// --- ROOT system ---
#include <TMath.h>
-#include <TString.h>
#include <TList.h>
+#include "TParticle.h"
+#include "TDatabasePDG.h"
+#include "TVector3.h"
//---- ANALYSIS system ----
-#include "AliLog.h"
#include "AliMCAnalysisUtils.h"
+#include "AliCaloTrackReader.h"
#include "AliStack.h"
-#include "TParticle.h"
#include "AliGenPythiaEventHeader.h"
+#include "AliAODMCParticle.h"
ClassImp(AliMCAnalysisUtils)
-
//________________________________________________
-AliMCAnalysisUtils::AliMCAnalysisUtils() :
-TObject(), fCurrentEvent(-1), fDebug(-1),
-fJetsList(new TList), fMCGenerator("PYTHIA")
+ AliMCAnalysisUtils::AliMCAnalysisUtils() :
+ TObject(), fCurrentEvent(-1), fDebug(-1),
+ fJetsList(new TList), fMCGenerator("PYTHIA")
{
- //Ctor
+ //Ctor
}
//____________________________________________________________________________
-AliMCAnalysisUtils::AliMCAnalysisUtils(const AliMCAnalysisUtils & mcutils) :
-TObject(mcutils), fCurrentEvent(mcutils.fCurrentEvent), fDebug(mcutils.fDebug),
-fJetsList(mcutils.fJetsList), fMCGenerator(mcutils.fMCGenerator)
+AliMCAnalysisUtils::~AliMCAnalysisUtils()
{
- // cpy ctor
-
+ // Remove all pointers.
+
+ if (fJetsList) {
+ fJetsList->Clear();
+ delete fJetsList ;
+ }
}
//_________________________________________________________________________
-AliMCAnalysisUtils & AliMCAnalysisUtils::operator = (const AliMCAnalysisUtils & mcutils)
+Int_t AliMCAnalysisUtils::CheckCommonAncestor(const Int_t index1, const Int_t index2, AliCaloTrackReader* reader,
+ Int_t & ancPDG, Int_t & ancStatus, TLorentzVector & momentum, TVector3 & prodVertex)
{
- // assignment operator
-
- if(&mcutils == this) return *this;
- fCurrentEvent = mcutils.fCurrentEvent ;
- fDebug = mcutils.fDebug;
- fJetsList = mcutils.fJetsList;
- fMCGenerator = mcutils.fMCGenerator;
-
- return *this;
-
+ //Check the first common ancestor of 2 clusters, given the most likely labels of the primaries generating such clusters.
+ Int_t label1[100];
+ Int_t label2[100];
+ label1[0]= index1;
+ label2[0]= index2;
+ Int_t counter1 = 0;
+ Int_t counter2 = 0;
+
+ if(label1[0]==label2[0]) {
+ //printf("AliMCAnalysisUtils::CheckCommonAncestor() - Already the same label: %d\n",label1[0]);
+ counter1=1;
+ counter2=1;
+ }
+ else{
+ if(reader->ReadAODMCParticles()){
+ TClonesArray * mcparticles = reader->GetAODMCParticles(0);
+
+ Int_t label=label1[0];
+ while(label > -1 && counter1 < 99){
+ counter1++;
+ AliAODMCParticle * mom = (AliAODMCParticle *) mcparticles->At(label);
+ if(mom){
+ label = mom->GetMother() ;
+ label1[counter1]=label;
+ }
+ //printf("\t counter %d, label %d\n", counter1,label);
+ }
+ //printf("Org label2=%d,\n",label2[0]);
+ label=label2[0];
+ while(label > -1 && counter2 < 99){
+ counter2++;
+ AliAODMCParticle * mom = (AliAODMCParticle *) mcparticles->At(label);
+ if(mom){
+ label = mom->GetMother() ;
+ label2[counter2]=label;
+ }
+ //printf("\t counter %d, label %d\n", counter2,label);
+ }
+ }//AOD MC
+ else { //Kine stack from ESDs
+ AliStack * stack = reader->GetStack();
+ Int_t label=label1[0];
+ while(label > -1 && counter1 < 99){
+ counter1++;
+ TParticle * mom = stack->Particle(label);
+ if(mom){
+ label = mom->GetFirstMother() ;
+ label1[counter1]=label;
+ }
+ //printf("\t counter %d, label %d\n", counter1,label);
+ }
+ //printf("Org label2=%d,\n",label2[0]);
+ label=label2[0];
+ while(label > -1 && counter2 < 99){
+ counter2++;
+ TParticle * mom = stack->Particle(label);
+ if(mom){
+ label = mom->GetFirstMother() ;
+ label2[counter2]=label;
+ }
+ //printf("\t counter %d, label %d\n", counter2,label);
+ }
+ }// Kine stack from ESDs
+ }//First labels not the same
+
+ if((counter1==99 || counter2==99) && fDebug >=0) printf("AliMCAnalysisUtils::CheckCommonAncestor() - Genealogy too large c1: %d, c2= %d\n", counter1, counter2);
+ //printf("CheckAncestor:\n");
+ Int_t commonparents = 0;
+ Int_t ancLabel = -1;
+ //printf("counters %d %d \n",counter1, counter2);
+ for (Int_t c1 = 0; c1 < counter1; c1++) {
+ for (Int_t c2 = 0; c2 < counter2; c2++) {
+ if(label1[c1]==label2[c2] && label1[c1]>-1) {
+ ancLabel = label1[c1];
+ commonparents++;
+ if(reader->ReadAODMCParticles()){
+ AliAODMCParticle * mom = (AliAODMCParticle *) reader->GetAODMCParticles(0)->At(label1[c1]);
+ if (mom) {
+ ancPDG = mom->GetPdgCode();
+ ancStatus = mom->GetStatus();
+ momentum.SetPxPyPzE(mom->Px(),mom->Py(),mom->Pz(),mom->E());
+ prodVertex.SetXYZ(mom->Xv(),mom->Yv(),mom->Zv());
+ }
+ }
+ else {
+ TParticle * mom = (reader->GetStack())->Particle(label1[c1]);
+ if (mom) {
+ ancPDG = mom->GetPdgCode();
+ ancStatus = mom->GetStatusCode();
+ mom->Momentum(momentum);
+ prodVertex.SetXYZ(mom->Vx(),mom->Vy(),mom->Vz());
+ }
+ }
+ //First ancestor found, end the loops
+ counter1=0;
+ counter2=0;
+ }//Ancestor found
+ }//second cluster loop
+ }//first cluster loop
+
+ return ancLabel;
}
-//____________________________________________________________________________
-AliMCAnalysisUtils::~AliMCAnalysisUtils()
+//_________________________________________________________________________
+Int_t AliMCAnalysisUtils::CheckOrigin(const Int_t * label, const Int_t nlabels, AliCaloTrackReader* reader, const Int_t input = 0)
{
- // Remove all pointers.
-
- if (fJetsList) {
- fJetsList->Clear();
- delete fJetsList ;
- }
-
+ //Play with the montecarlo particles if available
+ Int_t tag = 0;
+
+ if(nlabels<=0) {
+ printf("AliMCAnalysisUtils::CheckOrigin(nlabel<=0) - No MC labels available, please check!!!\n");
+ return kMCBadLabel;
+ }
+
+ //Select where the information is, ESD-galice stack or AOD mcparticles branch
+ if(reader->ReadStack()){
+ tag = CheckOriginInStack(label, nlabels, reader->GetStack());
+ }
+ else if(reader->ReadAODMCParticles()){
+ tag = CheckOriginInAOD(label, nlabels, reader->GetAODMCParticles(input));
+ }
+
+ return tag ;
}
//_________________________________________________________________________
-Int_t AliMCAnalysisUtils::CheckOrigin(const Int_t label, AliStack * stack) const {
- //Play with the MC stack if available
- //Check origin of the candidates, good for PYTHIA
-
- if(!stack) AliFatal("Stack is not available, check analysis settings in configuration file, STOP!!");
- // printf("label %d, ntrack %d, nprim %d\n",label, stack->GetNtrack(), stack->GetNprimary());
-// for(Int_t i = 0; i< stack->GetNprimary(); i++){
-// TParticle *particle = stack->Particle(i);
-// //particle->Print();
-// }
- if(label >= 0 && label < stack->GetNtrack()){
- //Mother
+Int_t AliMCAnalysisUtils::CheckOrigin(const Int_t label, AliCaloTrackReader* reader, const Int_t input = 0)
+{
+ //Play with the montecarlo particles if available
+ Int_t tag = 0;
+
+ if(label<0) {
+ printf("AliMCAnalysisUtils::CheckOrigin(label<0) - No MC labels available, please check!!!\n");
+ return kMCBadLabel;
+ }
+
+ Int_t labels[]={label};
+
+ //Select where the information is, ESD-galice stack or AOD mcparticles branch
+ if(reader->ReadStack()){
+ tag = CheckOriginInStack(labels, 1,reader->GetStack());
+ }
+ else if(reader->ReadAODMCParticles()){
+ tag = CheckOriginInAOD(labels, 1,reader->GetAODMCParticles(input));
+ }
+
+ return tag ;
+}
+
+//_________________________________________________________________________
+Int_t AliMCAnalysisUtils::CheckOriginInStack(const Int_t *labels, const Int_t nlabels, AliStack* stack)
+{
+ // Play with the MC stack if available. Tag particles depending on their origin.
