StFlowMaker/StFlowCutEvent.cxx

//
// $Id: StFlowCutEvent.cxx,v 1.46 2010/09/30 19:30:23 posk Exp $
//
// Author: Art Poskanzer and Raimond Snellings, LBNL, Oct 1999
//          MuDst enabled by Kirill Filimonov, LBNL, Jun 2002
//          year4 triggers by Paul Sorenson, LBNL, Feb 2005
//
// Description:  Class for applying event cuts
//

#include <Stiostream.h>
#include <stdlib.h>
#include "StFlowCutEvent.h"
#include "StFlowCutTrack.h"
#include "StEvent.h"
#include "StFlowPicoEvent.h"
#include "StEventTypes.h"
#include "PhysicalConstants.h"
#include "SystemOfUnits.h"
#include "StThreeVectorF.hh"
#include "StFlowConstants.h"
#include "StMuDSTMaker/COMMON/StMuEvent.h"
#include "StMuDSTMaker/COMMON/StMuTrack.h"
#define PR(x) cout << "##### FlowCutEvent: " << (#x) << " = " << (x) << endl;

ClassImp(StFlowCutEvent)

//-----------------------------------------------------------------------

Int_t    StFlowCutEvent::mCentCuts[2]       = {0, 0};
Int_t    StFlowCutEvent::mMultCuts[2]       = {10, 10000};
Float_t  StFlowCutEvent::mVertexXCuts[2]    = {-1., 1.};
Float_t  StFlowCutEvent::mVertexYCuts[2]    = {-1., 1.};
Float_t  StFlowCutEvent::mVertexZCuts[2]    = {-75., 75.};
UInt_t   StFlowCutEvent::mEventN            = 0;     
UInt_t   StFlowCutEvent::mGoodEventN        = 0;
UInt_t   StFlowCutEvent::mCentCut           = 0;
UInt_t   StFlowCutEvent::mMultCut           = 0;
UInt_t   StFlowCutEvent::mVertexXCut        = 0;
UInt_t   StFlowCutEvent::mVertexYCut        = 0;
UInt_t   StFlowCutEvent::mVertexZCut        = 0;
Float_t  StFlowCutEvent::mEtaSymTpcCuts[2]  = {-3., 3.};
UInt_t   StFlowCutEvent::mEtaSymTpcCutN     = 0;     
Float_t  StFlowCutEvent::mEtaSymFtpcCuts[2] = {-5., 5.};
UInt_t   StFlowCutEvent::mEtaSymFtpcCutN    = 0;     
UInt_t   StFlowCutEvent::mTriggerCut        = 1;
UInt_t   StFlowCutEvent::mTriggerCutN       = 0;
UInt_t   StFlowCutEvent::mTriggersFound     = 10;
UInt_t   StFlowCutEvent::flowTriggerBitMap  = 0;
//-----------------------------------------------------------------------

StFlowCutEvent::StFlowCutEvent() {
  // To apply event cuts
}

//-----------------------------------------------------------------------

StFlowCutEvent::~StFlowCutEvent() {
}

//-----------------------------------------------------------------------

Bool_t StFlowCutEvent::CheckEvent(StEvent* pEvent) {
  // Returns kTRUE if StEvent survives all the cuts
  if (!pEvent) return kFALSE;

  // Primary vertex
  Long_t nvtx = pEvent->numberOfPrimaryVertices();
  if (nvtx == 0) {
    //      cout << "FlowCutEvent: no Vertex " << endl;
    return kFALSE;
  }
  StPrimaryVertex* pVertex = pEvent->primaryVertex(0);
  if (!pVertex) return kFALSE;

  // Multiplicity
  Long_t mult = pVertex->numberOfDaughters();
  if (mMultCuts[1] > mMultCuts[0] && 
     (mult < mMultCuts[0] || mult >= mMultCuts[1])) {
    mMultCut++;
    return kFALSE;
  }
  
  // update normal event counter
  mEventN++;

  const StThreeVectorF& vertex = pVertex->position();
 
  // Vertex x
  Float_t vertexX = vertex.x();
  if (mVertexXCuts[1] > mVertexXCuts[0] &&
     (vertexX < mVertexXCuts[0] || vertexX >= mVertexXCuts[1])) {
    mVertexXCut++;
    return kFALSE;
  }

  // Vertex y
  Float_t vertexY = vertex.y();
  if (mVertexYCuts[1] > mVertexYCuts[0] &&
     (vertexY < mVertexYCuts[0] || vertexY >= mVertexYCuts[1])) {
    mVertexYCut++;
    return kFALSE;
  }

