本文整理汇总了C++中TLorentzVector::Mag方法的典型用法代码示例。如果您正苦于以下问题：C++ TLorentzVector::Mag方法的具体用法？C++ TLorentzVector::Mag怎么用？C++ TLorentzVector::Mag使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类TLorentzVector的用法示例。
在下文中一共展示了TLorentzVector::Mag方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: dijet_analysis_mistag_prediction_fwlite
//.........这里部分代码省略.........
double jet2pt = jet2.pt() / corrF2;
TLorentzVector v = v1 + v2;
// get the tag quantities
bool tagged1 =
(topMass1 >= topMassCut1 && topMass1 <= topMassCut2) &&
(wMass1 >= wMassCut1 && wMass1 <= wMassCut2 ) &&
(minMass1 >= minMassCut1 && minMass1 <= minMassCut2);
bool tagged2 =
(topMass2 >= topMassCut1 && topMass2 <= topMassCut2) &&
(wMass2 >= wMassCut1 && wMass2 <= wMassCut2 ) &&
(minMass2 >= minMassCut1 && minMass2 <= minMassCut2);
// if ( true ) {
// int bin1 = parameterization->FindBin(jet1.pt() );
// int bin2 = parameterization->FindBin(jet2.pt() );
// cout << "v.Mag() = " << v.Mag() << endl;
// cout << "jet1.p4 = " << v1 << endl;
// cout << "bin1 = " << bin1 << endl;
// cout << "rate1 = " << parameterization->GetBinContent(bin1) << " +- " << parameterization->GetBinError(bin1) << endl;
// cout << "jet2.p4 = " << v2 << endl;
// cout << "bin2 = " << bin2 << endl;
// cout << "rate2 = " << parameterization->GetBinContent(bin2) << " +- " << parameterization->GetBinError(bin2) << endl;
// }
if ( tagged1 ) {
total_pred->Accumulate( 1.0, jet2pt, tagged2, fillWeight );
jet_pt_pred->Accumulate( jet2pt, jet2pt, tagged2 , fillWeight );
jet_eta_pred->Accumulate( jet2.eta(), jet2pt, tagged2 , fillWeight );
jet_phi_pred->Accumulate( jet2.phi(), jet2pt, tagged2 , fillWeight );
dijetmass_pred->Accumulate( v.Mag(), jet2pt, tagged2 , fillWeight );
}
if ( tagged2 ) {
total_pred->Accumulate( 1.0, jet1pt, tagged1 , fillWeight);
jet_pt_pred->Accumulate( jet1pt, jet1pt, tagged1 , fillWeight);
jet_eta_pred->Accumulate( jet1.eta(), jet1pt, tagged1 , fillWeight);
jet_phi_pred->Accumulate( jet1.phi(), jet1pt, tagged1 , fillWeight);
dijetmass_pred->Accumulate( v.Mag(), jet1pt, tagged1 , fillWeight);
}
}
// else if ( jets.size() == 1 && njets == 1 ) {
// // cout << "Have 1 jet" << endl;
// pat::Jet const & jet1 = jets[0];
// const reco::CATopJetTagInfo * catopTag1 = dynamic_cast<CATopJetTagInfo const *> (jet1.tagInfo("CATopJetTagger"));
// double topMass1 = catopTag1->properties().topMass;
// double wMass1 = catopTag1->properties().wMass;
// double minMass1 = catopTag1->properties().minMass;
// TLorentzVector v1(jet1.px(), jet1.py(), jet1.pz(), jet1.energy() );
// // get the tag quantities
// bool tagged1 =
// (topMass1 >= topMassCut1 && topMass1 <= topMassCut2) &&
// (wMass1 >= wMassCut1 && wMass1 <= wMassCut2 ) &&
// (minMass1 >= minMassCut1 && minMass1 <= minMassCut2);示例2: main
//.........这里部分代码省略.........
gRecon->Add(curFileName.c_str());
gGenVtx->Add(curFileName.c_str());
}
}
}
std::cout << "Got input file(s)." << std::endl;
//Setup access to the Recon tree
int NPIDs(0); // This variable counts the number of particles per event
int NVtxFGD1(0), NVtxFGD2(0);
// Declare a TClonesArray to hold objects of type TGlobalPID
TClonesArray *globalPIDs = new TClonesArray("ND::TGlobalReconModule::TGlobalPID",50);
TClonesArray *VtxFGD1 = new TClonesArray("ND::TTruthVerticesModule::TTruthVertex",50);
TClonesArray *VtxFGD2 = new TClonesArray("ND::TTruthVerticesModule::TTruthVertex",50);
// Associate the right branch in the TTree to the right local variable
gRecon->SetBranchAddress("NPIDs",&NPIDs);
gRecon->SetBranchAddress("PIDs",&globalPIDs);
gGenVtx->SetBranchAddress("VtxFGD1", &VtxFGD1);
gGenVtx->SetBranchAddress("NVtxFGD1", &NVtxFGD1);
gGenVtx->SetBranchAddress("VtxFGD2", &VtxFGD2);
gGenVtx->SetBranchAddress("NVtxFGD2", &NVtxFGD2);
//check that truthdir and recon have the same number of entries
if(gRecon->GetEntries() != gGenVtx->GetEntries())
cout<<"not equal entries, probably wrong"<<endl;
// Loop over the entries in the TChain.
//========================================================
// Declare Graphs n stuff here
//========================================================
//adding tclones arrays for use with detectors
Int_t NTPCs;
TClonesArray *TPC;
Int_t NFDGs;
TClonesArray *FDG;
Int_t NECALs;
TClonesArray *ECAL;
Int_t NPODs;
TClonesArray *POD;
Int_t NSMRDs;
TClonesArray *SMRD;
//adding a 2d graph general purpose, change titles each time!
TH1D *graph1 = new TH1D("graph1","Histogram of Neutrino momentum in FGD", 100, -1.5 , 1.5);
//========================================================
// end Declare Graphs n stuff here
//========================================================
// Loop over the entries in the TChain. (only 1/1000 of whole entries atm)
for(unsigned int i = 0; i < gRecon->GetEntries()*0.1; ++i) {
if((i+1)%10000 == 0) std::cout << "Processing event: " << (i+1) << std::endl;
//display status every 10,000 th entry
// Get an entry for the Recon tree
gRecon->GetEntry(i);
gGenVtx->GetEntry(i);
ND::TGlobalReconModule::TGlobalPID *gTrack = NULL;
//added new loop for truth vertex
gGenVtx->GetEntry(i);
for (int j=0; j<NPIDs; j++) {
// Get a specific track from the TClonesArray
gTrack = (ND::TGlobalReconModule::TGlobalPID*)globalPIDs->At(j);
//get truevertex (in example, also gets trueparticle, can add in later)
ND::TTrueVertex vtx = gTrack->TrueParticle.Vertex;
//get position lorrentz vector
TLorentzVector vec = vtx.Position;
TLorentzVector momvec = vtx.Momentum;
if(vtx.ReactionCode.find("Weak[NC],QES;",0)!=-1){
if(ABS(vec.X())<832.2 && ABS(vec.Y()-55)<832.2 && ((vec.Z()>123.45&&vec.Z()<446.95)||(vec.Z()>1481.45&&vec.Z()<1807.95))){ //is it in one of the FGDs?
//graph1->Fill(vec.X(),vec.Y());
graph1->Fill(momvec.Mag());
}
}
TClonesArray *TPCObjects = new TClonesArray("ND::TGlobalReconModule::TTPCObject",gTrack->NTPCs);
ND::TGlobalReconModule::TObject *tpcTrack = NULL;
for ( int k = 0 ; k < gTrack->NTPCs; k++) {
tpcTrack = (ND::TGlobalReconModule::TObject*) TPCObjects->At(k);
//now we can access variables through tpcTrack->PullEle for example
}
}
} // End loop over events
cout << "done loop!" << endl;
//plotting bits at the end :D
graph1->GetXaxis()->SetTitle("Momentum");
graph1->GetYaxis()->SetTitle("Number");
graph1->Draw();
App->Run();
return 0;
}