+ // Do same things as in CheckOriginInAOD but different input.
+
+ //generally speaking, label is the MC label of a reconstructed
+ //entity (track, cluster, etc) for which we want to know something
+ //about its heritage, but one can also use it directly with stack
+ //particles not connected to reconstructed entities
+
+ if(!stack) {
+ if (fDebug >=0)
+ printf("AliMCAnalysisUtils::CheckOriginInStack() - Stack is not available, check analysis settings in configuration file, STOP!!\n");
+ return -1;
+ }
+
+ Int_t tag = 0;
+ Int_t label=labels[0];//Most significant particle contributing to the cluster
+
+ if(label >= 0 && label < stack->GetNtrack()){
+ //MC particle of interest is the "mom" of the entity
TParticle * mom = stack->Particle(label);
- Int_t mPdg = TMath::Abs(mom->GetPdgCode());
- Int_t mStatus = mom->GetStatusCode() ;
- Int_t iParent = mom->GetFirstMother() ;
- if(fDebug > 0 && label < 8 ) printf("AliMCAnalysisUtils::CheckOrigin: Mother is parton %d\n",iParent);
+ Int_t iMom = label;
+ Int_t mPdgSign = mom->GetPdgCode();
+ Int_t mPdg = TMath::Abs(mPdgSign);
+ Int_t mStatus = mom->GetStatusCode() ;
+ Int_t iParent = mom->GetFirstMother() ;
+ if(fDebug > 0 && label < 8 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - Mother is parton %d\n",iParent);
- //GrandParent
- TParticle * parent = new TParticle ;
+ //GrandParent of the entity
+ TParticle * parent = NULL;
Int_t pPdg = -1;
Int_t pStatus =-1;
- if(iParent > 0){
+ if(iParent >= 0){
parent = stack->Particle(iParent);
- pPdg = TMath::Abs(parent->GetPdgCode());
- pStatus = parent->GetStatusCode();
+ if(parent){
+ pPdg = TMath::Abs(parent->GetPdgCode());
+ pStatus = parent->GetStatusCode();
+ }
}
- else if(fDebug > 0 ) printf("AliMCAnalysisUtils::CheckOrigin: Parent with label %d\n",iParent);
+ else if(fDebug > 0 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - Parent with label %d\n",iParent);
- //return tag
- if(mPdg == 22){
- if(mStatus == 1){
- if(fMCGenerator == "PYTHIA"){
- if(iParent < 8 && iParent > 5) {//outgoing partons
- if(pPdg == 22) return kMCPrompt;
- else return kMCFragmentation;
- }//Outgoing partons
- else if(pStatus == 11){//Decay
- if(pPdg == 111) return kMCPi0Decay ;
- else if (pPdg == 321) return kMCEtaDecay ;
- else return kMCOtherDecay ;
- }//Decay
- else return kMCISR; //Initial state radiation
- }//PYTHIA
-
- else if(fMCGenerator == "HERWIG"){
- if(pStatus < 197){//Not decay
- while(1){
- if(parent->GetFirstMother()<=5) break;
- iParent = parent->GetFirstMother();
- parent=stack->Particle(iParent);
- pStatus= parent->GetStatusCode();
- pPdg = parent->GetPdgCode();
- }//Look for the parton
-
- if(iParent < 8 && iParent > 5) {
- if(pPdg == 22) return kMCPrompt;
- else return kMCFragmentation;
- }
- return kMCISR;//Initial state radiation
- }//Not decay
- else{//Decay
- if(pPdg == 111) return kMCPi0Decay ;
- else if (pPdg == 321) return kMCEtaDecay ;
- else return kMCOtherDecay ;
- }//Decay
- }//HERWIG
- else return kMCUnknown;
- }//Status 1 : Pythia generated
- else if(mStatus == 0){
- if(pPdg ==22 || pPdg ==11|| pPdg == 2112 || pPdg == 211 ||
- pPdg == 321 || pPdg == 2212 || pPdg == 130 || pPdg == 13 )
- return kMCConversion ;
- if(pPdg == 111) return kMCPi0Decay ;
- else if (pPdg == 221) return kMCEtaDecay ;
- else return kMCOtherDecay ;
+ if(fDebug > 2 ) {
+ printf("AliMCAnalysisUtils::CheckOriginInStack() - Cluster most contributing mother and its parent: \n");
+ printf("\t Mother label %d, pdg %d, status %d\n",iMom, mPdg, mStatus);
+ printf("\t Parent label %d, pdg %d, status %d\n",iParent, pPdg, pStatus);
+ }
+
+ //Check if "mother" of entity is converted, if not, get the first non converted mother
+ if((mPdg == 22 || mPdg == 11) && (pPdg == 22 || pPdg == 11) && mStatus == 0){
+ SetTagBit(tag,kMCConversion);
+ //Check if the mother is photon or electron with status not stable
+ while ((pPdg == 22 || pPdg == 11) && mStatus != 1) {
+ //Mother
+ iMom = mom->GetFirstMother();
+ mom = stack->Particle(iMom);
+ mPdgSign = mom->GetPdgCode();
+ mPdg = TMath::Abs(mPdgSign);
+ mStatus = mom->GetStatusCode() ;
+ iParent = mom->GetFirstMother() ;
+ if(fDebug > 0 && label < 8 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - Mother is parton %d\n",iParent);
+
+ //GrandParent
+ if(iParent >= 0){
+ parent = stack->Particle(iParent);
+ if(parent){
+ pPdg = TMath::Abs(parent->GetPdgCode());
+ pStatus = parent->GetStatusCode();
+ }
+ }
+ else {// in case of gun/box simulations
+ pPdg = 0;
+ pStatus = 0;
+ break;
+ }
+ }//while
+ if(fDebug > 2 ) {
+ printf("AliMCAnalysisUtils::CheckOriginInStack() - Converted photon/electron: \n");
+ printf("\t Mother label %d, pdg %d, status %d\n",iMom, mPdg, mStatus);
+ printf("\t Parent label %d, pdg %d, status %d\n",iParent, pPdg, pStatus);
+ }
+
+ }//mother and parent are electron or photon and have status 0
+ else if((mPdg == 22 || mPdg == 11) && mStatus == 0){
+ //Still a conversion but only one electron/photon generated. Just from hadrons but not decays.
+ if(pPdg == 2112 || pPdg == 211 || pPdg == 321 ||
+ pPdg == 2212 || pPdg == 130 || pPdg == 13 ) {
+ SetTagBit(tag,kMCConversion);
+ iMom = mom->GetFirstMother();
+ mom = stack->Particle(iMom);
+ mPdgSign = mom->GetPdgCode();
+ mPdg = TMath::Abs(mPdgSign);
+
+ if(fDebug > 2 ) {
+ printf("AliMCAnalysisUtils::CheckOriginInStack() - Converted hadron: \n");
+ printf("\t Mother label %d, pdg %d, status %d\n",iMom, mPdg, mStatus);
+ }
+ }//hadron converted
+
+ //Comment for the next lines, we do not check the parent of the hadron for the moment.
