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Data model fix: avoid classifying TPC loopers as physical primary #15609

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Data model fix: avoid classifying TPC loopers as physical primary #15609

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6ff6862
Transparent fix proposal draft 1
ddobrigk Jul 17, 2026
3a0a37a
Please consider the following formatting changes
alibuild Jul 17, 2026
f22de23
Merge pull request #41 from alibuild/alibot-cleanup-15609
ddobrigk Jul 17, 2026
0eb94bd
Fix whitespace
ddobrigk Jul 17, 2026
afb61fa
Address only the bug
ddobrigk Jul 18, 2026
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54 changes: 40 additions & 14 deletions Framework/Core/include/Framework/AnalysisDataModel.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1984,34 +1984,60 @@ DECLARE_SOA_EXPRESSION_COLUMN(Y, y, float, //! Particle rapidity, conditionally
(aod::mcparticle::e - aod::mcparticle::pz))));
} // namespace mcparticle

namespace mcparticle_v2
{
// for improved getters with protection against incorrect physical primary tagging
// note: this has to be declared in a separate namespace so it does not conflict with existing
// derived data table declarations in O2Physics
DECLARE_SOA_DYNAMIC_COLUMN(IsPhysicalPrimary, isPhysicalPrimary, //! True if particle is considered a physical primary according to the ALICE definition
[](uint8_t input_flags, float vx, float vy) -> bool {
if((std::hypot(vx, vy) > o2::aod::mcparticle::maxRadiusForPhysicalPrimary) && ((input_flags & o2::aod::mcparticle::enums::PhysicalPrimary) == o2::aod::mcparticle::enums::PhysicalPrimary)){
return o2::aod::mcparticle::enums::FromBackgroundEvent;
}
return (input_flags & o2::aod::mcparticle::enums::PhysicalPrimary) == o2::aod::mcparticle::enums::PhysicalPrimary; });

// avoid that the stored flags are provided unprotected via
// the getter '.flags': analysers will get the correct bit map transparently
DECLARE_SOA_COLUMN(Flags, storedFlags, uint8_t); //! ALICE specific flags, see MCParticleFlags. Do not use directly. Use the dynamic columns, e.g. producedByGenerator()
DECLARE_SOA_DYNAMIC_COLUMN(McParticleFlags, flags, //! protected against
[](uint8_t input_flags, float vx, float vy) -> uint8_t {
if((std::hypot(vx, vy) > o2::aod::mcparticle::maxRadiusForPhysicalPrimary) && ((input_flags & o2::aod::mcparticle::enums::PhysicalPrimary) == o2::aod::mcparticle::enums::PhysicalPrimary)){
return o2::aod::mcparticle::enums::FromBackgroundEvent;
}
return input_flags; });

} // namespace mcparticle_v2

DECLARE_SOA_TABLE_FULL(StoredMcParticles_000, "McParticles", "AOD", "MCPARTICLE", //! MC particle table, version 000
o2::soa::Index<>, mcparticle::McCollisionId,
mcparticle::PdgCode, mcparticle::StatusCode, mcparticle::Flags,
mcparticle::PdgCode, mcparticle::StatusCode, mcparticle_v2::Flags,
mcparticle::Mother0Id, mcparticle::Mother1Id,
mcparticle::Daughter0Id, mcparticle::Daughter1Id, mcparticle::Weight,
mcparticle::Px, mcparticle::Py, mcparticle::Pz, mcparticle::E,
mcparticle::Vx, mcparticle::Vy, mcparticle::Vz, mcparticle::Vt,
mcparticle::PVector<mcparticle::Px, mcparticle::Py, mcparticle::Pz>,
mcparticle::ProducedByGenerator<mcparticle::Flags>,
mcparticle::FromBackgroundEvent<mcparticle::Flags>,
mcparticle::GetGenStatusCode<mcparticle::Flags, mcparticle::StatusCode>,
mcparticle::GetHepMCStatusCode<mcparticle::Flags, mcparticle::StatusCode>,
mcparticle::GetProcess<mcparticle::Flags, mcparticle::StatusCode>,
mcparticle::IsPhysicalPrimary<mcparticle::Flags>);
mcparticle::ProducedByGenerator<mcparticle_v2::Flags>,
mcparticle::FromBackgroundEvent<mcparticle_v2::Flags>,
mcparticle::GetGenStatusCode<mcparticle_v2::Flags, mcparticle::StatusCode>,
mcparticle::GetHepMCStatusCode<mcparticle_v2::Flags, mcparticle::StatusCode>,
mcparticle::GetProcess<mcparticle_v2::Flags, mcparticle::StatusCode>,
mcparticle_v2::McParticleFlags<mcparticle_v2::Flags, mcparticle::Vx, mcparticle::Vy>,
mcparticle_v2::IsPhysicalPrimary<mcparticle_v2::Flags, mcparticle::Vx, mcparticle::Vy>);

DECLARE_SOA_TABLE_FULL_VERSIONED(StoredMcParticles_001, "McParticles", "AOD", "MCPARTICLE", 1, //! MC particle table, version 001
o2::soa::Index<>, mcparticle::McCollisionId,
mcparticle::PdgCode, mcparticle::StatusCode, mcparticle::Flags,
mcparticle::PdgCode, mcparticle::StatusCode, mcparticle_v2::Flags,
mcparticle::MothersIds, mcparticle::DaughtersIdSlice, mcparticle::Weight,
mcparticle::Px, mcparticle::Py, mcparticle::Pz, mcparticle::E,
mcparticle::Vx, mcparticle::Vy, mcparticle::Vz, mcparticle::Vt,
mcparticle::PVector<mcparticle::Px, mcparticle::Py, mcparticle::Pz>,
mcparticle::ProducedByGenerator<mcparticle::Flags>,
mcparticle::FromBackgroundEvent<mcparticle::Flags>,
mcparticle::GetGenStatusCode<mcparticle::Flags, mcparticle::StatusCode>,
mcparticle::GetHepMCStatusCode<mcparticle::Flags, mcparticle::StatusCode>,
mcparticle::GetProcess<mcparticle::Flags, mcparticle::StatusCode>,
mcparticle::IsPhysicalPrimary<mcparticle::Flags>);
mcparticle::ProducedByGenerator<mcparticle_v2::Flags>,
mcparticle::FromBackgroundEvent<mcparticle_v2::Flags>,
mcparticle::GetGenStatusCode<mcparticle_v2::Flags, mcparticle::StatusCode>,
mcparticle::GetHepMCStatusCode<mcparticle_v2::Flags, mcparticle::StatusCode>,
mcparticle::GetProcess<mcparticle_v2::Flags, mcparticle::StatusCode>,
mcparticle_v2::McParticleFlags<mcparticle_v2::Flags, mcparticle::Vx, mcparticle::Vy>,
mcparticle_v2::IsPhysicalPrimary<mcparticle_v2::Flags, mcparticle::Vx, mcparticle::Vy>);

DECLARE_SOA_EXTENDED_TABLE(McParticles_000, StoredMcParticles_000, "EXMCPARTICLE", 0, //! Basic MC particle properties
mcparticle::Phi,
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5 changes: 5 additions & 0 deletions Framework/Core/include/Framework/DataTypes.h
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Original file line number Diff line number Diff line change
Expand Up @@ -148,6 +148,11 @@ enum ForwardTrackTypeEnum : uint8_t {
};
} // namespace o2::aod::fwdtrack

namespace o2::aod::mcparticle
{
constexpr float maxRadiusForPhysicalPrimary{5.f};
}

namespace o2::aod::mcparticle::enums
{
enum MCParticleFlags : uint8_t {
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