From c6b905e5ec3a2518f38f7501feafd0bf39f318e0 Mon Sep 17 00:00:00 2001
From: Gustavo Conesa <Gustavo.Conesa.Balbastre@cern.ch>
Date: Thu, 25 Jul 2024 10:18:21 +0200
Subject: [PATCH 1/2] Remove protection agains Root6 for Running Starlight

---
 MC/GeneratorConfig.C | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/MC/GeneratorConfig.C b/MC/GeneratorConfig.C
index 640ac8df..600ef6cd 100644
--- a/MC/GeneratorConfig.C
+++ b/MC/GeneratorConfig.C
@@ -1256,10 +1256,10 @@ GeneratorHijing()
 
 AliGenerator *
 GeneratorStarlight(){
-#if ROOT_VERSION_CODE >= ROOT_VERSION(6,0,0)
-  printf("ERROR: Starlight not yet compatible with ROOT 6!\n");
-  return NULL;
-#else
+//#if ROOT_VERSION_CODE >= ROOT_VERSION(6,0,0)
+//  printf("ERROR: Starlight not yet compatible with ROOT 6!\n");
+//  return NULL;
+//#else
   gSystem->Load("libStarLight.so");
   gSystem->Load("libAliStarLight.so");
 
@@ -1504,7 +1504,7 @@ GeneratorStarlight(){
   genCocktail->AddGenerator(genStarLight,"StarLight",1.);
   genCocktail->AddGenerator(genEvtGen,"EvtGen",1.);
   return genCocktail;
-#endif
+//#endif
 }
 
 

From 3b3819d604ffdc4005759ba9324b94597b1b3fb7 Mon Sep 17 00:00:00 2001
From: Gustavo Conesa <Gustavo.Conesa.Balbastre@cern.ch>
Date: Thu, 25 Jul 2024 11:18:35 +0200
Subject: [PATCH 2/2] combine Hijing and Pythia jets for p-Pb, adapted from
 MC/CustomGenerators/PWGHF/EPS_HFbjetpPb.C, needed for ALIROOT-8867

---
 MC/CustomGenerators/PWGHF/HIJING_HFbjetpPb.C | 34 +++++++++++++-------
 1 file changed, 23 insertions(+), 11 deletions(-)

diff --git a/MC/CustomGenerators/PWGHF/HIJING_HFbjetpPb.C b/MC/CustomGenerators/PWGHF/HIJING_HFbjetpPb.C
index 2c0eb935..684e0604 100644
--- a/MC/CustomGenerators/PWGHF/HIJING_HFbjetpPb.C
+++ b/MC/CustomGenerators/PWGHF/HIJING_HFbjetpPb.C
@@ -1,19 +1,24 @@
 AliGenerator *
 GeneratorCustom(TString opt = "")
 {
+
+  // set the xmldoc path using PYTHIA8DATA enviroement var
+  gSystem->Setenv("PYTHIA8DATA", gSystem->ExpandPathName("$ALICE_ROOT/PYTHIA8/pythia8/xmldoc"));  
+  
   AliGenCocktail *ctl  = (AliGenCocktail*) GeneratorCocktail("HIJING_HF");
   Float_t randHF = gRandom->Rndm();
-  if(randHF>0.176797){ // add HIJING generator for p-Pb
-    AliGenerator *hij = GeneratorHijing();
-    ctl->AddGenerator(hij, "Hijing", 1.);
+  if(randHF>0.176797)
+  { // add HIJING generator for p-Pb
+    AliGenerator *hijing = GeneratorHijing();
+    ctl->AddGenerator(hijing, "HIJING", 1.);
   }
   //
   Int_t process[2] = {kPythia6HeavyProcess_Charm, kPythia6HeavyProcess_Beauty};
-  Int_t decay[4]   = {kPythia6HeavyDecay_Hadrons, kPythia6HeavyDecay_HadronsWithV0, kPythia6HeavyDecay_Electron, kPythia6HeavyDecay_All};
+  Int_t decay[5]   = {kPythia6HeavyDecay_Hadrons, kPythia6HeavyDecay_HadronsWithV0, kPythia6HeavyDecay_Electron, kPythia6HeavyDecay_All, kPythia6HeavyDecay_All_bDecaysEvtGen};
   
-  const Char_t *label[2][4] = {
-    "chadr PYTHIA", "chadr PYTHIA", "cele PYTHIA", "ccbar PYTHIA",
-    "bchadr PYTHIA", "bchadr PYTHIA", "bele PYTHIA", "bbbar PYTHIA"
+  const Char_t *label[2][5] = {
+    "chadr PYTHIA", "chadr PYTHIA", "cele PYTHIA", "ccbar PYTHIA", "ccbar PYTHIA+EvtGen",
+    "bchadr PYTHIA", "bchadr PYTHIA", "bele PYTHIA", "bbbar PYTHIA", "bbbar PYTHIA+EvtGen"
   };
   
   Int_t iprocess = -1;
@@ -22,15 +27,15 @@ GeneratorCustom(TString opt = "")
   else if(opt.Contains("bb")) {iprocess = 1; printf("-- HF process = %s -- \n",opt.Data());}
   else {printf("-- no HF process set = %s -- \n",opt.Data());}
   
-  TString optList[5] = {"had", "hv0", "ele", "all", "jetjet"};
+  TString optList[6] = {"had", "hv0", "ele", "all", "bEvtGen", "jetjet"};
   Int_t idecay = 0;
-  for (Int_t iopt = 0; iopt < 5; iopt++){
+  for (Int_t iopt = 0; iopt < 6; iopt++){
     if (opt.Contains(optList[iopt]))
       idecay = iopt;
   }
   
   AliGenerator *phf;
-  if(idecay < 4) {
+  if(idecay < 5) {
     Float_t randHF = gRandom->Rndm();
     Int_t typeHF = -1;
     if(randHF < 0.9) {
@@ -44,11 +49,18 @@ GeneratorCustom(TString opt = "")
       printf(">>>>> added generator for HF production:  %s \n", label[iprocess][2]); 
     }
   }
-  else if(idecay == 4) {
+  else if(idecay == 5) {
     phf  = GeneratorPythia6Jets(kPythia6Tune_Perugia2011);
     ctl->AddGenerator(phf, "jetjet", 1.);
     printf(">>>>> added generator for HF production:  %s \n", "jetjet");
   }   
+
+  if(idecay == 4) { //EvtGen for b-decays
+    AliGenEvtGen *gener = new AliGenEvtGen();
+    gener->SetParticleSwitchedOff(AliGenEvtGen::kBeautyPart);
+    ctl->AddGenerator(gener,"EvtGen",1.);
+  }
+
   return ctl;
 }