+ //iParent = mom->GetFirstMother() ;
+ //if(fDebug > 0 && label < 8 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - Mother is parton %d\n",iParent);
+
+ //GrandParent
+ //if(iParent >= 0){
+ // parent = stack->Particle(iParent);
+ // pPdg = TMath::Abs(parent->GetPdgCode());
+ //}
+ }
+ // conversion into electrons/photons checked
+
+ //first check for typical charged particles
+ if (mPdg == 13) SetTagBit(tag,kMCMuon);
+ else if(mPdg == 211) SetTagBit(tag,kMCPion);
+ else if(mPdg == 321) SetTagBit(tag,kMCKaon);
+ else if(mPdgSign == 2212) SetTagBit(tag,kMCProton);
+ else if(mPdgSign == -2212) SetTagBit(tag,kMCAntiProton);
+ else if(mPdgSign == 2112) SetTagBit(tag,kMCNeutron);
+ else if(mPdgSign == -2112) SetTagBit(tag,kMCAntiNeutron);
+
+ //check for pi0 and eta (shouldn't happen unless their decays were turned off)
+ else if(mPdg == 111) {
+ SetTagBit(tag,kMCPi0Decay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - First mother is directly pi0, not decayed by generator \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iMom, stack, tag); //set to kMCPi0 if 2 gammas in same cluster
+ }
+ else if(mPdg == 221) {
+ SetTagBit(tag,kMCEtaDecay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - First mother is directly eta, not decayed by generator \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iMom, stack, tag); //set to kMCEta if 2 gammas in same cluster
+ }
+ //Photons
+ else if(mPdg == 22){
+ SetTagBit(tag,kMCPhoton);
+ if(mStatus == 1){ //undecayed particle
+ if(fMCGenerator == "PYTHIA"){
+ if(iParent < 8 && iParent > 5) {//outgoing partons
+ if(pPdg == 22) SetTagBit(tag,kMCPrompt);
+ else SetTagBit(tag,kMCFragmentation);
+ }//Outgoing partons
+ else if(iParent <= 5) {
+ SetTagBit(tag, kMCISR); //Initial state radiation
+ }
+ else if(pStatus == 11){//Decay
+ if(pPdg == 111) {
+ SetTagBit(tag,kMCPi0Decay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - PYTHIA pi0 decay photon, parent pi0 with status 11 \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iParent, stack, tag); //set to kMCPi0 if 2 gammas in same cluster
+ }
+ else if (pPdg == 221) {
+ SetTagBit(tag, kMCEtaDecay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - PYTHIA eta decay photon, parent pi0 with status 11 \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iParent, stack, tag);//set to kMCEta if 2 gammas in same cluster
+ }
+ else SetTagBit(tag,kMCOtherDecay);
+ }//Decay
+ else {
+ if(fDebug > 1 && parent) printf("AliMCAnalysisUtils::CheckOrigingInStack() - what is it in PYTHIA? Wrong generator setting? Mother mPdg %d, status %d \n Parent iParent %d, pPdg %d %s, status %d\n",
+ mPdg, mStatus,iParent, pPdg, parent->GetName(),pStatus);
+ if(pPdg == 111) {
+ SetTagBit(tag,kMCPi0Decay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - PYTHIA pi0 decay photon, parent pi0 with status 11 \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iParent, stack, tag); //set to kMCPi0 if 2 gammas in same cluster
+ }
+ else if (pPdg == 221) {
+ SetTagBit(tag, kMCEtaDecay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - PYTHIA eta decay photon, parent pi0 with status 11 \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iParent, stack, tag);//set to kMCEta if 2 gammas in same cluster
+ }
+ else SetTagBit(tag,kMCOtherDecay);
+ }
+ }//PYTHIA
+
+ else if(fMCGenerator == "HERWIG"){
+ if(pStatus < 197){//Not decay
+ while(1){
+ if(parent){
+ if(parent->GetFirstMother()<=5) break;
+ iParent = parent->GetFirstMother();
+ parent=stack->Particle(iParent);
+ pStatus= parent->GetStatusCode();
+ pPdg = TMath::Abs(parent->GetPdgCode());
+ } else break;
+ }//Look for the parton
+
+ if(iParent < 8 && iParent > 5) {
+ if(pPdg == 22) SetTagBit(tag,kMCPrompt);
+ else SetTagBit(tag,kMCFragmentation);
+ }
+ else SetTagBit(tag,kMCISR);//Initial state radiation
+ }//Not decay
+ else{//Decay
+ if(pPdg == 111) {
+ SetTagBit(tag,kMCPi0Decay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - HERWIG pi0 decay photon \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iParent, stack, tag); //set to kMCPi0 if 2 gammas in same cluster
+ }
+ else if (pPdg == 221) {
+ SetTagBit(tag,kMCEtaDecay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - HERWIG eta decay photon \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iParent, stack, tag); //set to kMCEta if 2 gammas in same cluster
+ }
+ else SetTagBit(tag,kMCOtherDecay);
+ }//Decay
+ }//HERWIG
+
+ else SetTagBit(tag,kMCUnknown);
+
+ }//Status 1 : created by event generator
+
+ else if(mStatus == 0){ // geant
+ if(pPdg == 111) {
+ SetTagBit(tag,kMCPi0Decay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - Transport MC pi0 decay photon \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iParent, stack, tag); //set to kMCPi0 if 2 gammas in same cluster
+ }
+ else if (pPdg == 221) {
+ SetTagBit(tag,kMCEtaDecay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInStack() - Transport MC eta decay photon \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iParent, stack, tag); //set to kMCEta if 2 gammas in same cluster
+ }
+ else SetTagBit(tag,kMCOtherDecay);
}//status 0 : geant generated
+
}//Mother Photon
- else if(mPdg == 111) return kMCPi0 ;
- else if(mPdg == 221) return kMCEta ;
- else if(mPdg ==11){
-// if(pPdg !=22 &&mStatus == 0) {
-// printf("Origin electron, pT %f, status %d, parent %s, pstatus %d, vx %f, vy %f, vz %f\n",
-// mom->Pt(),mStatus, parent->GetName(),pStatus,mom->Vx(),mom->Vy(), mom->Vz());
+
+ //Electron check. Where did that electron come from?
+ else if(mPdg == 11){ //electron
+ if(pPdg == 11 && parent){
+ Int_t iGrandma = parent->GetFirstMother();
+ if(iGrandma >= 0) {
+ TParticle* gma = (TParticle*)stack->Particle(iGrandma); //get mother
+ Int_t gPdg = TMath::Abs(gma->GetPdgCode());
+
+ if (gPdg == 23) { SetTagBit(tag,kMCZDecay); } //parent is Z-boson
+ else if (gPdg == 24) { SetTagBit(tag,kMCWDecay); } //parent is W-boson
+ }
+ }
+ SetTagBit(tag,kMCElectron);
+ if(fDebug > 0) printf("AliMCAnalysisUtils::CheckOriginInStack() - Checking ancestors of electrons\n");
+ if (pPdg == 111) { SetTagBit(tag,kMCPi0Decay); } //Pi0 Dalitz decay
+ else if (pPdg == 221) { SetTagBit(tag,kMCEtaDecay); } //Eta Dalitz decay
+ else if((499 < pPdg && pPdg < 600)||(4999 < pPdg && pPdg < 6000)) { SetTagBit(tag,kMCEFromB); } //b-->e decay
+ else if((399 < pPdg && pPdg < 500)||(3999 < pPdg && pPdg < 5000)) { //check charm decay
+ if(parent){
+ Int_t iGrandma = parent->GetFirstMother();
+ if(iGrandma >= 0) {
+ TParticle* gma = (TParticle*)stack->Particle(iGrandma); //get mother of charm
+ Int_t gPdg = TMath::Abs(gma->GetPdgCode());
+ if((499 < gPdg && gPdg < 600)||(4999 < gPdg && gPdg < 6000)) SetTagBit(tag,kMCEFromCFromB); //b-->c-->e
+ else SetTagBit(tag,kMCEFromC); //c-->e
+ } else SetTagBit(tag,kMCEFromC); //c-->e
+ }//parent
+ } else {
+ //if it is not from any of the above, where is it from?
+ if(pPdg > 10000) SetTagBit(tag,kMCUnknown);
+ else SetTagBit(tag,kMCOtherDecay);
+ if(fDebug > 0 && parent) printf("AliMCAnalysisUtils::CheckOriginInStack() - Status %d Electron from other origin: %s (pPdg = %d) %s (mpdg = %d)\n",mStatus,parent->GetName(),pPdg,mom->GetName(),mPdg);
+ }
+ }//electron check
+ //Cluster was made by something else
+ else {
+ if(fDebug > 0) printf("AliMCAnalysisUtils::CheckOriginInStack() - \tSetting kMCUnknown for cluster from %s (pdg = %d, Parent pdg = %d)\n",mom->GetName(),mPdg,pPdg);
+ SetTagBit(tag,kMCUnknown);
+ }
+ }//Good label value
+ else{// Bad label
+
+ if(label < 0 && (fDebug >= 0))
+ printf("AliMCAnalysisUtils::CheckOriginInStack() *** bad label or no stack ***: label %d \n", label);
+ if(label >= stack->GetNtrack() && (fDebug >= 0))
+ printf("AliMCAnalysisUtils::CheckOriginInStack() *** large label ***: label %d, n tracks %d \n", label, stack->GetNtrack());
+ SetTagBit(tag,kMCUnknown);
+ }//Bad label
+
+ return tag;
+
+}
-// }
- if(mStatus == 0) {
- if(pPdg ==22) return kMCConversion ;
- else if (pStatus == 0) return kMCConversion;
- else return kMCElectron ;
+//_________________________________________________________________________
+Int_t AliMCAnalysisUtils::CheckOriginInAOD(const Int_t *labels, const Int_t nlabels, TClonesArray *mcparticles)
+{
+ // Play with the MCParticles in AOD if available. Tag particles depending on their origin.
+ // Do same things as in CheckOriginInStack but different input.
+ if(!mcparticles) {
+ if(fDebug >= 0)
+ printf("AliMCAnalysisUtils::CheckOriginInAOD() - AODMCParticles is not available, check analysis settings in configuration file!!\n");
+ return -1;
+ }
+
+ Int_t tag = 0;
+ Int_t label=labels[0];//Most significant particle contributing to the cluster
+
+ Int_t nprimaries = mcparticles->GetEntriesFast();
+ if(label >= 0 && label < nprimaries){
+ //Mother
+ AliAODMCParticle * mom = (AliAODMCParticle *) mcparticles->At(label);
+ Int_t iMom = label;
+ Int_t mPdgSign = mom->GetPdgCode();
+ Int_t mPdg = TMath::Abs(mPdgSign);
+ Int_t iParent = mom->GetMother() ;
+ if(fDebug > 0 && label < 8 ) printf("AliMCAnalysisUtils::CheckOriginInAOD() - Mother is parton %d\n",iParent);
+
+ //GrandParent
+ AliAODMCParticle * parent = NULL ;
+ Int_t pPdg = -1;
+ if(iParent >= 0){
+ parent = (AliAODMCParticle *) mcparticles->At(iParent);
+ pPdg = TMath::Abs(parent->GetPdgCode());
+ }
+ else if(fDebug > 0 ) printf("AliMCAnalysisUtils::CheckOriginInAOD() - Parent with label %d\n",iParent);
+
+ if(fDebug > 2 ) {
+ printf("AliMCAnalysisUtils::CheckOriginInAOD() - Cluster most contributing mother and its parent: \n");
+ printf("\t Mother label %d, pdg %d, Primary? %d, Physical Primary? %d\n",iMom, mPdg, mom->IsPrimary(), mom->IsPhysicalPrimary());
+ if(parent)
+ printf("\t Parent label %d, pdg %d, Primary? %d, Physical Primary? %d\n",iParent, pPdg, parent->IsPrimary(), parent->IsPhysicalPrimary());
+ }
+
+ //Check if mother is converted, if not, get the first non converted mother
+ if((mPdg == 22 || mPdg == 11) && (pPdg == 22 || pPdg == 11) && !mom->IsPrimary()){
+ SetTagBit(tag,kMCConversion);
+ //Check if the mother is photon or electron with status not stable
+ while ((pPdg == 22 || pPdg == 11) && !mom->IsPhysicalPrimary()) {
+ //Mother
+ iMom = mom->GetMother();
+ mom = (AliAODMCParticle *) mcparticles->At(iMom);
+ mPdgSign = mom->GetPdgCode();
+ mPdg = TMath::Abs(mPdgSign);
+ iParent = mom->GetMother() ;
+ if(fDebug > 0 && label < 8 ) printf("AliMCAnalysisUtils::CheckOriginInAOD() - Mother is parton %d\n",iParent);
+
+ //GrandParent
+ if(iParent >= 0 && parent){
+ parent = (AliAODMCParticle *) mcparticles->At(iParent);
+ pPdg = TMath::Abs(parent->GetPdgCode());
+ }
+ // printf("\t While Mother label %d, pdg %d, Primary? %d, Physical Primary? %d\n",iMom, mPdg, mom->IsPrimary(), mom->IsPhysicalPrimary());
+ // printf("\t While Parent label %d, pdg %d, Primary? %d, Physical Primary? %d\n",iParent, pPdg, parent->IsPrimary(), parent->IsPhysicalPrimary());
+
+ }//while
+
+ if(fDebug > 2 ) {
+ printf("AliMCAnalysisUtils::CheckOriginInAOD() - Converted photon/electron : \n");
+ printf("\t Mother label %d, pdg %d, Primary? %d, Physical Primary? %d\n",iMom, mPdg, mom->IsPrimary(), mom->IsPhysicalPrimary());
+ if(parent)
+ printf("\t Parent label %d, pdg %d, Primary? %d, Physical Primary? %d\n",iParent, pPdg, parent->IsPrimary(), parent->IsPhysicalPrimary());
+ }
+
+ }//mother and parent are electron or photon and have status 0 and parent is photon or electron
+ else if((mPdg == 22 || mPdg == 11) && !mom->IsPrimary()){
+ //Still a conversion but only one electron/photon generated. Just from hadrons
+ if(pPdg == 2112 || pPdg == 211 || pPdg == 321 ||
+ pPdg == 2212 || pPdg == 130 || pPdg == 13 ) {
+ SetTagBit(tag,kMCConversion);
+ iMom = mom->GetMother();
+ mom = (AliAODMCParticle *) mcparticles->At(iMom);
+ mPdgSign = mom->GetPdgCode();
+ mPdg = TMath::Abs(mPdgSign);
+
+ if(fDebug > 2 ) {
+ printf("AliMCAnalysisUtils::CheckOriginInAOD() - Converted hadron : \n");
+ printf("\t Mother label %d, pdg %d, Primary? %d, Physical Primary? %d\n",iMom, mPdg, mom->IsPrimary(), mom->IsPhysicalPrimary());
+ }
+ }//hadron converted
+
+ //Comment for next lines, we do not check the parent of the hadron for the moment.
+ //iParent = mom->GetMother() ;
+ //if(fDebug > 0 && label < 8 ) printf("AliMCAnalysisUtils::CheckOriginInAOD() - Mother is parton %d\n",iParent);
+
+ //GrandParent
+ //if(iParent >= 0){
+ // parent = (AliAODMCParticle *) mcparticles->At(iParent);
+ // pPdg = TMath::Abs(parent->GetPdgCode());
+ //}
+ }
+
+ //printf("Final mother mPDG %d\n",mPdg);
+
+ // conversion into electrons/photons checked
+
+ //first check for typical charged particles
+ if (mPdg == 13) SetTagBit(tag,kMCMuon);
+ else if(mPdg == 211) SetTagBit(tag,kMCPion);
+ else if(mPdg == 321) SetTagBit(tag,kMCKaon);
+ else if(mPdgSign == 2212) SetTagBit(tag,kMCProton);
+ else if(mPdgSign == 2112) SetTagBit(tag,kMCNeutron);
+ else if(mPdgSign == -2212) SetTagBit(tag,kMCAntiProton);
+ else if(mPdgSign == -2112) SetTagBit(tag,kMCAntiNeutron);
+
+ //check for pi0 and eta (shouldn't happen unless their decays were turned off)
+ else if(mPdg == 111) {
+ SetTagBit(tag,kMCPi0Decay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInAOD() - First mother is directly pi0, not decayed by generator \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iMom, mcparticles, tag); //set to kMCPi0 if 2 gammas in same cluster
+ }
+ else if(mPdg == 221) {
+ SetTagBit(tag,kMCEtaDecay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInAOD() - First mother is directly eta, not decayed by generator \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iMom, mcparticles, tag); //set to kMCEta if 2 gammas in same cluster
+ }
+ //Photons
+ else if(mPdg == 22){
+ SetTagBit(tag,kMCPhoton);
+ if(mom->IsPhysicalPrimary() && (fMCGenerator=="PYTHIA" || fMCGenerator=="HERWIG")) //undecayed particle
+ {
+ if(iParent < 8 && iParent > 5 ) {//outgoing partons
+ if(pPdg == 22) SetTagBit(tag,kMCPrompt);
+ else SetTagBit(tag,kMCFragmentation);
+ }//Outgoing partons
+ else if(iParent <= 5 && (fMCGenerator=="PYTHIA" || fMCGenerator=="HERWIG")) {
+ SetTagBit(tag, kMCISR); //Initial state radiation
+ }
+ else if(parent && parent->IsPrimary() && !parent->IsPhysicalPrimary()){//Decay
+ if(pPdg == 111){
+ SetTagBit(tag,kMCPi0Decay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInAOD() - Generator pi0 decay photon \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iParent, mcparticles, tag); //set to kMCPi0 if 2 gammas in same cluster
+ }
+ else if (pPdg == 221) {
+ SetTagBit(tag, kMCEtaDecay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInAOD() - Generator eta decay photon \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iParent, mcparticles, tag); //set to kMCEta if 2 gammas in same cluster
+ }
+ else SetTagBit(tag,kMCOtherDecay);
+ }//Decay
+ else {
+ if(parent)printf("AliMCAnalysisUtils::CheckOriginInAOD() - what is it? Mother mPdg %d, is primary? %d, is physical %d \n Parent iParent %d, pPdg %d, is primary? %d, is physical? %d\n",
+ mPdg, mom->IsPrimary(), mom->IsPhysicalPrimary(),iParent, pPdg,parent->IsPrimary(), parent->IsPhysicalPrimary());
+ SetTagBit(tag,kMCOtherDecay);//Check
+ }
+ }//Physical primary
+ else if(!mom->IsPrimary()){ //Decays
+ if(pPdg == 111){
+ SetTagBit(tag,kMCPi0Decay);
+ if(fDebug > 2 )
+ printf("AliMCAnalysisUtils::CheckOriginInAOD() - Transport MC pi0 decay photon \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iParent, mcparticles, tag); //set to kMCPi0 if 2 gammas in same cluster
+ }
+ else if (pPdg == 221) {
+ SetTagBit(tag,kMCEtaDecay);
+ if(fDebug > 2 ) printf("AliMCAnalysisUtils::CheckOriginInAOD() - Transport MC eta decay photon \n");
+ CheckOverlapped2GammaDecay(labels,nlabels, iParent, mcparticles, tag); //set to kMCEta if 2 gammas in same cluster
+ }
+ else SetTagBit(tag,kMCOtherDecay);
+ }//not primary : geant generated, decays
+ else {
+ //printf("UNKNOWN 1, mom pdg %d, primary %d, physical primary %d; parent %d, pdg %d, primary %d, physical primary %d \n",
+ //mPdg, mom->IsPrimary(), mom->IsPhysicalPrimary(), iParent, pPdg, parent->IsPrimary(), parent->IsPhysicalPrimary());
+ SetTagBit(tag,kMCUnknown);
+ }
+ }//Mother Photon
+
+ //Electron check. Where did that electron come from?
+ else if(mPdg == 11){ //electron
+ if(pPdg == 11 && parent){
+ Int_t iGrandma = parent->GetMother();
+ if(iGrandma >= 0) {
+ AliAODMCParticle* gma = (AliAODMCParticle*)mcparticles->At(iGrandma);
+ Int_t gPdg = TMath::Abs(gma->GetPdgCode());
+
+ if (gPdg == 23) { SetTagBit(tag,kMCZDecay); } //parent is Z-boson
+ else if (gPdg == 24) { SetTagBit(tag,kMCWDecay); } //parent is W-boson
+ }
}
- else return kMCElectron ;
+ SetTagBit(tag,kMCElectron);
+ if(fDebug > 0) printf("AliMCAnalysisUtils::CheckOriginInAOD() - Checking ancestors of electrons");
+ if (pPdg == 111) { SetTagBit(tag,kMCPi0Decay); } //Pi0 Dalitz decay
+ else if (pPdg == 221) { SetTagBit(tag,kMCEtaDecay); } //Eta Dalitz decay
+ else if((499 < pPdg && pPdg < 600)||(4999 < pPdg && pPdg < 6000)) { SetTagBit(tag,kMCEFromB);} //b-hadron decay
+ else if((399 < pPdg && pPdg < 500)||(3999 < pPdg && pPdg < 5000)) { //c-hadron decay check
+ if(parent){
+ Int_t iGrandma = parent->GetMother();
+ if(iGrandma >= 0) {
+ AliAODMCParticle* gma = (AliAODMCParticle*)mcparticles->At(iGrandma); //charm's mother
+ Int_t gPdg = TMath::Abs(gma->GetPdgCode());
+ if((499 < gPdg && gPdg < 600)||(4999 < gPdg && gPdg < 6000)) SetTagBit(tag,kMCEFromCFromB); //b-->c-->e decay
+ else SetTagBit(tag,kMCEFromC); //c-hadron decay
+ } else SetTagBit(tag,kMCEFromC); //c-hadron decay
+ }//parent
+ } else { //prompt or other decay
+ TParticlePDG* foo = TDatabasePDG::Instance()->GetParticle(pPdg);
+ TParticlePDG* foo1 = TDatabasePDG::Instance()->GetParticle(mPdg);
+ if(fDebug > 0) printf("AliMCAnalysisUtils::CheckOriginInAOD() - Electron from other origin: %s (pPdg = %d) %s (mPdg = %d)\n",foo->GetName(), pPdg,foo1->GetName(),mPdg);
+ if(pPdg > 10000) SetTagBit(tag,kMCUnknown);
+ else SetTagBit(tag,kMCOtherDecay);
+ }
+ }//electron check
+ //cluster was made by something else
+ else {
+ if(fDebug > 0) printf("AliMCAnalysisUtils::CheckOriginInAOD() - \tSetting kMCUnknown for cluster with pdg = %d, Parent pdg = %d\n",mPdg,pPdg);
+ SetTagBit(tag,kMCUnknown);
}
- else return kMCUnknown;
}//Good label value
- else{
- if(label < 0 ) printf("AliMCAnalysisUtils::CheckOrigin: *** bad label or no stack ***: label %d \n", label);
- if(label >= stack->GetNtrack()) printf("AliMCAnalysisUtils::CheckOrigin: *** large label ***: label %d, n tracks %d \n", label, stack->GetNtrack());
- return kMCUnknown;
+ else{//Bad label
+
+ if(label < 0 && (fDebug >= 0) )
+ printf("AliMCAnalysisUtils::CheckOriginInAOD() *** bad label or no mcparticles ***: label %d \n", label);
+ if(label >= mcparticles->GetEntriesFast() && (fDebug >= 0) )
+ printf("AliMCAnalysisUtils::CheckOriginInAOD() *** large label ***: label %d, n tracks %d \n", label, mcparticles->GetEntriesFast());
+ SetTagBit(tag,kMCUnknown);
+
}//Bad label
-
- return kMCUnknown;
+
+ return tag;
}
//_________________________________________________________________________
-TList * AliMCAnalysisUtils::GetJets(Int_t iEvent, AliStack * stack, AliGenEventHeader * geh) {
- //Return list of jets (TParticles) and index of most likely parton that originated it.
