small change in decay name

Author: Yiping Wang

MC/config/PWGDQ/EvtGen/GeneratorEvtGen.C

@@ -42,7 +42,7 @@ enum DecayModeEvt { kEvtAll = 0,
                     kEvtElectronEM,
                     kEvtDiElectronEM,
                     kEvtGammaEM,
-                    kEvtBPsiJpsiPiPi,
+                    kEvtBtoPsi2SToJpsiPiPi,
                     kEvtBeautyUpgrade };
 
 namespace o2
@@ -356,7 +356,7 @@ class GeneratorEvtGen : public T
       case kEvtBeautyUpgrade:
         SetDecayTable(Form("%s/BEAUTYUPGRADE.DEC", pathO2.Data()));
         break;
-      case kEvtBPsiJpsiPiPi:
+      case kEvtBtoPsi2SToJpsiPiPi:
         SetDecayTable(Form("%s/BTOPSITOJPSIPIPI.DEC", pathO2.Data()));
         break;
     }

MC/config/PWGDQ/external/generator/generator_pythia8_NonPromptSignals_gaptriggered_dq.C

@@ -373,7 +373,7 @@ FairGenerator*
     printf("PDG %d \n", std::stoi(spdg));
     gen->addHadronPDGs(std::stoi(spdg));
   }
-  gen->SetForceDecay(kEvtBPsiJpsiPiPi);
+  gen->SetForceDecay(kEvtBtoPsi2SToJpsiPiPi);
 
   // set random seed
   gen->readString("Random:setSeed on");