#include "AliMUONTrack.h"
#include "AliMUONConstants.h"
#include "AliMUONVTrackStore.h"
-#include "AliMUONTrackExtrap.h"
+#include "AliMUONTrackParam.h"
#include "AliESDMuonTrack.h"
-#include "AliRunLoader.h"
#include "AliStack.h"
-#include "AliHeader.h"
+#include "AliLog.h"
#include "TDatabasePDG.h"
#include "TParticle.h"
fWeight(1)
{
/// constructor
- //AliMUONTrackLight();
- FillFromESD(muonTrack);
+ fPgen.SetPxPyPzE(0.,0.,0.,0.);
+ for (Int_t npar = 0; npar < fgkNParentsMax; npar++){
+ fParentPDGCode[npar] = -1;
+ fParentPythiaLine[npar] = -1;
+ }
+ for (Int_t i = 0; i < 4; i++){
+ fQuarkPDGCode[i] = -1;
+ fQuarkPythiaLine[i] = -1;
+ }
+ FillFromESD(muonTrack);
}
//============================================
void AliMUONTrackLight::FillFromAliMUONTrack(AliMUONTrack *trackReco,Double_t zvert){
/// this method sets the muon reconstructed momentum according to the value given by AliMUONTrack
- AliMUONTrackParam trPar(*((AliMUONTrackParam*) (trackReco->GetTrackParamAtCluster()->First())));
- // AliMUONTrackParam *trPar = trackReco->GetTrackParamAtVertex();
- AliMUONTrackExtrap::ExtrapToVertex(&trPar,0.,0.,0.,0.,0.);
- this->SetCharge(Int_t(TMath::Sign(1.,trPar.GetInverseBendingMomentum())));
- this->SetPxPyPz(trPar.Px(),trPar.Py(), trPar.Pz());
+ AliMUONTrackParam* trPar = trackReco->GetTrackParamAtVertex();
+ if (!trPar) {
+ AliError("The track must contain the parameters at vertex");
+ return;
+ }
+ this->SetCharge(Int_t(TMath::Sign(1.,trPar->GetInverseBendingMomentum())));
+ this->SetPxPyPz(trPar->Px(),trPar->Py(), trPar->Pz());
this->SetTriggered(trackReco->GetMatchTrigger());
- Double_t xyz[3] = { trPar.GetNonBendingCoor(),
- trPar.GetBendingCoor(),
- zvert};
+ Double_t xyz[3] = { trPar->GetNonBendingCoor(),
+ trPar->GetBendingCoor(),
+ trPar->GetZ()};
+ if (zvert!=-9999) xyz[2] = zvert;
this->SetVertex(xyz);
}
fPrec.SetPxPyPzE(px,py,pz,energy);
}
-//============================================
-TParticle* AliMUONTrackLight::FindRefTrack(
- AliMUONTrack* trackReco, AliMUONVTrackStore* trackRefArray,
- AliStack* stack, Bool_t tempfix
- )
-{
- /// Find the Monte Carlo (MC) particle that corresponds to a given reconstructed track.
- /// @param trackReco This is the reconstructed track for which we want to find a
- /// corresponding MC particle.
- /// @param trackRefArray The list of MC reference tracks as generated by
- /// AliMUONRecoCheck::ReconstructedTracks for example.
- /// @param stack The MC stack of simulated particles.
- /// @param tempfix This specifies if a temporary fix should be applied, where we only
- /// check if the first hit on chamber 1, the vertex momentum, the X-Y vertex
- /// coordinate and X-Y slope match between 'trackReco' and a MC reference
- /// track in 'trackRefArray'.
- /// This temporary fix is necessary while AliMUONTrack objects are no longer
- /// stored after reconstruction and the hit information is not completely
- /// stored in the ESD data.
-
- TParticle *part = 0;
- const Double_t kSigma2Cut = 16; // 4 sigmas cut, kSigma2Cut = 4*4
- Int_t compPart = 0;
- TIter next(trackRefArray->CreateIterator());
- AliMUONTrack* trackRef;
- while ( (trackRef = static_cast<AliMUONTrack*>(next())) ) {
- // check if trackRef is compatible with trackReco:
- //routine returns for each chamber a yes/no information if the
- //hit of rec. track and hit of referenced track are compatible
- Bool_t *compTrack = trackRef->CompatibleTrack(trackReco,kSigma2Cut);
- Int_t iTrack = 0;
- if (tempfix)
- {
- // All we can check with this temporary fix is that the first hit on chamber 1
- // is the same and that the particles momentum, slope and vertex X and Y are
- // compatible within resolution.
