diff --git a/PYTHIA6/AliPythia6/AliDecayerPythia.cxx b/PYTHIA6/AliPythia6/AliDecayerPythia.cxx index 12090daf8bb..cbe7fdd80db 100644 --- a/PYTHIA6/AliPythia6/AliDecayerPythia.cxx +++ b/PYTHIA6/AliPythia6/AliDecayerPythia.cxx @@ -591,7 +591,17 @@ void AliDecayerPythia::ForceDecay() ForceHadronicD(0,0,4); break; case kEtaPrime: - ForceParticleDecay(331,22,2); + if(gRandom->Rndm()<0.5) { + products1[0]=211; + products1[1]=-211; + products1[2]=221; + mult1[0]=1; + mult1[1]=1; + mult1[2]=1; + ForceParticleDecay(331,products1,mult1,1); + } else { + ForceParticleDecay(331,22,2); + } break; } }