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RecoDecay::getMother: Catch wrong mothers from Run 2 #857

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Merged
jgrosseo merged 1 commit into from
Jun 14, 2022
Merged

RecoDecay::getMother: Catch wrong mothers from Run 2 #857

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18 changes: 14 additions & 4 deletions Common/Core/RecoDecay.h
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Original file line number Diff line number Diff line change
Expand Up @@ -582,18 +582,28 @@ class RecoDecay
if (sign) {
*sign = sgn;
}
std::vector<int> listId;
listId.push_back(particleMother.globalIndex());
while (particleMother.has_mothers()) {
if (depthMax > -1 && -stage >= depthMax) { // Maximum depth has been reached.
return -1;
}
if (particleMother.mothersIds()[0] == -1) { // Additional check for converted Run 2 MC
return -1;
}
particleMother = particleMother.template mothers_first_as<typename std::decay_t<T>::parent_t>(); // get mother 0
auto indexMotherTmp = particleMother.globalIndex();
// Check mother's PDG code.
auto PDGParticleIMother = particleMother.pdgCode(); // PDG code of the mother
//printf("getMother: ");
//for (int i = stage; i < 0; i++) // Indent to make the tree look nice.
// printf(" ");
//printf("Stage %d: Mother PDG: %d\n", stage, PDGParticleIMother);
// printf("getMother: ");
// for (int i = stage; i < 0; i++) // Indent to make the tree look nice.
// printf(" ");
// printf("Stage %d: Mother PDG: %d, Index: %d\n", stage, PDGParticleIMother, indexMotherTmp);
if (std::find(listId.begin(), listId.end(), indexMotherTmp) != listId.end()) {
LOGF(fatal, "Circular mothership at particle index %d", indexMotherTmp);
return -1;
}
listId.push_back(indexMotherTmp);
if (PDGParticleIMother == PDGMother) { // exact PDG match
sgn = 1;
indexMother = indexMotherTmp;
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