta;
}
double DetectorFastSim::get_true_phi(const int& index)
{
return m_calo_cells_phi_width/2. + (double)( (index-1)*m_calo_cells_phi_width);
//return ( index * m_calo_cells_phi_width );
}
double DetectorFastSim::getTowerIsolationSum(const double& eta, const double& phi)
{
Log log = getLog();
//return energy in 3x3 cells around given (eta,phi), except seed energy
const unsigned int seed_eta_bin = get_eta_index(eta);
const unsigned int seed_phi_bin = get_phi_index(phi);
//log << Log::DEBUG << "seed: (eta,phi)=(" << eta << ", " << phi << ")=("
// << seed_eta_bin << ", " << seed_phi_bin << ") " << endl;
unsigned int phi_left = seed_phi_bin > 1 ? seed_phi_bin - 1 : m_param_calo_cells_phi;
//if( phi_left < 1 ) phi_left = m_param_calo_cells_phi;
unsigned int phi_right = seed_phi_bin < m_param_calo_cells_phi ? seed_phi_bin + 1 : 1;
//if( phi_right > m_param_calo_cells_phi ) phi_right = 1;
//look up true eta
const double true_eta_up = get_true_eta( seed_eta_bin + 1 );
const double true_eta_down = get_true_eta( seed_eta_bin - 1 );
const double theta_up = 2 * atan( exp(-1*true_eta_up) );
const double theta_seed = 2 * atan( exp(-1*eta) );
const double theta_down = 2 * atan( exp(-1*true_eta_down) );
const double s_up = sin(theta_up);
const double s_seed = sin(theta_seed);
const double s_down = sin(theta_down);
//upper row
const double Eul = m_calo_em->GetBinContent(seed_eta_bin + 1, phi_left)
+ m_calo_had->GetBinContent(seed_eta_bin + 1, phi_left);
const double Euc = m_calo_em->GetBinContent(seed_eta_bin + 1, seed_phi_bin)
+ m_calo_had->GetBinContent(seed_eta_bin + 1, seed_phi_bin);
const double Eur = m_calo_em->GetBinContent(seed_eta_bin + 1, phi_right)
+ m_calo_had->GetBinContent(seed_eta_bin + 1, phi_right);
//center row - SKIP SEED BIN!
const double Ecl = m_calo_em->GetBinContent(seed_eta_bin, phi_left)
+ m_calo_had->GetBinContent(seed_eta_bin, phi_left);
const double Ecc = 0.0;
//m_calo_em->GetBinContent(seed_eta_bin, seed_phi_bin)
// + m_calo_had->GetBinContent(seed_eta_bin, seed_phi_bin);
//log << Log::DEBUG << " * seed E=" << Ecc << " ET=" << Ecc * s_seed << endl;
const double Ecr = m_calo_em->GetBinContent(seed_eta_bin , phi_right)
+ m_calo_had->GetBinContent(seed_eta_bin, phi_right);
//lower row
const double Edl = m_calo_em->GetBinContent(seed_eta_bin - 1, phi_left)
+ m_calo_had->GetBinContent(seed_eta_bin - 1, phi_left);
const double Edc = m_calo_em->GetBinContent(seed_eta_bin - 1, seed_phi_bin)
+ m_calo_had->GetBinContent(seed_eta_bin - 1, seed_phi_bin);
const double Edr = m_calo_em->GetBinContent(seed_eta_bin - 1, phi_right)
+ m_calo_had->GetBinContent(seed_eta_bin - 1, phi_right);
const double sum = s_up * ( Eul + Euc + Eur )
+ s_seed * ( Ecl + Ecc + Ecr )
+ s_down * ( Edl + Edc + Edr );
return sum;
}
double DetectorFastSim::getTrackPtSum(const double& eta, const double& phi, const double& cone)
{
double ptsum = 0.0;
int trk_found = 0;
foreach(const FourMomentum& track, m_indet_tracks) {
if( track.pT() < 0.5 ) continue;
const double dR = sqrt( pow( eta - track.eta(),2 ) + pow( phi - track.phi(),2 ) );
if( dR > cone ) continue;
++trk_found;
ptsum += track.pT();
}
//if( trk_found == 0 ) ptsum = 100000000;
return ptsum;
}
double DetectorFastSim::getCaloSumEnergy(const double& eta, const double& phi, const double& cone)
{
double SumE = 0.0;
foreach( const FourMomentum& tower, m_calo_tracks ) {
const double dR = deltaR( eta, phi, tower );
if( dR > cone ) continue;
SumE += tower.E();
}
return SumE;
}
//////////////////////////////////////////////////////
void DetectorFastSim::clear() {
//reset tracker
m_indet_tracks.clear();
m_calo_tracks.clear();
//reset calorimeters
/*for( unsigned int eta = 0 ; eta < 2 * m_param_calo_cells_eta ; ++eta ) {
m_calo_em[eta].clear();
m_calo_had[eta].clear();
}*/
// m_calo_em->Clear();
//m_calo_had->Clear();
m_calo_em->Reset();
m_calo_had->Reset();
//electrons
m_fs_ele.clear();
m_fs_ele_n = 0;
m_fs_ele_pt->clear();
m_fs_ele_eta->clear();
m_fs_ele_phi->clear();
m_fs_ele_iso->clear();
m_fs_ele_matched->clear();
m_truth_ele.clear();
m_truth_ele_n = 0;
m_truth_ele_pt->clear();
m_truth_ele_eta->clear();
m_truth_ele_phi->clear();
//gamma
m_fs_gamma.clear();
//muons
m_fs_mu.clear();
m_fs_mu_n = 0;
m_fs_mu_pt->clear();
m_fs_mu_eta->clear();
m_fs_mu_phi->clear();
m_fs_mu_iso->clear();
m_fs_mu_matched->clear();
m_truth_mu.clear();
m_truth_mu_n = 0;
m_truth_mu_pt->clear();
m_truth_mu_eta->clear();
m_truth_mu_phi->clear();
//jets
m_truth_bquarks.clear();
m_truth_taus.clear();
m_raw_jets.clear();
m_raw_jets_n = 0;
m_raw_jets_pt->clear();
m_raw_jets_eta->clear();
m_raw_jets_phi->clear();
m_fs_jets.clear();
m_fs_jets_n = 0;
m_fs_jets_pt->clear();
m_fs_jets_eta->clear();
m_fs_jets_phi->clear();
m_fs_jets_matched->clear();
m_fs_jets_tag->clear();
m_fs_jets_tagweight->clear();
m_fs_bjets_n = 0;
m_fs_tjets_n = 0;
m_fs_bjets.clear();
m_fs_tjets.clear();
m_truth_jets.clear();
m_truth_jets_n = 0;
m_truth_jets_pt->clear();
m_truth_jets_eta->clear();
m_truth_jets_phi->clear();
m_fs_etmiss_px = 0.0;
m_fs_etmiss_py = 0.0;
m_fs_calo_met = 0.0;
m_fs_etmiss_pt = 0.0;
m_fs_etmiss_phi = 0.0;
m_fs_sumet = 0.0;
m_truth_etmiss_px = 0.0;
m_truth_etmiss_py = 0.0;
m_truth_etmiss_pt = 0.0;
m_truth_etmiss_phi = 0.0;
m_truth_sumet = 0.0;
m_trigger_chains.clear();
m_trig_e10 = false;
m_trig_e20 = false;
m_trig_e30 = false;
m_trig_mu10 = false;
m_trig_mu20 = false;
m_trig_mu30 = false;
m_trig_xe20 = false;
m_trig_xe30 = false;
m_trig_xe50 = false;
m_trig_xe100 = false;
m_trig_4j20 = false;
m_trig_2j40 = false;
m_trig_3j40 = false;
m_trig_2j100 = false;
}
//////////////////////////////////////////////////////
void DetectorFastSim::analyze(const Event& event) {
Log log = getLog();
clear();
bool status = false;
//const FinalState& fs = applyProjection<FinalState>(event, "FS");
const VetoedFinalState& fs = applyProjection<VetoedFinalState>(event, "VFSVISIBLE");
if (fs.isEmpty()) {
log << Log::INFO << "Empty event!" << endl;
return; // skip if empty!
}
status = doTruth(event);
if(!status) {
log << Log::INFO << "Impossible to find truth particles" << endl;
return;
}
status = findTracks(event);
if(!status) {
log << Log::INFO << "Impossible to find inner detector tracks" << endl;
return;
}
status = fillCalo(event);
if(!status) {
log << Log::INFO << "Impossible to fill calorimeter cells" << endl;
return;
}
status = findClusters();
if(!status) {
log << Log::INFO << "Impossible to find clusters" << endl;
return;
}
status = findElectrons();
if(!status) {
log << Log::INFO << "Impossible to find electrons" << endl;
return;
}
status = findMuons(event);
if(!status) {
log << Log::INFO << "Impossible to find muons" << endl;
return;
}
status = doOverlapRemoval();
if(!status) {
log << Log::INFO << "Impossible to apply overlap removal" << endl;
return;
}
status = doTagging();
if(!status) {
log << Log::INFO << "Impossible to tag jets" << endl;
return;
}
status = calculateMissingET();
if(!status) {
log << Log::INFO << "Impossible to calculate ETmiss" << endl;
return;
}
status = applyTrigger();
if(!status) {
log << Log::INFO << "Impossible to apply trigger" << endl;
return;
}
m_tree->Fill();
return;
}
//////////////////////////////////////
void DetectorFastSim::finalize() {
Log log = getLog();
log << Log::INFO << "Finalizing simulation" << endl;
/////////////////////////////////////
// Print Stats //
/////////////////////////////////////
//foreach(FourMomentum& track, m_indet_tracks) {
// log << Log::INFO << "Q = " << track.t() << " pT = " << track.perp() << endl;
// }
m_outfile->Write();
m_outfile->Close();
//delete m_outfile;
//delete m_tree;
}
//////////////////////////////////////
bool DetectorFastSim::doTruth(const Event& event)
{
Log log = getLog();
log << Log::DEBUG << "Finding Truth Objets" << endl;
bool status = true;
//b quarks
for (GenEvent::particle_const_iterator p = event.genEvent().particles_begin();
p != event.genEvent().particles_end(); ++p) {
//++np;
//if( np > 100 ) break;
const GenVertex* pv = (*p)->production_vertex();
//const GenVertex* dv = (*p)->end_vertex();
const int status = (*p)->status();
const int apid = abs( (*p)->pdg_id() );
if( apid == 5 || apid == 15 ) {
//avoid double counting due to self-decay
bool selfdecay = false;
if(pv) {
for (GenVertex::particles_in_const_iterator pp = pv->particles_in_const_begin() ;
pp != pv->particles_in_const_end() ; ++pp) {
// Avoid double counting if particle == parent
if ( apid == (*pp)->pdg_id() )
selfdecay = true;
}
}
if(!selfdecay) {
if( apid == 5 )
m_truth_bquarks.push_back( Particle(*(*p)) );
else if( apid == 15 )
m_truth_taus.push_back( Particle(*(*p)) );
}
}
else if(apid == 12 || apid == 14 || apid == 16) {
// Neutrinos = Missing ET source
if( status != 1 ) continue;
const double theta = (*p)->momentum().theta();
m_truth_sumet += (*p)->momentum().e() * cos( theta );
m_truth_etmiss_px += (*p)->momentum().px();
m_truth_etmiss_py += (*p)->momentum().py();
}
}
log << Log::DEBUG << " * Truth: b quarks N = " << m_truth_bquarks.size() << endl;
log << Log::DEBUG << " * Truth: tau leptons N = " << m_truth_taus.size() << endl;
m_truth_etmiss_pt = sqrt( pow(m_truth_etmiss_px,2) + pow(m_truth_etmiss_py,2) );
m_truth_etmiss_phi = atan2( m_truth_etmiss_px, m_truth_etmiss_py );
log << Log::DEBUG << " * Truth: ETmiss = " << m_truth_etmiss_pt << endl;
//Charged Leptons
const ChargedLeptons chlep = applyProjection<ChargedLeptons>(event, "ChLEP");
const ParticleVector allLeptons = chlep.chargedLeptons();
std::string l_name = "";
foreach(const Particle& lept, allLeptons ) {
if( lept.momentum().pT() > 10.*GeV ) {
const double eta = lept.momentum().eta();
const double phi = lept.momentum().phi();
const double pt = lept.momentum().pT();
const int apid = abs( lept.pdgId() );
if( apid == 11 ) {
m_truth_ele.push_back( lept );
m_truth_ele_pt->push_back( pt );
m_truth_ele_eta->push_back( eta );
m_truth_ele_phi->push_back( phi );
l_name = "ele";
}
else if( apid == 13 ) {
m_truth_mu.push_back( lept );
m_truth_mu_pt->push_back( pt );
m_truth_mu_eta->push_back( eta );
m_truth_mu_phi->push_back( phi );
l_name = "mu";
}
log << Log::DEBUG << " * Truth: "<< l_name << ": (" << eta << ", " << phi << ") pT=" << pt << endl;
}
}
//Jets
const VetoedFinalState& vfs = applyProjection<VetoedFinalState>(event, "VFSNOW");
addProjection( FastJets(vfs, m_param_calo_jet_algorithm, m_param_calo_jet_aperture), "Jets" );
const FastJets& fastjets = applyProjection<FastJets>(event, "Jets");
const Jets all_jets = fastjets.jetsByPt( m_param_jet_ptmin ); //20.GeV
foreach(const Jet& j, all_jets) {
const double eta = j.momentum().eta();
const double phi = j.momentum().phi();
const double pt = j.momentum().pT();
bool overlap = false;
foreach(const Particle& ele, m_truth_ele) {
const double ele_eta = ele.momentum().eta();
const double ele_phi = ele.momentum().phi();
const double dR = sqrt( pow( eta - ele_eta, 2) + pow( phi - ele_phi, 2 ) );
if( dR < 0.3 ) {
log << Log::DEBUG << "e/j overlap" << endl;
overlap = true;
break;
}
}
if(!overlap) {
log << Log::DEBUG << " * Truth: jet: (" << eta << ", " << phi << ") pT=" << pt << endl;
m_truth_jets.push_back( j );
m_truth_jets_pt->push_back( pt );
m_truth_jets_eta->push_back( eta );
m_truth_jets_phi->push_back( phi );
}
}
log << Log::DEBUG << " * Truth : found " << m_truth_jets.size() << " jets" << endl;
return status;
}
//////////////////////////////////////
bool DetectorFastSim::findTracks(const Event& event)
{
Log log = getLog();
log << Log::DEBUG << "Finding Tracks" << endl;
bool status = true;
const ChargedFinalState& fs = applyProjection<ChargedFinalState>(event, "ChFS");
if (fs.isEmpty()) {
return false; // skip if empty!
}
unsigned int all_tracks = 0;
unsigned int missed_tracks = 0;
ParticleVector particles = fs.entities();
foreach(const Particle& particle, particles) {
double trk_pt = particle.momentum().pT();
if( trk_pt < 1.0 ) continue;
++all_tracks;
//apply efficiency.
if( rand01() > 0.98 ) {
++missed_tracks;
continue;
}
const double tantheta = tan( particle.momentum().theta() );
double charge = PID::threeCharge( particle.pdgId() ) / 3.0;
//smear momentum;
//calculate radius of curvature
double radius = trk_pt / (0.3 * m_param_B_field );
//remove tracks that curl up
if( radius <= (m_param_indet_eta_coverage / 2.0 ) + 0.01 ) continue;
//calculate sagitta
const double sinphi = (m_param_indet_eta_coverage / 2.0) / radius;
double sagitta = radius - radius * sqrt( 1.0 - sinphi*sinphi );
//smear sagitta
double sagitta_new = sagitta + 0.000013 * norm01();
//check if smearing changed charge, too
if( sagitta * sagitta_new < 0.0 ) charge = -1.0 * charge;
sagitta = sagitta_new;
//update back radius
radius = sagitta/2.0 + pow(m_param_indet_eta_coverage, 2) / (8.0 * sagitta);
//update back pT
trk_pt = radius * ( 0.3 * m_param_B_field );
//change px, py but keep pz
double trk_px = trk_pt * cos( particle.momentum().phi() );
double trk_py = trk_pt * sin( particle.momentum().phi() );
double trk_pz = trk_pt / tantheta;
FourMomentum smeared_p( charge, trk_px, trk_py, trk_pz );
m_indet_tracks.push_back( smeared_p );
}
log << Log::DEBUG << "InDet: found " << m_indet_tracks.size() << " charged tracks" << endl;
log << Log::DEBUG << "Missed tracks / All Tracks = "
<< missed_tracks << " / " << all_tracks << endl;
return status;
}
//////////////////////////////////////
bool DetectorFastSim::fillCalo(const Event& event)
{
Log log = getLog();
log << Log::DEBUG << "Filling Calorimeter Cells" << endl;
bool status = true;
m_fs_etmiss_pt = 0.0;
m_fs_etmiss_phi = 0.0;
m_fs_sumet = 0.0;
const VetoedFinalState& fs = applyProjection<VetoedFinalState>(event, "VFSVISIBLE");
if (fs.isEmpty()) {
return false; // skip if empty!
}
ParticleVector particles = fs.entities();
//log << Log::DEBUG << "Looping over " << particles.size() << endl;
foreach( Particle& particle, particles ) {
const double pT = particle.momentum().pT();
if( pT < 0.5 ) continue; //particle doesn't reach calo surface
const double eta = particle.momentum().eta();
if( fabs(eta) > m_param_calo_eta_coverage ) continue;
const double phi = particle.momentum().phi();
const int apid = abs( particle.pdgId() );
if( apid == 11 && inCrack(eta) ) continue;
if( apid == 13 && pT < 1.0 ) continue;
double E = particle.momentum().t();
double e_em = 0.0;
double e_had = 0.0;
//Is it EM? e, gamma, pi0, eta
if( apid == 11 || apid == 22 || apid == 111 || apid == 221 ) {
e_em = ECAL_FRAC * E;
e_had = ( 1 - ECAL_FRAC ) * E;
//calculate resolution
e_em += e_em * m_param_calo_em_res_const * norm01() +
sqrt(e_em) * m_param_calo_em_res_sqrtE * norm01();
if(e_em < 0.0) e_em = 0.0;
e_had += sqrt(e_had) * m_param_calo_had_res_sqrtE * norm01();
if(e_had < 0.0) e_had = 0.0;
} // end EM particle
else if( apid == 13 ) {
double mu_e_em = 0.5 + norm01() * 0.1;
if( mu_e_em < 0.0 ) mu_e_em = 0.0;
e_em = 0.0;
if( E > mu_e_em ) {
e_em = mu_e_em;
E -= mu_e_em;
}
else {
e_em = E;
E = 0.0;
}
double mu_e_had = 2.0 + norm01() * 0.4;
if( mu_e_had < 0.0 ) mu_e_had = 0.0;
e_had = 0.0;
if( E > mu_e_had ) {
e_had = mu_e_had;
E -= mu_e_had;
}
else {
e_had = E;
E = 0.0;
}
} // end muon
else {
//must be hadronic
double ecal_frac = 0.25 + 0.05 * norm01();
if( ecal_frac < 0.0 ) ecal_frac = 0.0;
else if( ecal_frac > 1.0 ) ecal_frac = 1.0;
//apply resolution
if( rand01() < 0.5 ) {
e_em = 0.5 + 0.1 * norm01();
if( e_em > E ) ecal_frac = 1.0;
else if( e_em < 0.0 ) ecal_frac = 0.0;
else ecal_frac = e_em / E;
}