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// $Id: SeparatePileUpMod.cc,v 1.2 2012/04/27 22:41:41 ceballos Exp $
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#include "MitPhysics/Mods/interface/SeparatePileUpMod.h"
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#include "MitAna/DataTree/interface/PFCandidateCol.h"
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#include "MitAna/DataTree/interface/VertexCol.h"
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#include "MitPhysics/Init/interface/ModNames.h"
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using namespace mithep;
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ClassImp(mithep::SeparatePileUpMod)
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//------------------------------------------------------------------------------
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SeparatePileUpMod::SeparatePileUpMod(const char *name, const char *title) :
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BaseMod(name,title),
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fPFCandidatesName(Names::gkPFCandidatesBrn),
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fPFPileUpName("PFPileUp"),
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fPFNoPileUpName("PFNoPileUp"),
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fAllVertexName(Names::gkPVBrn),
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fVertexName(ModNames::gkGoodVertexesName),
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fPFCandidates(0),
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fAllVertices(0),
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fVertices(0),
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fCheckClosestZVertex(kTRUE),
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fUseAllVertices(kTRUE)
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{
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// Constructor.
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}
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//------------------------------------------------------------------------------
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void SeparatePileUpMod::Process()
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{
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// Process entries of the tree.
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LoadBranch(fPFCandidatesName);
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PFCandidateOArr *pfPileUp = new PFCandidateOArr;
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pfPileUp->SetName(fPFPileUpName);
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PFCandidateOArr *pfNoPileUp = new PFCandidateOArr;
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pfNoPileUp->SetName(fPFNoPileUpName);
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LoadBranch(fAllVertexName);
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if(fUseAllVertices == kTRUE) fVertices = fAllVertices;
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else fVertices = GetObjThisEvt<VertexOArr>(fVertexName);
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for(UInt_t i = 0; i < fPFCandidates->GetEntries(); i++) {
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const PFCandidate *pf = fPFCandidates->At(i);
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assert(pf);
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if(pf->PFType() == PFCandidate::eHadron) {
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if(pf->HasTrackerTrk() &&
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fVertices->At(0)->HasTrack(pf->TrackerTrk()) &&
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fVertices->At(0)->TrackWeight(pf->TrackerTrk()) > 0)
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{
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pfNoPileUp->Add(pf);
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}
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else {
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Bool_t vertexFound = kFALSE;
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const Vertex *closestVtx = 0;
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Double_t dzmin = 10000;
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for(UInt_t j = 0; j < fAllVertices->GetEntries(); j++) {
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const Vertex *vtx = fAllVertices->At(j);
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assert(vtx);
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if(pf->HasTrackerTrk() &&
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vtx->HasTrack(pf->TrackerTrk()) &&
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vtx->TrackWeight(pf->TrackerTrk()) > 0) {
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vertexFound = kTRUE;
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closestVtx = vtx;
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break;
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}
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Double_t dz = fabs(pf->SourceVertex().Z() - vtx->Z());
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if(dz < dzmin) {
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closestVtx = vtx;
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dzmin = dz;
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}
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}
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if(fCheckClosestZVertex) {
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// Fallback: if track is not associated with any vertex,
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// associate it with the vertex closest in z
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if(vertexFound || closestVtx != fVertices->At(0))
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pfPileUp->Add(pf);
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else
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pfNoPileUp->Add(pf);
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}
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else {
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if(vertexFound && closestVtx != fVertices->At(0))
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pfPileUp->Add(pf);
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else
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pfNoPileUp->Add(pf); // Ridiculous but that's how it is
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}
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}
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}
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else {
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pfNoPileUp->Add(pf);
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}
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} // Loop over PF candidates
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// add to event for other modules to use
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AddObjThisEvt(pfPileUp);
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AddObjThisEvt(pfNoPileUp);
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}
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//------------------------------------------------------------------------------
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void SeparatePileUpMod::SlaveBegin()
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{
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// Run startup code on the computer (slave) doing the actual analysis. Here,
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// we just request the Tau collection branch.
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ReqBranch(fAllVertexName, fAllVertices);
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ReqBranch(fPFCandidatesName, fPFCandidates);
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}
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