  // Vertex z
  Float_t vertexZ = vertex.z();
  if (mVertexZCuts[1] > mVertexZCuts[0] &&
     (vertexZ < mVertexZCuts[0] || vertexZ >= mVertexZCuts[1])) {
    mVertexZCut++;
    return kFALSE;
  }

  // Check the for acceptable trigger words

  if (pEvent->runId() > 4000000 ) { // trigger collections were used
    flowTriggerBitMap = 0;
    Float_t ctbMult = 0.;
    StTriggerDetectorCollection *triggers = pEvent->triggerDetectorCollection();
    if (triggers) {
      StCtbTriggerDetector &CTB = triggers->ctb();
      // get CTB
      for (UInt_t slat = 0; slat < CTB.numberOfSlats(); slat++) {
        for (UInt_t tray = 0; tray < CTB.numberOfTrays(); tray++) {
          ctbMult += CTB.mips(tray,slat,0);
        }
      }
    }

    // Add new minbias triggers to look for here
    if      ( // year 4 full field minbias triggers
             pEvent->triggerIdCollection()->nominal()->isTrigger(15007)
             // || pEvent->triggerIdCollection().nominal().isTrigger(15003)
             ){
      flowTriggerBitMap += 1;
    } 
    else if ( // year 4 half field minbias triggers
             pEvent->triggerIdCollection()->nominal()->isTrigger(25007) 
             ){
      flowTriggerBitMap += 1;
    } 
    else if ( // 62 GeV triggers
             pEvent->triggerIdCollection()->nominal()->isTrigger(35004) ||
             pEvent->triggerIdCollection()->nominal()->isTrigger(35007) ||
             ( pEvent->triggerIdCollection()->nominal()->isTrigger(35001) && 
               ctbMult > 15 ) ||
             ( pEvent->triggerIdCollection()->nominal()->isTrigger(35009) && 
               ctbMult > 15 )
             ){
      flowTriggerBitMap += 1;
    }

    // Add new central triggers to look for here
    if        ( // year 4 full field central triggers
       pEvent->triggerIdCollection()->nominal()->isTrigger(15105) 
       ){
      flowTriggerBitMap += 2;;
    } else if ( // year 4 half field central
               pEvent->triggerIdCollection()->nominal()->isTrigger(25105) 
               ){
      flowTriggerBitMap += 2;
    }
    
    //Make selection from trigger bit map
    if (mTriggerCut==0 && (flowTriggerBitMap &2 || flowTriggerBitMap &1) ){
      mTriggersFound = 0;
    } else if (mTriggerCut==1 && (flowTriggerBitMap &1) ){
      mTriggersFound = 1;
    } else if (mTriggerCut==2 && (flowTriggerBitMap &2) ){
      mTriggersFound = 2;
    } else {//an unsupported trigger cut selection was made (0, 1, and 2)
      mTriggerCutN++;
      return kFALSE;
    }

  } 

  // before run 4 triggerWords were used
  else {
    if (pEvent->l3Trigger() && pEvent->l3Trigger()->l3EventSummary() &&
        !(pEvent->l3Trigger()->l3EventSummary()->unbiasedTrigger())) {
      // cout << "FlowCutEvent: L3 biased trigger event " << endl;
      return kFALSE;
    }
    
    StL0Trigger* pTrigger = pEvent->l0Trigger();
    
    if (pTrigger) {
      UInt_t triggerWord = pTrigger->triggerWord();
      
      switch (triggerWord) {
      case 4096:  mTriggersFound = 1;  break; // minbias
      case 4352:  mTriggersFound = 2;  break; // central
      case 61952: mTriggersFound = 3;  break; // laser
      default:    mTriggersFound = 10; break; // no clue
      }
    }    
    if (mTriggerCut && mTriggersFound != mTriggerCut) {
      mTriggerCutN++;
      return kFALSE;
    }
  }
  
  mGoodEventN++;
  return kTRUE;
}

//-----------------------------------------------------------------------

Bool_t StFlowCutEvent::CheckEvent(StFlowPicoEvent* pPicoEvent) {
  // Returns kTRUE if picoevent survives all the cuts
  
  if (!pPicoEvent) return kFALSE;

  // Multiplicity
  Int_t mult = pPicoEvent->OrigMult();
  if (mMultCuts[1] > mMultCuts[0] && 
     (mult < mMultCuts[0] || mult >= mMultCuts[1])) {
    mMultCut++;
    return kFALSE;
  }
   
