Possibility of rapidity cut on trigger particle

[u/mrichter/AliRoot.git] / PYTHIA6 / AliGenPythia.cxx

diff --git a/PYTHIA6/AliGenPythia.cxx b/PYTHIA6/AliGenPythia.cxx
index eccf0f72495e1cb1fdee6a086f26076b3a171da8..b8371da4934f852e2fc4f688187ab2f6cab669eb 100644 (file)
--- a/PYTHIA6/AliGenPythia.cxx
+++ b/PYTHIA6/AliGenPythia.cxx
@@ -126,10 +126,14 @@ AliGenPythia::AliGenPythia():
     fNucPdf(0),
     fTriggerParticle(0),
     fTriggerEta(0.9),     
+    fTriggerY(999.),     
+    fTriggerEtaMin(0.9),     
     fTriggerMinPt(-1),  
     fTriggerMaxPt(1000),  
     fTriggerMultiplicity(0),
     fTriggerMultiplicityEta(0),
+    fTriggerMultiplicityEtaMin(0),
+    fTriggerMultiplicityEtaMax(0),
     fTriggerMultiplicityPtMin(0),
     fCountMode(kCountAll),      
     fHeader(0),  
@@ -244,10 +248,14 @@ AliGenPythia::AliGenPythia(Int_t npart)
      fNucPdf(0),
      fTriggerParticle(0),
      fTriggerEta(0.9), 
+     fTriggerY(999.), 
+     fTriggerEtaMin(0.9),     
      fTriggerMinPt(-1),  
      fTriggerMaxPt(1000),      
      fTriggerMultiplicity(0),
      fTriggerMultiplicityEta(0),
+     fTriggerMultiplicityEtaMin(0),
+     fTriggerMultiplicityEtaMax(0),
      fTriggerMultiplicityPtMin(0),
      fCountMode(kCountAll),      
      fHeader(0),  
@@ -769,14 +777,14 @@ void AliGenPythia::Generate()
            fProcess != kPyMbMSEL1     &&
            fProcess != kPyW && 
            fProcess != kPyZ &&
-      fProcess != kPyZgamma &&
+            fProcess != kPyZgamma &&
            fProcess != kPyCharmppMNRwmi && 
            fProcess != kPyBeautyppMNRwmi &&
            fProcess != kPyBeautyJets &&
-     fProcess != kPyWPWHG &&
-     fProcess != kPyJetsPWHG &&
-     fProcess != kPyCharmPWHG &&
-     fProcess != kPyBeautyPWHG) {
+            fProcess != kPyWPWHG &&
+            fProcess != kPyJetsPWHG &&
+            fProcess != kPyCharmPWHG &&
+            fProcess != kPyBeautyPWHG) {
            
            for (i = 0; i < np; i++) {
                TParticle* iparticle = (TParticle *) fParticles.At(i);
@@ -1053,6 +1061,10 @@ Int_t  AliGenPythia::GenerateMB()
        // eta cut
        if (fTriggerMultiplicityEta > 0 && TMath::Abs(iparticle->Eta()) > fTriggerMultiplicityEta)
          continue;
+       //multiplicity check for a given eta range
+       if ((fTriggerMultiplicityEtaMin != fTriggerMultiplicityEtaMax) && 
+           (iparticle->Eta() < fTriggerMultiplicityEtaMin || iparticle->Eta() > fTriggerMultiplicityEtaMax))
+         continue;
        // pt cut
        if (iparticle->Pt() < fTriggerMultiplicityPtMin) 
            continue;
@@ -1079,7 +1091,12 @@ Int_t  AliGenPythia::GenerateMB()
            kf = CheckPDGCode(iparticle->GetPdgCode());
            if (kf != fTriggerParticle) continue;
            if (iparticle->Pt() == 0.) continue;
-           if (TMath::Abs(iparticle->Eta()) > fTriggerEta) continue;
+           if (TMath::Abs(iparticle->Y()) > fTriggerY) continue;
+           if (fTriggerEtaMin == fTriggerEta) {
+             if (TMath::Abs(iparticle->Eta()) > fTriggerEta) continue;
+           } else {
+             if (iparticle->Eta() > fTriggerEta || iparticle->Eta() < fTriggerEtaMin) continue;
+           }
            if ( iparticle->Pt() > fTriggerMaxPt || iparticle->Pt() < fTriggerMinPt ) continue;
            triggered = kTRUE;
            break;
@@ -1101,8 +1118,8 @@ Int_t  AliGenPythia::GenerateMB()
       Bool_t  theChild=kFALSE;
       Bool_t  triggered=kFALSE;
       Float_t y;  
-      Int_t   pdg,mpdg,mpdgUpperFamily;
-      for(i=0; i<np; i++) {
+      Int_t   pdg, mpdg, mpdgUpperFamily;
+      for(i = 0; i < np; i++) {
        partCheck = (TParticle*)fParticles.At(i);
        pdg = partCheck->GetPdgCode();  
        if(TMath::Abs(pdg) == fFlavorSelect) { // quark  
@@ -1145,10 +1162,10 @@ Int_t  AliGenPythia::GenerateMB()
 
     //Introducing child cuts in case kPyW, kPyZ, kPyMb, and kPyMbNonDiff
     if ( (
-    fProcess == kPyWPWHG ||
-    fProcess == kPyW ||
+         fProcess == kPyWPWHG ||
+         fProcess == kPyW ||
          fProcess == kPyZ ||
-    fProcess == kPyZgamma ||
+         fProcess == kPyZgamma ||
          fProcess == kPyMbDefault ||
          fProcess == kPyMb ||
          fProcess == kPyMbAtlasTuneMC09 ||
@@ -1160,7 +1177,7 @@ Int_t  AliGenPythia::GenerateMB()
        return 0;
       }
     }
-  
+    
 
     for (i = 0; i < np; i++) {
        Int_t trackIt = 0;