Method SetTriggerParticle added.

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

diff --git a/PYTHIA6/AliGenPythia.h b/PYTHIA6/AliGenPythia.h
index 7e307a7227f7a5989ccee877fe177de318aa21d1..a8d3f24cfd5807dab694acbb8395ac8b044932f2 100644 (file)
--- a/PYTHIA6/AliGenPythia.h
+++ b/PYTHIA6/AliGenPythia.h
@@ -76,6 +76,10 @@ class AliGenPythia : public AliGenMC
        {fEtaMinGamma = etamin; fEtaMaxGamma = etamax;}
     virtual void    SetGammaPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
        {fPhiMinGamma = TMath::Pi()*phimin/180.; fPhiMaxGamma = TMath::Pi()*phimax/180.;}
+
+    // Trigger on a particle
+    virtual void    SetTriggerParticle(Int_t particle = 0, Float_t etamax = 0.9) 
+       {fTriggerParticle = particle; fTriggerEta = etamax;}
     // Set option for feed down from higher family
     virtual void SetFeedDownHigherFamily(Bool_t opt) {
       fFeedDownOpt = opt;
@@ -201,12 +205,13 @@ class AliGenPythia : public AliGenMC
                                     // parents and their decays
     Bool_t fFeedDownOpt;            // Option to set feed down from higher
                                     // quark families (e.g. b->c)
-    Bool_t fFragmentation;          // Option to activate fragmentation by Pythia
-    Bool_t fSetNuclei;              // Flag indicating that SetNuclei has been called
-    Bool_t fNewMIS;                 // Flag for the new multipple interactions scenario
-    Bool_t fHFoff;                  // Flag for switching heafy flavor production off 
+    Bool_t  fFragmentation;          // Option to activate fragmentation by Pythia
+    Bool_t  fSetNuclei;              // Flag indicating that SetNuclei has been called
+    Bool_t  fNewMIS;                 // Flag for the new multipple interactions scenario
+    Bool_t  fHFoff;                  // Flag for switching heafy flavor production off
+    Int_t   fTriggerParticle;        // Trigger on this particle ...
+    Float_t fTriggerEta;             // .. within |eta| < fTriggerEta
     //
-
     CountMode_t fCountMode;            // Options for counting when the event will be finished.
     AliGenPythiaEventHeader* fHeader;  //! Event header
     AliRunLoader*            fRL;      //! Run Loader