-
- if(fCurrentEvent!=iEvent){
- fCurrentEvent = iEvent;
- fJetsList = new TList;
- Int_t nTriggerJets = 0;
- Float_t tmpjet[]={0,0,0,0};
+void AliMCAnalysisUtils::CheckOverlapped2GammaDecay(const Int_t *labels, const Int_t nlabels, const Int_t mesonIndex,
+ AliStack *stack, Int_t &tag)
+{
+ //Check if cluster is formed from the contribution of 2 decay photons from pi0 or eta. Input in stack
+
+ if(labels[0] < 0 || labels[0] > stack->GetNtrack() || nlabels <= 1) {
+ if(fDebug > 2) printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(stack) - Exit : label[0] %d, n primaries %d, nlabels %d \n",
+ labels[0],stack->GetNtrack(), nlabels);
+ return;
+ }
+
+ TParticle * meson = stack->Particle(mesonIndex);
+ Int_t mesonPdg = meson->GetPdgCode();
+ if(mesonPdg!=111 && mesonPdg!=221){
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(stack) - Wrong pi0/eta PDG : %d \n",mesonPdg);
+ return;
+ }
+
+ if(fDebug > 2) printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(stack) - %s, label %d\n",meson->GetName(), mesonIndex);
+
+ //Check if meson decayed into 2 daughters or if both were kept.
+ if(meson->GetNDaughters() != 2){
+ if(fDebug > 2)
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(stack) - Not overalapped. Number of daughters is %d, not 2 \n",meson->GetNDaughters());
+ return;
+ }
+
+ //Get the daughters
+ Int_t iPhoton0 = meson->GetDaughter(0);
+ Int_t iPhoton1 = meson->GetDaughter(1);
+ TParticle *photon0 = stack->Particle(iPhoton0);
+ TParticle *photon1 = stack->Particle(iPhoton1);
+
+ //Check if both daughters are photons
+ if(photon0->GetPdgCode() != 22 || photon1->GetPdgCode()!=22){
+ if(fDebug > 2)
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(stack) - Not overalapped. PDG: daughter 1 = %d, of daughter 2 = %d \n",photon0->GetPdgCode(),photon1->GetPdgCode());
+ return;
+ }
+
+ if(fDebug > 2)
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(stack) - Daughter labels : photon0 = %d, photon1 = %d \n",iPhoton0,iPhoton1);
+
+ //Check if both photons contribute to the cluster
+ Bool_t okPhoton0 = kFALSE;
+ Bool_t okPhoton1 = kFALSE;
+
+ if(fDebug > 3) printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(stack) - Labels loop:\n");
+
+ for(Int_t i = 0; i < nlabels; i++){
+ if(fDebug > 3) printf("\t at begin:label %d/%d: %d, ok? photon1 %d, photon2 %d\n", i+1, nlabels, labels[i], okPhoton0, okPhoton1);
+
+ //If we already found both, break the loop
+ if(okPhoton0 && okPhoton1) break;
+
+ Int_t index = labels[i];
+ if (iPhoton0 == index) {
+ okPhoton0 = kTRUE;
+ continue;
+ }
+ else if (iPhoton1 == index) {
+ okPhoton1 = kTRUE;
+ continue;
+ }
+
+ //Trace back the mother in case it was a conversion
+
+ if(index >= stack->GetNtrack()){
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(ESD) Particle index %d larger than size of list %d !!\n",index,stack->GetNtrack());
+ continue;
+ }
+
+ TParticle * daught = stack->Particle(index);
+ Int_t tmpindex = daught->GetFirstMother();
+ if(fDebug > 3) printf("\t Conversion? : mother %d\n",tmpindex);
+ while(tmpindex>=0){
+ //MC particle of interest is the mother
+ if(fDebug > 3) printf("\t \t parent index %d\n",tmpindex);
+ daught = stack->Particle(tmpindex);
+ if (iPhoton0 == tmpindex) {
+ okPhoton0 = kTRUE;
+ break;
+ }
+ else if (iPhoton1 == tmpindex) {
+ okPhoton1 = kTRUE;
+ break;
+ }
+ tmpindex = daught->GetFirstMother();
+ }//While to check if pi0/eta daughter was one of these contributors to the cluster
+
+ if(i == 0 && (!okPhoton0 && !okPhoton1) && fDebug>=0)
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(stack) - Something happens, first label should be from a photon decay!\n");
+
+ }//loop on list of labels
+
+ //If both photons contribute tag as the corresponding meson.
+ if(okPhoton0 && okPhoton1){
+ if(fDebug > 2)
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(stack) - %s OVERLAPPED DECAY \n", meson->GetName());
+
+ if(mesonPdg == 111) SetTagBit(tag,kMCPi0);
+ else SetTagBit(tag,kMCEta);
+ }
+
+}
+
+//_________________________________________________________________________
+void AliMCAnalysisUtils::CheckOverlapped2GammaDecay(const Int_t *labels, const Int_t nlabels, const Int_t mesonIndex,
+ TClonesArray *mcparticles, Int_t &tag)
+{
+ //Check if cluster is formed from the contribution of 2 decay photons from pi0 or eta. Input in AODMCParticles
+
+ if(labels[0] < 0 || labels[0] > mcparticles->GetEntriesFast() || nlabels <= 1) {
+ if(fDebug > 2)
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(AOD) - Exit : label[0] %d, n primaries %d, nlabels %d \n",
+ labels[0],mcparticles->GetEntriesFast(), nlabels);
+ return;
+ }
+
+ AliAODMCParticle * meson = (AliAODMCParticle *) mcparticles->At(mesonIndex);
+ Int_t mesonPdg = meson->GetPdgCode();
+ if(mesonPdg != 111 && mesonPdg != 221) {
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(AOD) - Wrong pi0/eta PDG : %d \n",mesonPdg);
+ return;
+ }
+
+ if(fDebug > 2) printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(AOD) - pdg %d, label %d, ndaughters %d\n", mesonPdg, mesonIndex, meson->GetNDaughters());
+
+
+ //Get the daughters
+ if(meson->GetNDaughters() != 2){
+ if(fDebug > 2)
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(stack) - Not overalapped. Number of daughters is %d, not 2 \n",meson->GetNDaughters());
+ return;
+ }
+ Int_t iPhoton0 = meson->GetDaughter(0);
+ Int_t iPhoton1 = meson->GetDaughter(1);
+ //if((iPhoton0 == -1) || (iPhoton1 == -1)){
+ // if(fDebug > 2)
+ // printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(AOD) - Exit : Not overlapped. At least a daughter do not exists : d1 %d, d2 %d \n", iPhoton0, iPhoton1);
+ // return;
+ //}
+ AliAODMCParticle *photon0 = (AliAODMCParticle *) mcparticles->At(iPhoton0);
+ AliAODMCParticle *photon1 = (AliAODMCParticle *) mcparticles->At(iPhoton1);
+
+ //Check if both daughters are photons
+ if(photon0->GetPdgCode() != 22 && photon1->GetPdgCode()!=22){
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(AOD) - Not overlapped. PDG: daughter 1 = %d, of daughter 2 = %d \n",photon0->GetPdgCode(),photon1->GetPdgCode());
+ return;
+ }
+
+ if(fDebug > 2)
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(AOD) - Daughter labels : photon0 = %d, photon1 = %d \n",iPhoton0,iPhoton1);
+
+ //Check if both photons contribute to the cluster
+ Bool_t okPhoton0 = kFALSE;
+ Bool_t okPhoton1 = kFALSE;
+
+ if(fDebug > 3)
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(AOD) - Labels loop:\n");
+
+ for(Int_t i = 0; i < nlabels; i++){
+ if(fDebug > 3)
+ printf("\t label %d/%d: %d, ok? %d, %d\n", i, nlabels, labels[i], okPhoton0, okPhoton1);
+
+ //If we already found both, break the loop
+ if(okPhoton0 && okPhoton1) break;
+
+ Int_t index = labels[i];
+ if (iPhoton0 == index) {
+ okPhoton0 = kTRUE;
+ continue;
+ }
+ else if (iPhoton1 == index) {
+ okPhoton1 = kTRUE;
+ continue;
+ }
+
+ //Trace back the mother in case it was a conversion
+
+ if(index >= mcparticles->GetEntriesFast()){
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(AOD) Particle index %d larger than size of list %d !!\n",index,mcparticles->GetEntriesFast());
+ continue;
+ }
+
+ AliAODMCParticle * daught = (AliAODMCParticle*) mcparticles->At(index);
+ Int_t tmpindex = daught->GetMother();
+ if(fDebug > 3)
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(AOD) - Conversion? : mother %d\n",tmpindex);
+
+ while(tmpindex>=0){
+
+ //MC particle of interest is the mother
+ if(fDebug > 3)
+ printf("\t parent index %d\n",tmpindex);
+ daught = (AliAODMCParticle*) mcparticles->At(tmpindex);
+ //printf("tmpindex %d\n",tmpindex);
+ if (iPhoton0 == tmpindex) {
+ okPhoton0 = kTRUE;
+ break;
+ }
+ else if (iPhoton1 == tmpindex) {
+ okPhoton1 = kTRUE;
+ break;
+ }
+ tmpindex = daught->GetMother();
+ }//While to check if pi0/eta daughter was one of these contributors to the cluster
+
+ if(i == 0 && (!okPhoton0 && !okPhoton1) && fDebug>=-1 )
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(AOD) - Something happens, first label should be from a photon decay!\n");
+
+ }//loop on list of labels
+
+ //If both photons contribute tag as the corresponding meson.
+ if(okPhoton0 && okPhoton1){
+ if(fDebug > 2)
+ printf("AliMCAnalysisUtils::CheckOverlapped2GammaDecay(AOD) - %s OVERLAPPED DECAY \n",(TDatabasePDG::Instance()->GetParticle(mesonPdg))->GetName());
+
+ if(mesonPdg == 111) SetTagBit(tag,kMCPi0);
+ else SetTagBit(tag,kMCEta);
+ }
+
+}
+
+//_________________________________________________________________________
+TList * AliMCAnalysisUtils::GetJets(AliCaloTrackReader * const reader)
+{
+ //Return list of jets (TParticles) and index of most likely parton that originated it.
+ AliStack * stack = reader->GetStack();
+ Int_t iEvent = reader->GetEventNumber();
+ AliGenEventHeader * geh = reader->GetGenEventHeader();
+ if(fCurrentEvent!=iEvent){
+ fCurrentEvent = iEvent;
+ fJetsList = new TList;
+ Int_t nTriggerJets = 0;
+ Float_t tmpjet[]={0,0,0,0};
- //printf("Event %d %d\n",fCurrentEvent,iEvent);
- //Get outgoing partons
- if(stack->GetNtrack() < 8) return fJetsList;
- TParticle * parton1 = stack->Particle(6);
- TParticle * parton2 = stack->Particle(7);
- if(fDebug > 2){
- printf("parton 6 : %s, pt %2.2f,E %2.2f, phi %2.2f, eta %2.2f \n",
- parton1->GetName(),parton1->Pt(),parton1->Energy(),parton1->Phi()*TMath::RadToDeg(),parton1->Eta());
- printf("parton 7 : %s, pt %2.2f,E %2.2f, phi %2.2f, eta %2.2f \n",
- parton2->GetName(),parton2->Pt(),parton2->Energy(),parton2->Phi()*TMath::RadToDeg(),parton2->Eta());
+ //printf("Event %d %d\n",fCurrentEvent,iEvent);
+ //Get outgoing partons
+ if(stack->GetNtrack() < 8) return fJetsList;
+ TParticle * parton1 = stack->Particle(6);
+ TParticle * parton2 = stack->Particle(7);
+ if(fDebug > 2){
+ printf("AliMCAnalysisUtils::GetJets() - parton 6 : %s, pt %2.2f,E %2.2f, phi %2.2f, eta %2.2f \n",
+ parton1->GetName(),parton1->Pt(),parton1->Energy(),parton1->Phi()*TMath::RadToDeg(),parton1->Eta());
+ printf("AliMCAnalysisUtils::GetJets() - parton 7 : %s, pt %2.2f,E %2.2f, phi %2.2f, eta %2.2f \n",
+ parton2->GetName(),parton2->Pt(),parton2->Energy(),parton2->Phi()*TMath::RadToDeg(),parton2->Eta());
}
-// //Trace the jet from the mother parton
-// Float_t pt = 0;
-// Float_t pt1 = 0;
-// Float_t pt2 = 0;
-// Float_t e = 0;
-// Float_t e1 = 0;
-// Float_t e2 = 0;
-// TParticle * tmptmp = new TParticle;
-// for(Int_t i = 0; i< stack->GetNprimary(); i++){
-// tmptmp = stack->Particle(i);
+ // //Trace the jet from the mother parton
+ // Float_t pt = 0;
+ // Float_t pt1 = 0;
+ // Float_t pt2 = 0;
+ // Float_t e = 0;
+ // Float_t e1 = 0;
+ // Float_t e2 = 0;
+ // TParticle * tmptmp = new TParticle;
+ // for(Int_t i = 0; i< stack->GetNprimary(); i++){
+ // tmptmp = stack->Particle(i);
-// if(tmptmp->GetStatusCode() == 1){
-// pt = tmptmp->Pt();
-// e = tmptmp->Energy();
-// Int_t imom = tmptmp->GetFirstMother();
-// Int_t imom1 = 0;
-// //printf("1st imom %d\n",imom);
-// while(imom > 5){
-// imom1=imom;
-// tmptmp = stack->Particle(imom);
-// imom = tmptmp->GetFirstMother();
-// //printf("imom %d \n",imom);
-// }
-// //printf("Last imom %d %d\n",imom1, imom);
-// if(imom1 == 6) {
-// pt1+=pt;
-// e1+=e;
-// }
-// else if (imom1 == 7){
-// pt2+=pt;
-// e2+=e; }
-// }// status 1
-
-// }// for
+ // if(tmptmp->GetStatusCode() == 1){
+ // pt = tmptmp->Pt();
+ // e = tmptmp->Energy();
+ // Int_t imom = tmptmp->GetFirstMother();
+ // Int_t imom1 = 0;
+ // //printf("1st imom %d\n",imom);
+ // while(imom > 5){
+ // imom1=imom;
+ // tmptmp = stack->Particle(imom);
+ // imom = tmptmp->GetFirstMother();
+ // //printf("imom %d \n",imom);
+ // }
+ // //printf("Last imom %d %d\n",imom1, imom);
+ // if(imom1 == 6) {
+ // pt1+=pt;
+ // e1+=e;
+ // }
+ // else if (imom1 == 7){
+ // pt2+=pt;
+ // e2+=e; }
+ // }// status 1
+
+ // }// for
-// printf("JET 1, pt %2.2f, e %2.2f; JET 2, pt %2.2f, e %2.2f \n",pt1,e1,pt2,e2);
+ // printf("JET 1, pt %2.2f, e %2.2f; JET 2, pt %2.2f, e %2.2f \n",pt1,e1,pt2,e2);
//Get the jet, different way for different generator
//PYTHIA
- if(fMCGenerator == "PYTHIA"){
- TParticle * jet = new TParticle;
- AliGenPythiaEventHeader* pygeh= (AliGenPythiaEventHeader*) geh;
- nTriggerJets = pygeh->NTriggerJets();
- //if(fDebug > 1)
- printf("PythiaEventHeader: Njets: %d\n",nTriggerJets);
- Int_t iparton = -1;
- for(Int_t i = 0; i< nTriggerJets; i++){
- iparton=-1;
- pygeh->TriggerJet(i, tmpjet);
- jet = new TParticle(94, 21, -1, -1, -1, -1, tmpjet[0],tmpjet[1],tmpjet[2],tmpjet[3], 0,0,0,0);
- //Assign an outgoing parton as mother
- Float_t phidiff1 = TMath::Abs(jet->Phi()-parton1->Phi());
- Float_t phidiff2 = TMath::Abs(jet->Phi()-parton2->Phi());
- if(phidiff1 > phidiff2) jet->SetFirstMother(7);
- else jet->SetFirstMother(6);
- //jet->Print();
- if(fDebug > 1)
- printf("PYTHIA Jet %d: mother %d, pt %2.2f,E %2.2f, phi %2.2f, eta %2.2f \n",
- i, jet->GetFirstMother(),jet->Pt(),jet->Energy(),jet->Phi()*TMath::RadToDeg(),jet->Eta());
- fJetsList->Add(jet);
- }
- }//Pythia triggered jets
- //HERWIG
- else if (fMCGenerator=="HERWIG"){
- Int_t pdg = -1;
- //Check parton 1
- TParticle * tmp = parton1;
- if(parton1->GetPdgCode()!=22){
- while(pdg != 94){
- if(tmp->GetFirstDaughter()==-1) return fJetsList;
- tmp = stack->Particle(tmp->GetFirstDaughter());
- pdg = tmp->GetPdgCode();
- }//while
-
- //Add found jet to list
- TParticle *jet1 = new TParticle(*tmp);
- jet1->SetFirstMother(6);
- fJetsList->Add(jet1);
- //printf("jet 1: first daughter %d, last daughter %d\n", tmp->GetFirstDaughter(), tmp->GetLastDaughter());
- //tmp = stack->Particle(tmp->GetFirstDaughter());
- //tmp->Print();
- //jet1->Print();
- if(fDebug > 1)
- printf("HERWIG Jet 1: mother %d, status %d, pt %2.2f,E %2.2f, phi %2.2f, eta %2.2f \n",
- jet1->GetFirstMother(),jet1->GetStatusCode(),jet1->Pt(),jet1->Energy(),jet1->Phi()*TMath::RadToDeg(),jet1->Eta());
- }//not photon
-
- //Check parton 2
- pdg = -1;
- tmp = parton2;
- Int_t i = -1;
- if(parton2->GetPdgCode()!=22){
- while(pdg != 94){
- if(tmp->GetFirstDaughter()==-1) return fJetsList;
- i = tmp->GetFirstDaughter();
- tmp = stack->Particle(tmp->GetFirstDaughter());
- pdg = tmp->GetPdgCode();
- }//while
- //Add found jet to list
- TParticle *jet2 = new TParticle(*tmp);
- jet2->SetFirstMother(7);
- fJetsList->Add(jet2);
- //jet2->Print();
- if(fDebug > 1)
- printf("HERWIG Jet 2: mother %d, status %d, pt %2.2f,E %2.2f, phi %2.2f, eta %2.2f \n",
- jet2->GetFirstMother(),jet2->GetStatusCode(),jet2->Pt(),jet2->Energy(),jet2->Phi()*TMath::RadToDeg(),jet2->Eta());
- Int_t first = tmp->GetFirstDaughter();
- Int_t last = tmp->GetLastDaughter();
- printf("jet 2: first daughter %d, last daughter %d, pdg %d\n",first, last, tmp->GetPdgCode());
+ if(fMCGenerator == "PYTHIA"){
+ TParticle * jet = 0x0;
+ AliGenPythiaEventHeader* pygeh= (AliGenPythiaEventHeader*) geh;
+ nTriggerJets = pygeh->NTriggerJets();
+ if(fDebug > 1)
+ printf("AliMCAnalysisUtils::GetJets() - PythiaEventHeader: Njets: %d\n",nTriggerJets);
+
+ Int_t iparton = -1;
+ for(Int_t i = 0; i< nTriggerJets; i++){
+ iparton=-1;
+ pygeh->TriggerJet(i, tmpjet);
+ jet = new TParticle(94, 21, -1, -1, -1, -1, tmpjet[0],tmpjet[1],tmpjet[2],tmpjet[3], 0,0,0,0);
+ //Assign an outgoing parton as mother
+ Float_t phidiff1 = TMath::Abs(jet->Phi()-parton1->Phi());
+ Float_t phidiff2 = TMath::Abs(jet->Phi()-parton2->Phi());
+ if(phidiff1 > phidiff2) jet->SetFirstMother(7);
+ else jet->SetFirstMother(6);
+ //jet->Print();
+ if(fDebug > 1)
+ printf("AliMCAnalysisUtils::GetJets() - PYTHIA Jet %d: mother %d, pt %2.2f,E %2.2f, phi %2.2f, eta %2.2f \n",
+ i, jet->GetFirstMother(),jet->Pt(),jet->Energy(),jet->Phi()*TMath::RadToDeg(),jet->Eta());
+ fJetsList->Add(jet);
+ }
+ }//Pythia triggered jets
+ //HERWIG
+ else if (fMCGenerator=="HERWIG"){
+ Int_t pdg = -1;
+ //Check parton 1
+ TParticle * tmp = parton1;
+ if(parton1->GetPdgCode()!=22){
+ while(pdg != 94){
+ if(tmp->GetFirstDaughter()==-1) return fJetsList;
+ tmp = stack->Particle(tmp->GetFirstDaughter());
+ pdg = tmp->GetPdgCode();
+ }//while
+
+ //Add found jet to list
+ TParticle *jet1 = new TParticle(*tmp);
+ jet1->SetFirstMother(6);
+ fJetsList->Add(jet1);
+ //printf("jet 1: first daughter %d, last daughter %d\n", tmp->GetFirstDaughter(), tmp->GetLastDaughter());
+ //tmp = stack->Particle(tmp->GetFirstDaughter());
+ //tmp->Print();
+ //jet1->Print();
+ if(fDebug > 1)
+ printf("AliMCAnalysisUtils::GetJets() - HERWIG Jet 1: mother %d, status %d, pt %2.2f,E %2.2f, phi %2.2f, eta %2.2f \n",
+ jet1->GetFirstMother(),jet1->GetStatusCode(),jet1->Pt(),jet1->Energy(),jet1->Phi()*TMath::RadToDeg(),jet1->Eta());
+ }//not photon
+
+ //Check parton 2
+ pdg = -1;
+ tmp = parton2;
+ Int_t i = -1;
+ if(parton2->GetPdgCode()!=22){
+ while(pdg != 94){
+ if(tmp->GetFirstDaughter()==-1) return fJetsList;
+ i = tmp->GetFirstDaughter();
+ tmp = stack->Particle(tmp->GetFirstDaughter());
+ pdg = tmp->GetPdgCode();
+ }//while
+ //Add found jet to list
+ TParticle *jet2 = new TParticle(*tmp);
+ jet2->SetFirstMother(7);
+ fJetsList->Add(jet2);
+ //jet2->Print();
+ if(fDebug > 1)
+ printf("AliMCAnalysisUtils::GetJets() - HERWIG Jet 2: mother %d, status %d, pt %2.2f,E %2.2f, phi %2.2f, eta %2.2f \n",
+ jet2->GetFirstMother(),jet2->GetStatusCode(),jet2->Pt(),jet2->Energy(),jet2->Phi()*TMath::RadToDeg(),jet2->Eta());
+ //Int_t first = tmp->GetFirstDaughter();
+ //Int_t last = tmp->GetLastDaughter();
+ //printf("jet 2: first daughter %d, last daughter %d, pdg %d\n",first, last, tmp->GetPdgCode());
// for(Int_t d = first ; d < last+1; d++){
-// tmp = stack->Particle(d);
-// if(i == tmp->GetFirstMother())
-// printf("Daughter n %d, Mother %d, name %s, status %d, pT %2.2f,E %2.2f, phi %2.2f, eta %2.2f \n",
-// d,tmp->GetFirstMother(), tmp->GetName(), tmp->GetStatusCode(),tmp->Pt(),tmp->Energy(),tmp->Phi()*TMath::RadToDeg(),tmp->Eta());
-// }
- //tmp->Print();
- }//not photon
- }//Herwig generated jets
- }
-
- return fJetsList;
+ // tmp = stack->Particle(d);
+ // if(i == tmp->GetFirstMother())
+ // printf("Daughter n %d, Mother %d, name %s, status %d, pT %2.2f,E %2.2f, phi %2.2f, eta %2.2f \n",
+ // d,tmp->GetFirstMother(), tmp->GetName(), tmp->GetStatusCode(),tmp->Pt(),tmp->Energy(),tmp->Phi()*TMath::RadToDeg(),tmp->Eta());
+ // }
+ //tmp->Print();
+ }//not photon
+ }//Herwig generated jets
+ }
+
+ return fJetsList;
}
+
//________________________________________________________________
void AliMCAnalysisUtils::Print(const Option_t * opt) const
{
-
- //Print some relevant parameters set for the analysis
- if(! opt)
- return;
-
- printf("***** Print: %s %s ******\n", GetName(), GetTitle() ) ;
-
- printf("Debug level = %d\n",fDebug);
- printf("MC Generator = %s\n",fMCGenerator.Data());
-
- printf(" \n");
-
+ //Print some relevant parameters set for the analysis
+
+ if(! opt)
+ return;
+
+ printf("***** Print: %s %s ******\n", GetName(), GetTitle() ) ;
+
+ printf("Debug level = %d\n",fDebug);
+ printf("MC Generator = %s\n",fMCGenerator.Data());
+ printf(" \n");
+
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff