[5b822e5] | 1 |
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| 2 | /** \class Hector
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| 3 | *
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| 4 | * Propagates candidates using Hector library.
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| 5 | *
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| 6 | * $Date$
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| 7 | * $Revision$
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| 8 | *
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| 9 | *
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| 10 | * \author P. Demin - UCL, Louvain-la-Neuve
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| 11 | *
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| 12 | */
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| 13 |
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| 14 | #include "modules/Hector.h"
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| 15 |
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| 16 | #include "classes/DelphesClasses.h"
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| 17 | #include "classes/DelphesFactory.h"
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| 18 | #include "classes/DelphesFormula.h"
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| 19 |
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| 20 | #include "ExRootAnalysis/ExRootResult.h"
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| 21 | #include "ExRootAnalysis/ExRootFilter.h"
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| 22 | #include "ExRootAnalysis/ExRootClassifier.h"
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| 23 |
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| 24 | #include "TMath.h"
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| 25 | #include "TString.h"
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| 26 | #include "TFormula.h"
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| 27 | #include "TRandom3.h"
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| 28 | #include "TObjArray.h"
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| 29 | #include "TDatabasePDG.h"
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| 30 | #include "TLorentzVector.h"
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| 31 |
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| 32 | #include <algorithm>
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| 33 | #include <stdexcept>
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| 34 | #include <iostream>
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| 35 | #include <sstream>
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| 36 |
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| 37 | #include "Hector/H_BeamLine.h"
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| 38 | #include "Hector/H_RecRPObject.h"
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| 39 | #include "Hector/H_BeamParticle.h"
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| 40 |
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| 41 | using namespace std;
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| 42 |
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| 43 | //------------------------------------------------------------------------------
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| 44 |
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| 45 | Hector::Hector() :
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| 46 | fBeamLine(0), fItInputArray(0)
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| 47 | {
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| 48 | }
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| 49 |
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| 50 | //------------------------------------------------------------------------------
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| 51 |
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| 52 | Hector::~Hector()
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| 53 | {
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| 54 | }
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| 55 |
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| 56 | //------------------------------------------------------------------------------
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| 57 |
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| 58 | void Hector::Init()
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| 59 | {
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| 60 | // read Hector parameters
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| 61 |
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| 62 | fDirection = GetInt("Direction", 1);
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| 63 | fBeamLineLength = GetDouble("BeamLineLength", 430.0);
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| 64 | fDistance = GetDouble("Distance", 420.0);
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| 65 | fSigmaE = GetDouble("SigmaE", 0.0);
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| 66 | fSigmaX = GetDouble("SigmaX", 0.0);
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| 67 | fSigmaY = GetDouble("SigmaY", 0.0);
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| 68 | fEtaMin = GetDouble("EtaMin", 5.0);
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| 69 |
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| 70 | fBeamLine = new H_BeamLine(fDirection, fBeamLineLength + 0.1);
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| 71 | fBeamLine->fill(GetString("BeamLineFile", "examples/LHCB1IR5_5TeV.tfs"), fDirection, "IP5" );
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| 72 | fBeamLine->offsetElements(120, -0.097*fDirection);
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| 73 | fBeamLine->calcMatrix();
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| 74 |
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| 75 | // import input array
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| 76 |
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| 77 | fInputArray = ImportArray(GetString("InputArray", "ParticlePropagator/stableParticles"));
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| 78 | fItInputArray = fInputArray->MakeIterator();
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| 79 |
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| 80 | // create output array
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| 81 |
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| 82 | fOutputArray = ExportArray(GetString("OutputArray", "stableParticles"));
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| 83 | }
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| 84 |
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| 85 | //------------------------------------------------------------------------------
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| 86 |
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| 87 | void Hector::Finish()
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| 88 | {
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| 89 | if(fItInputArray) delete fItInputArray;
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| 90 | if(fBeamLine) delete fBeamLine;
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| 91 | }
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| 92 |
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| 93 | //------------------------------------------------------------------------------
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| 94 |
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| 95 | void Hector::Process()
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| 96 | {
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| 97 | Candidate *candidate, *mother;
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| 98 | Double_t pz;
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| 99 | Double_t x, y, z, tx, ty;
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| 100 |
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| 101 | fItInputArray->Reset();
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| 102 | while((candidate = static_cast<Candidate*>(fItInputArray->Next())))
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| 103 | {
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| 104 | const TLorentzVector &candidatePosition = candidate->Position;
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| 105 | const TLorentzVector &candidateMomentum = candidate->Momentum;
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| 106 | pz = candidateMomentum.Pz();
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| 107 |
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| 108 | if(candidateMomentum.Eta() <= fEtaMin || fDirection*pz <= 0.0) continue;
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| 109 |
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| 110 | x = 1.0E3 * candidatePosition.X();
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| 111 | y = 1.0E3 * candidatePosition.Y();
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| 112 | z = 1.0E-2 * candidatePosition.Z();
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| 113 |
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| 114 | // tx = 1.0E6 * TMath::ATan(candidateMomentum.Px()/pz);
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| 115 | // ty = 1.0E6 * TMath::ATan(candidateMomentum.Py()/pz);
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| 116 |
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| 117 | tx = 0.0;
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| 118 | ty = 0.0;
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| 119 |
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| 120 | H_BeamParticle particle(candidate->Mass, candidate->Charge);
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| 121 | particle.set4Momentum(candidateMomentum);
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| 122 | particle.setPosition(x, y, tx, ty, z);
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| 123 |
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| 124 | particle.smearAng(fSigmaX, fSigmaY, gRandom);
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| 125 | particle.smearE(fSigmaE, gRandom);
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| 126 |
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| 127 | particle.computePath(fBeamLine);
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| 128 |
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| 129 | if(particle.stopped(fBeamLine)) continue;
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| 130 |
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| 131 | particle.propagate(fDistance);
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| 132 |
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| 133 | mother = candidate;
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| 134 | candidate = static_cast<Candidate*>(candidate->Clone());
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| 135 | candidate->Position.SetXYZT(particle.getX(), particle.getY(), fDistance, 0.0);
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| 136 | candidate->Momentum.SetPxPyPzE(particle.getTX(), particle.getTY(), 0.0, particle.getE());
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| 137 | candidate->AddCandidate(mother);
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| 138 |
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| 139 | fOutputArray->Add(candidate);
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| 140 | }
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| 141 | }
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| 142 |
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| 143 | //------------------------------------------------------------------------------
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