00001
00002 #include "Rivet/Analysis.hh"
00003 #include "Rivet/RivetAIDA.hh"
00004 #include "Rivet/Tools/ParticleIdUtils.hh"
00005 #include "Rivet/Tools/Logging.hh"
00006 #include "Rivet/Projections/ChargedFinalState.hh"
00007 #include "Rivet/Projections/ChargedLeptons.hh"
00008
00009 namespace Rivet {
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00030 class CDF_2010_S8591881_DY : public Analysis {
00031 public:
00032
00033
00034 CDF_2010_S8591881_DY() : Analysis("CDF_2010_S8591881_DY")
00035 {
00036 setBeams(PROTON, ANTIPROTON);
00037 }
00038
00039
00040
00041
00042
00043 void init() {
00044
00045 const ChargedFinalState cfs(-1.0, 1.0, 0.5*GeV);
00046 const ChargedFinalState clfs(-1.0, 1.0, 20*GeV);
00047 addProjection(cfs, "FS");
00048 addProjection(ChargedLeptons(clfs), "CL");
00049
00050
00051 _hist_tnchg = bookProfile1D( 1, 1, 1);
00052 _hist_pnchg = bookProfile1D( 1, 1, 2);
00053 _hist_anchg = bookProfile1D( 1, 1, 3);
00054 _hist_pmaxnchg = bookProfile1D( 2, 1, 1);
00055 _hist_pminnchg = bookProfile1D( 2, 1, 2);
00056 _hist_pdifnchg = bookProfile1D( 2, 1, 3);
00057 _hist_tcptsum = bookProfile1D( 3, 1, 1);
00058 _hist_pcptsum = bookProfile1D( 3, 1, 2);
00059 _hist_acptsum = bookProfile1D( 3, 1, 3);
00060 _hist_pmaxcptsum = bookProfile1D( 4, 1, 1);
00061 _hist_pmincptsum = bookProfile1D( 4, 1, 2);
00062 _hist_pdifcptsum = bookProfile1D( 4, 1, 3);
00063 _hist_tcptave = bookProfile1D( 5, 1, 1);
00064 _hist_pcptave = bookProfile1D( 5, 1, 2);
00065 _hist_tcptmax = bookProfile1D( 6, 1, 1);
00066 _hist_pcptmax = bookProfile1D( 6, 1, 2);
00067 _hist_zptvsnchg = bookProfile1D( 7, 1, 1);
00068 _hist_cptavevsnchg = bookProfile1D( 8, 1, 1);
00069 _hist_cptavevsnchgsmallzpt = bookProfile1D( 9, 1, 1);
00070 }
00071
00072
00073
00074 void analyze(const Event& e) {
00075
00076 const FinalState& fs = applyProjection<FinalState>(e, "FS");
00077 const size_t numParticles = fs.particles().size();
00078
00079
00080 if (numParticles < 1) {
00081 getLog() << Log::DEBUG << "Failed multiplicity cut" << endl;
00082 vetoEvent;
00083 }
00084
00085
00086 const double weight = e.weight();
00087
00088
00089 const ParticleVector& leptons = applyProjection<ChargedLeptons>(e, "CL").chargedLeptons();
00090
00091
00092 getLog() << Log::DEBUG << "lepton multiplicity = " << leptons.size() << endl;
00093 if (leptons.size() != 2 || leptons[0].pdgId() != -leptons[1].pdgId() ) vetoEvent;
00094
00095
00096 if (leptons[0].momentum().pT()/GeV <= 20 || leptons[1].momentum().pT()/GeV <= 20) vetoEvent;
00097
00098
00099 const FourMomentum dilepton = leptons[0].momentum() + leptons[1].momentum();
00100 if (!inRange(dilepton.mass()/GeV, 70., 110.) || fabs(dilepton.eta()) >= 6) vetoEvent;
00101 getLog() << Log::DEBUG << "Dilepton mass = " << mass(dilepton)/GeV << " GeV" << endl;
00102 getLog() << Log::DEBUG << "Dilepton pT = " << pT(dilepton)/GeV << " GeV" << endl;
00103
00104
00105 size_t numToward(0), numAway(0);
00106 long int numTrans1(0), numTrans2(0);
00107 double ptSumToward(0.0), ptSumTrans1(0.0), ptSumTrans2(0.0), ptSumAway(0.0);
00108 double ptMaxToward(0.0), ptMaxTrans1(0.0), ptMaxTrans2(0.0), ptMaxAway(0.0);
00109 const double phiZ = azimuthalAngle(dilepton);
00110 const double pTZ = pT(dilepton);
00111
00112 for (ParticleVector::const_iterator p = fs.particles().begin(); p != fs.particles().end(); ++p) {
00113
00114
00115 if (abs(p->pdgId()) < 20) continue;
00116
00117 const double dPhi = deltaPhi(p->momentum().phi(), phiZ);
00118 const double pT = p->momentum().pT();
00119 double rotatedphi = p->momentum().phi() - phiZ;
00120 while (rotatedphi < 0) rotatedphi += 2*PI;
00121
00122 if (dPhi < PI/3.0) {
00123 ptSumToward += pT;
00124 ++numToward;
00125 if (pT > ptMaxToward)
00126 ptMaxToward = pT;
00127 } else if (dPhi < 2*PI/3.0) {
00128 if (rotatedphi <= PI) {
00129 ptSumTrans1 += pT;
00130 ++numTrans1;
00131 if (pT > ptMaxTrans1)
00132 ptMaxTrans1 = pT;
00133 }
00134 else {
00135 ptSumTrans2 += pT;
00136 ++numTrans2;
00137 if (pT > ptMaxTrans2)
00138 ptMaxTrans2 = pT;
00139 }
00140 } else {
00141 ptSumAway += pT;
00142 ++numAway;
00143 if (pT > ptMaxAway)
00144 ptMaxAway = pT;
00145 }
00146
00147 _hist_cptavevsnchg->fill(numParticles-2, pT, weight);
00148 if (pTZ < 10)
00149 _hist_cptavevsnchgsmallzpt->fill(numParticles-2, pT, weight);
00150 }
00151
00152
00153 _hist_tnchg->fill(pTZ, numToward/(4*PI/3), weight);
00154 _hist_pnchg->fill(pTZ, (numTrans1+numTrans2)/(4*PI/3), weight);
00155 _hist_pmaxnchg->fill(pTZ, (numTrans1>numTrans2 ? numTrans1 : numTrans2)/(2*PI/3), weight);
00156 _hist_pminnchg->fill(pTZ, (numTrans1<numTrans2 ? numTrans1 : numTrans2)/(2*PI/3), weight);
00157 _hist_pdifnchg->fill(pTZ, abs(numTrans1-numTrans2)/(2*PI/3), weight);
00158 _hist_anchg->fill(pTZ, numAway/(4*PI/3), weight);
00159
00160 _hist_tcptsum->fill(pTZ, ptSumToward/(4*PI/3), weight);
00161 _hist_pcptsum->fill(pTZ, (ptSumTrans1+ptSumTrans2)/(4*PI/3), weight);
00162 _hist_pmaxcptsum->fill(pTZ, (ptSumTrans1>ptSumTrans2 ? ptSumTrans1 : ptSumTrans2)/(2*PI/3), weight);
00163 _hist_pmincptsum->fill(pTZ, (ptSumTrans1<ptSumTrans2 ? ptSumTrans1 : ptSumTrans2)/(2*PI/3), weight);
00164 _hist_pdifcptsum->fill(pTZ, fabs(ptSumTrans1-ptSumTrans2)/(2*PI/3), weight);
00165 _hist_acptsum->fill(pTZ, ptSumAway/(4*PI/3), weight);
00166
00167 if (numToward > 0) {
00168 _hist_tcptave->fill(pTZ, ptSumToward/numToward, weight);
00169 _hist_tcptmax->fill(pTZ, ptMaxToward, weight);
00170 }
00171 if ((numTrans1+numTrans2) > 0) {
00172 _hist_pcptave->fill(pTZ, (ptSumTrans1+ptSumTrans2)/(numTrans1+numTrans2), weight);
00173 _hist_pcptmax->fill(pTZ, (ptMaxTrans1 > ptMaxTrans2 ? ptMaxTrans1 : ptMaxTrans2), weight);
00174 }
00175
00176
00177 _hist_zptvsnchg->fill(numParticles-2, pTZ, weight);
00178 }
00179
00180
00181 void finalize() {
00182 }
00183
00184
00185
00186 private:
00187
00188 AIDA::IProfile1D *_hist_tnchg;
00189 AIDA::IProfile1D *_hist_pnchg;
00190 AIDA::IProfile1D *_hist_pmaxnchg;
00191 AIDA::IProfile1D *_hist_pminnchg;
00192 AIDA::IProfile1D *_hist_pdifnchg;
00193 AIDA::IProfile1D *_hist_anchg;
00194 AIDA::IProfile1D *_hist_tcptsum;
00195 AIDA::IProfile1D *_hist_pcptsum;
00196 AIDA::IProfile1D *_hist_pmaxcptsum;
00197 AIDA::IProfile1D *_hist_pmincptsum;
00198 AIDA::IProfile1D *_hist_pdifcptsum;
00199 AIDA::IProfile1D *_hist_acptsum;
00200 AIDA::IProfile1D *_hist_tcptave;
00201 AIDA::IProfile1D *_hist_pcptave;
00202 AIDA::IProfile1D *_hist_tcptmax;
00203 AIDA::IProfile1D *_hist_pcptmax;
00204 AIDA::IProfile1D *_hist_zptvsnchg;
00205 AIDA::IProfile1D *_hist_cptavevsnchg;
00206 AIDA::IProfile1D *_hist_cptavevsnchgsmallzpt;
00207
00208 };
00209
00210
00211
00212 AnalysisBuilder<CDF_2010_S8591881_DY> plugin_CDF_2010_S8591881_DY;
00213
00214 }