  //This is obsolete!!!! There is no trigger word after year 4
  // Trigger
  UInt_t triggerWord = pPicoEvent->L0TriggerWord();

  if (pPicoEvent->CenterOfMassEnergy() > 60. && pPicoEvent->CenterOfMassEnergy() < 65. ) { // 62 GeV
    if (!( (triggerWord == 35004 || triggerWord == 35007) ||
          ((triggerWord == 35001 || triggerWord == 35009) && pPicoEvent->CTB() > 15) )) {
      mTriggersFound = 10; // no clue
    } else {
      mTriggersFound = 1; // minbias
    }
  } 

  else {
    switch (triggerWord) {
    case 4096:  mTriggersFound = 1;  break; // minbias
    case 4352:  mTriggersFound = 2;  break; // central
    case 61952: mTriggersFound = 3;  break; // laser
    default:    mTriggersFound = 10; break; // no clue
    }    
  }

  if (mTriggerCut && mTriggersFound != mTriggerCut) {
    mTriggerCutN++;
    return kFALSE;
  }

  // Centrality
  // Centrality=0 is not retievable
  Int_t cent = pPicoEvent->CalcCentrality();
  if (mCentCuts[0] && mCentCuts[1] >= mCentCuts[0] && 
      (cent < mCentCuts[0] || cent > mCentCuts[1])) {
    mCentCut++;
    return kFALSE;
  }
  
  // update normal event counter
  mEventN++;

  // Vertex x
  Float_t vertexX = pPicoEvent->VertexX();
  if (mVertexXCuts[1] > mVertexXCuts[0] &&
     (vertexX < mVertexXCuts[0] || vertexX >= mVertexXCuts[1])) {
    mVertexXCut++;
    return kFALSE;
  }

  // Vertex y
  Float_t vertexY = pPicoEvent->VertexY();
  if (mVertexYCuts[1] > mVertexYCuts[0] &&
     (vertexY < mVertexYCuts[0] || vertexY >= mVertexYCuts[1])) {
    mVertexYCut++;
    return kFALSE;
  }

  // Vertex z
  Float_t vertexZ = pPicoEvent->VertexZ();
  if (mVertexZCuts[1] > mVertexZCuts[0] &&
     (vertexZ < mVertexZCuts[0] || vertexZ >= mVertexZCuts[1])) {
    mVertexZCut++;
    return kFALSE;
  }

  mGoodEventN++;
  return kTRUE;
}

//-----------------------------------------------------------------------

Bool_t StFlowCutEvent::CheckEvent(StMuDst* pMu) {
  // Returns kTRUE if muevent survives all the cuts
  if (!pMu) return kFALSE;

  StMuEvent* pMuEvent  = pMu->event();
  TObjArray* pMuTracks = pMu->primaryTracks();
  if (!pMuEvent) return kFALSE;

  // Primary vertex
  // The following lines were introduced to get rid of events without a primary vertex.
  // These events are possible since the FTPC uses (0., 0., 0.) as a nominal vertex position
  // if no vertex is found. (This was requested by UPC.) If in such an event tracks are found 
  // they'll make it into the MuDst. Unfortunately a proper scheme to exclude those events is missing. 
  // By cutting on the vertex position we eliminated those events. 
  // THIS WILL REMOVE SIMPLE SIMULATED EVENTS AS WELL!
  if (TMath::Abs(pMuEvent->primaryVertexPosition().x()) < 1.e-5 &&
      TMath::Abs(pMuEvent->primaryVertexPosition().y()) < 1.e-5 &&
      TMath::Abs(pMuEvent->primaryVertexPosition().z()) < 1.e-5) {
    // cout << "FlowCutEvent: no Vertex " << endl;
    return kFALSE;
  }
  
  // Multiplicity 
  Int_t mult = pMuTracks->GetEntries();
  if (mMultCuts[1] > mMultCuts[0] && 
      (mult < mMultCuts[0] || mult >= mMultCuts[1])) {
    mMultCut++;
    return kFALSE;
  }
   
  // Check the for acceptable trigger words and set the
  // correct Flow::centrality array
  Int_t* cent = 0;
  Int_t centrality = 0; // Centrality=0 is not retrievable

    flowTriggerBitMap = 0;