- if (compTrack[0]) iTrack++;
- AliMUONTrackParam* paramA = trackRef->GetTrackParamAtVertex();
- AliMUONTrackParam* paramB = trackReco->GetTrackParamAtVertex();
- if (paramA != NULL and paramB != NULL)
- {
- // Fetch the variances.
- Double_t varX = paramA->GetCovariances()[0][0] + paramB->GetCovariances()[0][0];
- Double_t varSlopeX = paramA->GetCovariances()[1][1] + paramB->GetCovariances()[1][1];
- Double_t varY = paramA->GetCovariances()[2][2] + paramB->GetCovariances()[2][2];
- Double_t varSlopeY = paramA->GetCovariances()[3][3] + paramB->GetCovariances()[3][3];
- Double_t varInvP = paramA->GetCovariances()[4][4] + paramB->GetCovariances()[4][4];
- // We might have to fill these variances with defaults.
- if (varX == 0) varX = AliMUONConstants::DefaultNonBendingReso2();
- if (varSlopeX == 0) varSlopeX = AliMUONConstants::DefaultNonBendingReso2();
- if (varY == 0) varY = AliMUONConstants::DefaultBendingReso2();
- if (varSlopeY == 0) varSlopeY = AliMUONConstants::DefaultBendingReso2();
- if (varInvP == 0)
- {
- // Use ~10% resolution for momentum.
- Double_t sigmaA = 0.1 * paramA->GetInverseBendingMomentum();
- Double_t sigmaB = 0.1 * paramB->GetInverseBendingMomentum();
- varInvP = sigmaA*sigmaA + sigmaB*sigmaB;
- }
- // Calculate the differences between parameters.
- Double_t diffX = paramA->GetNonBendingCoor() - paramB->GetNonBendingCoor();
- Double_t diffSlopeX = paramA->GetNonBendingSlope() - paramB->GetNonBendingSlope();
- Double_t diffY = paramA->GetBendingCoor() - paramB->GetBendingCoor();
- Double_t diffSlopeY = paramA->GetBendingSlope() - paramB->GetBendingSlope();
- Double_t diffInvP = paramA->GetInverseBendingMomentum() - paramB->GetInverseBendingMomentum();
- // Check that all the parameters are within kSigma2Cut limit.
- if (diffX*diffX / varX < kSigma2Cut and diffY*diffY / varY < kSigma2Cut) iTrack++;
- if (diffSlopeX*diffSlopeX / varSlopeX < kSigma2Cut and diffSlopeY*diffSlopeY / varSlopeY < kSigma2Cut) iTrack++;
- if (diffInvP*diffInvP / varInvP < kSigma2Cut) iTrack++;
- }
- }
- else
- iTrack = this->TrackCheck(compTrack); //returns number of validated conditions
-
- if (iTrack==4) {
- compPart++;
- Int_t trackID = trackRef->GetTrackID();
- this->SetTrackPythiaLine(trackID);
- part = stack->Particle(trackID);
- fTrackPDGCode = part->GetPdgCode();
- }
- }
- if (compPart>1) {
- AliFatal("More than one particle compatible with the reconstructed track.");
- }
- return part;
-}
-
-//============================================
-Int_t AliMUONTrackLight::TrackCheck(Bool_t *compTrack){
- /// Apply reconstruction requirements
- /// Return number of validated conditions
- /// If all the tests are verified then TrackCheck = 4 (good track)
-
- Int_t iTrack = 0;
- Int_t hitsInLastStations = 0;
-
- // apply reconstruction requirements
- if (compTrack[0] || compTrack[1]) iTrack++; // at least one hit in st. 0
- if (compTrack[2] || compTrack[3]) iTrack++; // at least one hit in st. 1
- if (compTrack[4] || compTrack[5]) iTrack++; // at least one hit in st. 2
- for (Int_t ch = 6; ch < AliMUONConstants::NTrackingCh(); ch++) {
- if (compTrack[ch]) hitsInLastStations++;
- }
- if (hitsInLastStations > 2) iTrack++; // at least 3 hits in st. 3 & 4
- return iTrack;
-}
-
//============================================
void AliMUONTrackLight::FillMuonHistory(AliStack *stack, TParticle *part){
/// scans the muon history to determine parents pdg code and pythia line
this->GetParentFlavour(0), TMath::Abs(this->GetQuarkPDGCode(countP)))
);
- Int_t pdg = this->GetQuarkPDGCode(countP), line = this->GetQuarkPythiaLine(countP);
+ pdg = this->GetQuarkPDGCode(countP);
+ Int_t line = this->GetQuarkPythiaLine(countP);
this->ResetQuarkInfo();
while(TMath::Abs(pdg) != this->GetParentFlavour(0)){//pdg of q,g in Pythia listing following the wrong string end
//must coincide with the flavour of the last fragmented mother
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff