//
// select mode
+ Int_t products[2];
+ Int_t mult[2];
switch (decay)
{
ForceParticleDecay( 223,13,2); // omega
ForceParticleDecay( 333,13,2); // phi
ForceParticleDecay( 443,13,2); // J/Psi
- ForceParticleDecay(100443,13,2); // Psi'
+ ForceParticleDecay(100443,13,2);// Psi'
ForceParticleDecay( 553,13,2); // Upsilon
- ForceParticleDecay(100553,13,2); // Upsilon'
- ForceParticleDecay(200553,13,2); // Upsilon''
+ ForceParticleDecay(100553,13,2);// Upsilon'
+ ForceParticleDecay(200553,13,2);// Upsilon''
break;
case kSemiElectronic:
ForceParticleDecay( 411,11,1); // D+/-
ForceParticleDecay( 221,11,2); // eta
ForceParticleDecay( 223,11,2); // omega
ForceParticleDecay( 443,11,2); // J/Psi
- ForceParticleDecay(100443,11,2); // Psi'
+ ForceParticleDecay(100443,11,2);// Psi'
ForceParticleDecay( 553,11,2); // Upsilon
- ForceParticleDecay(100553,11,2); // Upsilon'
- ForceParticleDecay(200553,11,2); // Upsilon''
+ ForceParticleDecay(100553,11,2);// Upsilon'
+ ForceParticleDecay(200553,11,2);// Upsilon''
break;
case kBJpsiDiMuon:
- ForceParticleDecay( 511,443,1); // B0
- ForceParticleDecay( 521,443,1); // B+/-
- ForceParticleDecay( 531,443,1); // B_s
- ForceParticleDecay( 5122,443,1); // Lambda_b
- ForceParticleDecay( 443,13,2); // J/Psi
+
+ products[0] = 443;
+ products[1] = 100443;
+ mult[0] = 1;
+ mult[1] = 1;
+
+ ForceParticleDecay( 511, products, mult, 2); // B0 -> J/Psi (Psi') X
+ ForceParticleDecay( 521, products, mult, 2); // B+/- -> J/Psi (Psi') X
+ ForceParticleDecay( 531, products, mult, 2); // B_s -> J/Psi (Psi') X
+ ForceParticleDecay( 5122, products, mult, 2); // Lambda_b -> J/Psi (Psi') X
+ ForceParticleDecay( 100443, 443, 1); // Psi' -> J/Psi X
+ ForceParticleDecay( 443,13,2); // J/Psi -> mu+ mu-
break;
case kBPsiPrimeDiMuon:
ForceParticleDecay( 511,30443,1); // B0
void AliDecayerPythia::ForceParticleDecay(Int_t particle, Int_t product, Int_t mult)
{
//
-// force decay of particle into products with multiplicity mult
+// Force decay of particle into products with multiplicity mult
Int_t kc=fPythia->Pycomp(particle);
fPythia->SetMDCY(kc,1,1);
}
}
+void AliDecayerPythia::ForceParticleDecay(Int_t particle, Int_t* products, Int_t* mult, Int_t npart)
+{
+//
+// Force decay of particle into products with multiplicity mult
+
+ Int_t kc=fPythia->Pycomp(particle);
+ fPythia->SetMDCY(kc,1,1);
+ Int_t ifirst=fPythia->GetMDCY(kc,2);
+ Int_t ilast=ifirst+fPythia->GetMDCY(kc,3)-1;
+ fBraPart[kc] = 1;
+//
+// Loop over decay channels
+ for (Int_t channel = ifirst; channel <= ilast; channel++) {
+ Int_t nprod = 0;
+ for (Int_t i = 0; i < npart; i++) {
+ nprod += (CountProducts(channel, products[i]) >= mult[i]);
+ }
+ if (nprod) {
+ fPythia->SetMDME(channel,1,1);
+ } else {
+ fPythia->SetMDME(channel,1,0);
+ fBraPart[kc]-=fPythia->GetBRAT(channel);
+ }
+ }
+}
+
void AliDecayerPythia::DefineParticles()
{
//