    // Add new minbias triggers to look for here
    if      ( // year 4 full field minbias triggers
             pMuEvent->triggerIdCollection().nominal().isTrigger(15007)
             // || pMuEvent->triggerIdCollection().nominal().isTrigger(15003)
             ){
      flowTriggerBitMap += 1;
      cent = Flow::cent200Year4Full; // full field
    } 
    else if ( // year 4 half field minbias triggers
             pMuEvent->triggerIdCollection().nominal().isTrigger(25007) 
             ){
      flowTriggerBitMap += 1;
      cent = Flow::cent200Year4Half; // half field
    } 
    else if ( // 62 GeV triggers
             pMuEvent->triggerIdCollection().nominal().isTrigger(35004) ||
             pMuEvent->triggerIdCollection().nominal().isTrigger(35007) ||
             ( pMuEvent->triggerIdCollection().nominal().isTrigger(35001) && 
               pMuEvent->ctbMultiplicity() > 15 ) ||
             ( pMuEvent->triggerIdCollection().nominal().isTrigger(35009) && 
               pMuEvent->ctbMultiplicity() > 15 )
             ){
      flowTriggerBitMap += 1;
      cent = Flow::cent62; // 62.4 GeV data
    }
    else if ( // year7
             pMuEvent->triggerIdCollection().nominal().isTrigger(200001)||
             pMuEvent->triggerIdCollection().nominal().isTrigger(200003)||
             pMuEvent->triggerIdCollection().nominal().isTrigger(200013)) {
      flowTriggerBitMap += 1;
      cent = Flow::cent200Year7; // 200 GeV year 7 data
    }

    // Add new central triggers to look for here
    if        ( // year 4 full field central triggers
               pMuEvent->triggerIdCollection().nominal().isTrigger(15105) 
               ){
      flowTriggerBitMap += 2;
      cent = Flow::cent200Year4Full; // full field
    } else if ( // year 4 half field central
               pMuEvent->triggerIdCollection().nominal().isTrigger(25105) 
               ){
      flowTriggerBitMap += 2;
      cent = Flow::cent200Year4Half; // half field
    }
    
    //Make selection from trigger bit map
    if (mTriggerCut==0 && (flowTriggerBitMap &2 || flowTriggerBitMap &1) ){
      mTriggersFound = 0;
    } else if (mTriggerCut==1 && (flowTriggerBitMap &1) ){
      mTriggersFound = 1;
    } else if (mTriggerCut==2 && (flowTriggerBitMap &2) ){
      mTriggersFound = 2;
    } else {//an unsupported trigger cut selection was made (0, 1, and 2)
      mTriggerCutN++;
      return kFALSE;
    }
  
    //Int_t tracks =  pMuEvent->refMult();
    Int_t tracks;
    if (pMuEvent->runId() > 8000000) { // year 7
      tracks =  pMuEvent->grefmult();
    } else {
      tracks =  pMuEvent->refMult(); 
    }

  if      (tracks < cent[0])  { centrality = 0; }
  else if (tracks < cent[1])  { centrality = 1; }
  else if (tracks < cent[2])  { centrality = 2; }
  else if (tracks < cent[3])  { centrality = 3; }
  else if (tracks < cent[4])  { centrality = 4; }
  else if (tracks < cent[5])  { centrality = 5; }
  else if (tracks < cent[6])  { centrality = 6; }
  else if (tracks < cent[7])  { centrality = 7; }
  else if (tracks < cent[8])  { centrality = 8; }
  else                        { centrality = 9; }

  if (mCentCuts[0] && mCentCuts[1] >= mCentCuts[0] && 
      (centrality < mCentCuts[0] || centrality > mCentCuts[1])) {
    mCentCut++;
    return kFALSE;
  }
  
  // update normal event counter
  mEventN++;

  // Vertex x
  Float_t vertexX = pMuEvent->primaryVertexPosition().x();
  if (mVertexXCuts[1] > mVertexXCuts[0] &&
     (vertexX < mVertexXCuts[0] || vertexX >= mVertexXCuts[1])) {
    mVertexXCut++;
    return kFALSE;
  }

  // Vertex y
  Float_t vertexY = pMuEvent->primaryVertexPosition().y();
  if (mVertexYCuts[1] > mVertexYCuts[0] &&
     (vertexY < mVertexYCuts[0] || vertexY >= mVertexYCuts[1])) {
    mVertexYCut++;
    return kFALSE;
  }

  // Vertex z
  Float_t vertexZ = pMuEvent->primaryVertexPosition().z();
  if (mVertexZCuts[1] > mVertexZCuts[0] &&
     (vertexZ < mVertexZCuts[0] || vertexZ >= mVertexZCuts[1])) {
    mVertexZCut++;
    return kFALSE;
  }

  mGoodEventN++;
  return kTRUE;

}
  
//-----------------------------------------------------------------------

Bool_t StFlowCutEvent::CheckEtaSymmetry(StEvent* pEvent) {
  // Returns kTRUE if StEvent survives this Eta symmetry cut
  // Call at the end of the event after doing CheckTrack for each track
  // If kFALSE you should delete the last event

  if (((StFlowCutTrack::EtaSymPosTpc() == 0 || StFlowCutTrack::EtaSymNegTpc() == 0) &&     // at least one half is empty
       !(StFlowCutTrack::EtaSymPosTpc() == 0 &&  StFlowCutTrack::EtaSymNegTpc() == 0)) ||  // but not both halves 
      ((StFlowCutTrack::EtaSymPosFtpc() == 0 || StFlowCutTrack::EtaSymNegFtpc() == 0) &&   // at least one FTPC is empty
       !(StFlowCutTrack::EtaSymPosFtpc() == 0 && StFlowCutTrack::EtaSymNegFtpc() == 0))) { // but not both FTPCs 
      // This looks ugly because there is no XOR and events w/o the FTPC or TPC switched on will be cut, otherwise.
    return kFALSE; // possible beam gas event
  }

  // Tpc
  float etaSymPosTpcN = (float)StFlowCutTrack::EtaSymPosTpc();
  float etaSymNegTpcN = (float)StFlowCutTrack::EtaSymNegTpc();
  float etaSymTpc = (etaSymPosTpcN - etaSymNegTpcN) / (etaSymPosTpcN + etaSymNegTpcN);
  // Ftpc
  float etaSymPosFtpcN = (float)StFlowCutTrack::EtaSymPosFtpc();
  float etaSymNegFtpcN = (float)StFlowCutTrack::EtaSymNegFtpc();
  float etaSymFtpc = (etaSymPosFtpcN - etaSymNegFtpcN) / (etaSymPosFtpcN + etaSymNegFtpcN);
  StFlowCutTrack::EtaSymClear();

  StPrimaryVertex* pVertex = pEvent->primaryVertex(0);
  if (!pVertex) return kFALSE;
  const StThreeVectorF& vertex = pVertex->position();
  Float_t vertexZ = vertex.z();
  // Tpc
  etaSymTpc += (Flow::etaSymZSlopeTpc * vertexZ); // correction for acceptance
  etaSymTpc *= ::sqrt((double)(etaSymPosTpcN + etaSymNegTpcN)); // corrected for statistics
  // Ftpc
  etaSymFtpc += (Flow::etaSymZSlopeFtpc * vertexZ); // corrected for acceptance
  etaSymFtpc *= ::sqrt((double)(etaSymPosFtpcN + etaSymNegFtpcN)); // corrected for statistics

  if (mEtaSymTpcCuts[1] > mEtaSymTpcCuts[0] && 
      (etaSymTpc < mEtaSymTpcCuts[0] || etaSymTpc >= mEtaSymTpcCuts[1])) {
    mEtaSymTpcCutN++;
    mGoodEventN--;
    return kFALSE;
  }

  else if (mEtaSymFtpcCuts[1] > mEtaSymFtpcCuts[0] && 
      (etaSymFtpc < mEtaSymFtpcCuts[0] || etaSymFtpc >= mEtaSymFtpcCuts[1])) {
    mEtaSymFtpcCutN++;
    mGoodEventN--;
    return kFALSE;
  }

  return kTRUE;
}

//-----------------------------------------------------------------------

Bool_t StFlowCutEvent::CheckEtaSymmetry(StFlowPicoEvent* pPicoEvent) {
  // Returns kTRUE if picoevent survives this Eta symmetry cut
  // Call at the end of the event after doing CheckTrack for each track
  // If kFALSE you should delete the last event

  if (((StFlowCutTrack::EtaSymPosTpc() == 0 || StFlowCutTrack::EtaSymNegTpc() == 0) &&     // at least one half is empty
       !(StFlowCutTrack::EtaSymPosTpc() == 0 &&  StFlowCutTrack::EtaSymNegTpc() == 0)) ||  // but not both halves 
      ((StFlowCutTrack::EtaSymPosFtpc() == 0 || StFlowCutTrack::EtaSymNegFtpc() == 0) &&   // at least one FTPC is empty
       !(StFlowCutTrack::EtaSymPosFtpc() == 0 && StFlowCutTrack::EtaSymNegFtpc() == 0))) { // but not both FTPCs 
      // This looks ugly because there is no XOR and events w/o the FTPC or TPC switched on will be cut, otherwise.
    return kFALSE; // possible beam gas event
  }

  // Tpc
  float etaSymPosTpcN = (float)StFlowCutTrack::EtaSymPosTpc();
  float etaSymNegTpcN = (float)StFlowCutTrack::EtaSymNegTpc();
  float etaSymTpc = (etaSymPosTpcN - etaSymNegTpcN) / (etaSymPosTpcN + etaSymNegTpcN);
  // Ftpc
  float etaSymPosFtpcN = (float)StFlowCutTrack::EtaSymPosFtpc();
  float etaSymNegFtpcN = (float)StFlowCutTrack::EtaSymNegFtpc();
  float etaSymFtpc = (etaSymPosFtpcN - etaSymNegFtpcN) / (etaSymPosFtpcN + etaSymNegFtpcN);
  StFlowCutTrack::EtaSymClear();

  Float_t vertexZ = pPicoEvent->VertexZ();
  // Tpc
  etaSymTpc += (Flow::etaSymZSlopeTpc * vertexZ); // correction for acceptance
  etaSymTpc *= ::sqrt((double)(etaSymPosTpcN + etaSymNegTpcN)); // corrected for statistics
  // Ftpc
  etaSymFtpc += (Flow::etaSymZSlopeFtpc * vertexZ); // correctly corrected for acceptance
  etaSymFtpc *= ::sqrt((double)(etaSymPosFtpcN + etaSymNegFtpcN)); // corrected for statistics

  if (mEtaSymTpcCuts[1] > mEtaSymTpcCuts[0] && 
      (etaSymTpc < mEtaSymTpcCuts[0] || etaSymTpc >= mEtaSymTpcCuts[1])) {
    mEtaSymTpcCutN++;
    mGoodEventN--;
    return kFALSE;
  }

  else if (mEtaSymFtpcCuts[1] > mEtaSymFtpcCuts[0] && 
      (etaSymFtpc < mEtaSymFtpcCuts[0] || etaSymFtpc >= mEtaSymFtpcCuts[1])) {
    mEtaSymFtpcCutN++;
    mGoodEventN--;
    return kFALSE;
  }

  return kTRUE;
}

//-----------------------------------------------------------------------

Bool_t StFlowCutEvent::CheckEtaSymmetry(StMuEvent* pMuEvent) {
  // Returns kTRUE if muevent survives this Eta symmetry cut
  // Call at the end of the event after doing CheckTrack for each track
  // If kFALSE you should delete the last event

  if (((StFlowCutTrack::EtaSymPosTpc() == 0 || StFlowCutTrack::EtaSymNegTpc() == 0) &&     // at least one half is empty
       !(StFlowCutTrack::EtaSymPosTpc() == 0 &&  StFlowCutTrack::EtaSymNegTpc() == 0)) ||  // but not both halves 
      ((StFlowCutTrack::EtaSymPosFtpc() == 0 || StFlowCutTrack::EtaSymNegFtpc() == 0) &&   // at least one FTPC is empty
       !(StFlowCutTrack::EtaSymPosFtpc() == 0 && StFlowCutTrack::EtaSymNegFtpc() == 0))) { // but not both FTPCs 
      // This looks ugly because there is no XOR and events w/o the FTPC or TPC switched on will be cut, otherwise.
    return kFALSE; // possible beam gas event
  }

  // Tpc
  float etaSymPosTpcN = (float)StFlowCutTrack::EtaSymPosTpc();
  float etaSymNegTpcN = (float)StFlowCutTrack::EtaSymNegTpc();
  float etaSymTpc = (etaSymPosTpcN - etaSymNegTpcN) / (etaSymPosTpcN + etaSymNegTpcN);
  // Ftpc
  float etaSymPosFtpcN = (float)StFlowCutTrack::EtaSymPosFtpc();
  float etaSymNegFtpcN = (float)StFlowCutTrack::EtaSymNegFtpc();
  float etaSymFtpc = (etaSymPosFtpcN - etaSymNegFtpcN) / (etaSymPosFtpcN + etaSymNegFtpcN);
  StFlowCutTrack::EtaSymClear();

  const StThreeVectorF& vertex = pMuEvent->primaryVertexPosition();
  Float_t vertexZ = vertex.z();
  // Tpc
  etaSymTpc += (Flow::etaSymZSlopeTpc * vertexZ); // correction for acceptance
  etaSymTpc *= ::sqrt((double)(etaSymPosTpcN + etaSymNegTpcN)); // corrected for statistics
  // Ftpc
  etaSymFtpc += (Flow::etaSymZSlopeFtpc * vertexZ); // correction for acceptance
  etaSymFtpc *= ::sqrt((double)(etaSymPosFtpcN + etaSymNegFtpcN)); // corrected for statistics

  if (mEtaSymTpcCuts[1] > mEtaSymTpcCuts[0] && 
      (etaSymTpc < mEtaSymTpcCuts[0] || etaSymTpc >= mEtaSymTpcCuts[1])) {
    mEtaSymTpcCutN++;
    mGoodEventN--;
    return kFALSE;
  }

  else if (mEtaSymFtpcCuts[1] > mEtaSymFtpcCuts[0] && 
      (etaSymFtpc < mEtaSymFtpcCuts[0] || etaSymFtpc >= mEtaSymFtpcCuts[1])) {
    mEtaSymFtpcCutN++;
    mGoodEventN--;
    return kFALSE;
  }

  return kTRUE;

}

//-----------------------------------------------------------------------

void StFlowCutEvent::PrintCutList() {
  // Prints the list of cuts

  cout << "#######################################################" << endl;
  cout << "# Primary Vertex Triggered Events= " << mEventN << endl;
  cout << "# Event Cut List:" << endl;
  cout << "#   Mult cuts= " << mMultCuts[0] << ", " << mMultCuts[1]
       << " :\t Events Cut= " << mMultCut << endl;
  cout << "#   Centrality cuts= " << mCentCuts[0] << ", " << mCentCuts[1]
       << " :\t Events Cut= " << mCentCut << endl;
  cout << "#   VertexX cuts= " << mVertexXCuts[0] << ", " << mVertexXCuts[1]
       << " :\t Events Cut= " << mVertexXCut << "\t (" <<  setprecision(3) << 
    (float)mVertexXCut/(float)mEventN/perCent << "% cut)" << endl;
  cout << "#   VertexY cuts= " << mVertexYCuts[0] << ", " << mVertexYCuts[1]
       << " :\t Events Cut= " << mVertexYCut << "\t (" <<  setprecision(3) << 
    (float)mVertexYCut/(float)mEventN/perCent << "% cut)" << endl;
  cout << "#   VertexZ cuts= " << mVertexZCuts[0] << ", " << mVertexZCuts[1]
       << " :\t Events Cut= " << mVertexZCut << "\t (" <<  setprecision(3) << 
    (float)mVertexZCut/(float)mEventN/perCent << "% cut)" << endl;
  cout << "#   EtaSymTpc cuts= " << mEtaSymTpcCuts[0] << ", " << mEtaSymTpcCuts[1] 
       << " :\t Events Cut= " << mEtaSymTpcCutN << "\t (" <<  setprecision(3) << 
    (float)mEtaSymTpcCutN/(float)mEventN/perCent << "% cut)" << endl;
  cout << "#   EtaSymFtpc cuts= " << mEtaSymFtpcCuts[0] << ", " << mEtaSymFtpcCuts[1] 
       << " :\t Events Cut= " << mEtaSymFtpcCutN << "\t (" <<  setprecision(3) << 
    (float)mEtaSymFtpcCutN/(float)mEventN/perCent << "% cut)" << endl;
//   cout << "#   Trigger cut= " << mTriggerCut 
//        << " :\t\t Events Cut= " << mTriggerCutN << "\t (" <<  setprecision(3) << 
//     (float)mTriggerCutN/(float)mEventN/perCent << "% cut)" << endl;
  cout << "# Good Events = " << mGoodEventN << ", " << setprecision(3) <<
    (float)mGoodEventN/(float)mEventN/perCent << "%" << endl;
  cout << "#######################################################" << endl;

}

//
// $Log: StFlowCutEvent.cxx,v $
// Revision 1.46  2010/09/30 19:30:23  posk
// Instead of reversing the weight for negative pseudrapidity for odd harmonics,
// it is now done only for the first harmonic.
// Recentering is now done for all harmonics.
//
// Revision 1.45  2009/08/04 23:00:27  posk
// Reads year 7 MuDsts.
//
// Revision 1.44  2007/02/06 18:57:48  posk
// In Lee Yang Zeros method, introduced recentering of Q vector.
// Reactivated eta symmetry cut.
//
// Revision 1.43  2006/07/06 20:29:45  posk
// Changed the dynamic_cast of GetInputDS("MuDst") to a const cast.
//
// Revision 1.42  2006/07/06 16:50:12  posk
// Commented out lines added in version 1.41.
//
// Revision 1.41  2006/05/02 21:47:47  jeromel
// Bug fix: un-protected call to method
//
// Revision 1.40  2006/02/22 19:27:03  posk
// Changes needed for the MuDst
// Stopped using eventSummary()
//
// Revision 1.39  2005/03/03 17:22:01  posk
// Initialized pFlowEvent in the constructors.
//
// Revision 1.38  2005/02/11 23:22:10  posk
// Made TriggersFound() work for pico files.
//
// Revision 1.37  2005/02/08 22:13:08  psoren
// initialized flowTriggerBitMap=0 for each event
//
// Revision 1.36  2005/02/08 20:57:36  psoren
// trigger and centrality selections were updated for all runs after run 4 to be compatible with trigger collections. Added TriggersFound() and GetFlowTriggerBitMap() functions.
//
// Revision 1.35  2004/08/24 20:24:32  oldi
// Minor modifications to avoid compiler warnings.
// Small bug fix (didn't affect anyone yet).
//
// Revision 1.34  2004/07/07 22:31:06  oldi
// Fix of a severe bug which threw away about 1/3 of all events by cutting on
// vertex_x < 0 && vertex_y < 0 && vertex_z < 0 instead of fabs(...) < 0.
// Thanks to Kirill, who found this (and suffered most).
//
// Revision 1.33  2004/05/31 20:09:35  oldi
// PicoDst format changed (Version 7) to hold ZDC SMD information.
// Trigger cut modified to comply with TriggerCollections.
// Centrality definition for 62 GeV data introduced.
// Minor bug fixes.
//
// Revision 1.32  2004/05/05 21:13:45  aihong
// Gang's code for ZDC-SMD added
//
// Revision 1.31  2003/09/02 17:58:11  perev
// gcc 3.2 updates + WarnOff
//
// Revision 1.30  2003/07/30 22:05:28  oldi
// To get rid of beam gas events events with one empty FTPC or one empty half of
// the TPC are removed.
//
// Revision 1.29  2003/02/25 19:28:38  posk
// Changed a few unimportant default cuts.
//
// Revision 1.28  2003/01/10 16:41:53  oldi
// Several changes to comply with FTPC tracks:
// - Switch to include/exclude FTPC tracks introduced.
//   The same switch changes the range of the eta histograms.
// - Eta symmetry plots for FTPC tracks added and separated from TPC plots.
// - PhiWgts and related histograms for FTPC tracks split in FarEast, East,
//   West, FarWest (depending on vertex.z()).
// - Psi_Diff plots for 2 different selections and the first 2 harmonics added.
// - Cut to exclude mu-events with no primary vertex introduced.
//   (This is possible for UPC events and FTPC tracks.)
// - Global DCA cut for FTPC tracks added.
// - Global DCA cuts for event plane selection separated for TPC and FTPC tracks.
// - Charge cut for FTPC tracks added.
//
// Revision 1.27  2002/06/10 22:50:56  posk
// pt and eta weighting now default.
// DcaGlobalPart default now 0 to 1 cm.
// Event cut order changed.
//
// Revision 1.26  2002/06/07 22:18:37  kirill
// Introduced MuDst reader
//
// Revision 1.25  2002/05/24 11:04:18  snelling
// Added a cut to remove the events triggered by L3
//
// Revision 1.24  2002/03/15 16:43:21  snelling
// Added a method to recalculate the centrality in StFlowPicoEvent
//
// Revision 1.23  2002/01/30 13:04:10  oldi
// Trigger cut implemented.
//
// Revision 1.22  2001/05/22 20:17:13  posk
// Now can do pseudorapidity subevents.
//
// Revision 1.21  2000/12/12 20:22:05  posk
// Put log comments at end of files.
// Deleted persistent StFlowEvent (old micro DST).
//
// Revision 1.20  2000/11/30 16:40:20  snelling
// Protection agains loading probability pid caused it not to work anymore
// therefore protection removed again
//
// Revision 1.19  2000/09/05 16:11:30  snelling
// Added global DCA, electron and positron
//
// Revision 1.18  2000/08/31 18:58:17  posk
// For picoDST, added version number, runID, and multEta for centrality.
// Added centrality cut when reading picoDST.
// Added pt and eta selections for particles corr. wrt event plane.
//
// Revision 1.17  2000/08/10 23:00:19  posk
// New centralities. pt and eta cuts.
//
// Revision 1.15  2000/07/14 23:49:03  snelling
// Changed to ConstIterator for new StEvent and removed comparison int uint
//
// Revision 1.14  2000/07/12 17:54:33  posk
// Added chi2 and dca cuts. Multiplied EtaSym by ::sqrt(mult).
// Apply cuts when reading picoevent file.
//
// Revision 1.13  2000/06/30 14:48:29  posk
// Using MessageMgr, changed Eta Symmetry cut.
//
// Revision 1.12  2000/06/01 18:26:32  posk
// Increased precision of Track integer data members.
//
// Revision 1.11  2000/05/26 21:29:26  posk
// Protected Track data members from overflow.
//
// Revision 1.9  2000/03/02 23:02:38  posk
// Changed extensions from .hh and .cc to .h and .cxx .
//
// Revision 1.5  1999/12/15 22:01:22  posk
// Added StFlowConstants.hh
//
// Revision 1.4  1999/12/04 00:10:30  posk
// Works with the new StEvent
//
// Revision 1.3  1999/11/30 18:52:47  snelling
// First modification for the new StEvent
//
// Revision 1.2  1999/11/24 18:17:09  posk
// Put the methods which act on the data in with the data in StFlowEvent.
//
// Revision 1.1  1999/11/05 00:06:41  posk
// First versions of Flow cut classes.
//

---