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[PWGLF] Enable event selection based on trigger and add like-sign analysis #11659

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Merged
maciacco merged 5 commits into from
Jun 23, 2025
Merged

[PWGLF] Enable event selection based on trigger and add like-sign analysis #11659

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8ff5a1f
Enable trigger selection and add like-sign analysis
wang-yuanzhe Jun 17, 2025
d7fbd58
Please consider the following formatting changes
alibuild Jun 17, 2025
c715f1b
Merge pull request #18 from alibuild/alibot-cleanup-11659
wang-yuanzhe Jun 17, 2025
815c130
make likesign selection code more clear
wang-yuanzhe Jun 18, 2025
3a296b4
Fix bug
wang-yuanzhe Jun 18, 2025
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1 change: 1 addition & 0 deletions PWGLF/DataModel/Reduced3BodyTables.h
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Expand Up @@ -48,10 +48,10 @@
DECLARE_SOA_INDEX_COLUMN_FULL(Collision, collision, int, RedCollisions, ""); //! Collision index

// track PID definition
DECLARE_SOA_COLUMN(TPCNSigmaPr, tpcNSigmaPr, float); //! Nsigma separation with the TPC detector for proton

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[name/o2-column] 

Use UpperCamelCase for names of O2 columns and matching lowerCamelCase names for their getters.
DECLARE_SOA_COLUMN(TPCNSigmaDe, tpcNSigmaDe, float); //! Nsigma separation with the TPC detector for deuteron

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[name/o2-column] 

Use UpperCamelCase for names of O2 columns and matching lowerCamelCase names for their getters.
DECLARE_SOA_COLUMN(TPCNSigmaPi, tpcNSigmaPi, float); //! Nsigma separation with the TPC detector for pion

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DECLARE_SOA_COLUMN(TOFNSigmaDe, tofNSigmaDe, float); //! Nsigma separation with the TOF detector for deuteron (recalculated)

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} // namespace reducedtracks3body

Expand Down Expand Up @@ -86,6 +86,7 @@
track::HasITS<track::v001::DetectorMap>,
track::HasTPC<track::v001::DetectorMap>,
track::HasTOF<track::v001::DetectorMap>,
track::HasTRD<track::v001::DetectorMap>,
track::TPCNClsFound<track::TPCNClsFindable, track::TPCNClsFindableMinusFound>,
track::TPCNClsCrossedRows<track::TPCNClsFindable, track::TPCNClsFindableMinusCrossedRows>,
track::v001::ITSClsSizeInLayer<track::ITSClusterSizes>,
Expand Down Expand Up @@ -123,10 +124,10 @@
DECLARE_SOA_INDEX_COLUMN_FULL(Collision, collision, int, RedCollisions, ""); //! Collision index
DECLARE_SOA_COLUMN(RadiusKF, radiusKF, float); //! phi of momentum of mother particle calculated by KF
DECLARE_SOA_COLUMN(PhiKF, phiKF, float); //! SV radius in x-y plane calculated by KF
DECLARE_SOA_COLUMN(PosZKF, poszKF, float); //! z position of SV calculated by KF

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DECLARE_SOA_COLUMN(RadiusDCA, radiusDCA, float); //! phi of momentum of mother particle calculated by dcaFitter
DECLARE_SOA_COLUMN(PhiDCA, phiDCA, float); //! SV radius in x-y plane calculated by dcaFitter
DECLARE_SOA_COLUMN(PosZDCA, poszDCA, float); //! z position of SV calculated by dcaFitter

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DECLARE_SOA_COLUMN(TrackedClSize, trackedClSize, float); //! average ITS cluster size (if tracked)
} // namespace reduceddecay3body

Expand Down
108 changes: 62 additions & 46 deletions PWGLF/TableProducer/Nuspex/decay3bodybuilder.cxx
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Expand Up @@ -8,57 +8,57 @@
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.

// ========================
/// \file decay3bodybuilder.cxx
/// \brief Builder task for 3-body hypertriton decay reconstruction (proton + pion + deuteron)
/// \author Yuanzhe Wang <yuanzhe.wang@cern.ch>
/// \author Carolina Reetz <c.reetz@cern.ch>
// ========================

#include <cmath>
#include <array>
#include <cstdlib>
#include <string>
#include <vector>
#include <unordered_map>
#include <algorithm>
#include <memory>
#include "TableHelper.h"

#include "Framework/runDataProcessing.h"
#include "Framework/AnalysisTask.h"
#include "Framework/AnalysisDataModel.h"
#include "Framework/ASoAHelpers.h"
#include "ReconstructionDataFormats/Track.h"
#include "Common/Core/RecoDecay.h"
#include "Common/Core/trackUtilities.h"
#include "PWGLF/DataModel/Reduced3BodyTables.h"
#include "PWGLF/DataModel/Vtx3BodyTables.h"
#include "PWGLF/DataModel/pidTOFGeneric.h"
#include "PWGLF/Utils/decay3bodyBuilderHelper.h"

#include "Common/Core/PID/PIDTOF.h"
#include "Common/Core/RecoDecay.h"
#include "Common/Core/trackUtilities.h"
#include "Common/DataModel/EventSelection.h"
#include "Common/DataModel/PIDResponse.h"
#include "Common/Core/PID/PIDTOF.h"
#include "TableHelper.h"
#include "Tools/KFparticle/KFUtilities.h"

#include "EventFiltering/Zorro.h"
#include "EventFiltering/ZorroSummary.h"
#include "Tools/KFparticle/KFUtilities.h"

#include "DetectorsBase/Propagator.h"
#include "DetectorsBase/GeometryManager.h"
#include "DataFormatsParameters/GRPObject.h"
#include "DataFormatsParameters/GRPMagField.h"
#include "CCDB/BasicCCDBManager.h"
#include "DataFormatsParameters/GRPMagField.h"
#include "DataFormatsParameters/GRPObject.h"
#include "DetectorsBase/GeometryManager.h"
#include "DetectorsBase/Propagator.h"
#include "Framework/ASoAHelpers.h"
#include "Framework/AnalysisDataModel.h"
#include "Framework/AnalysisTask.h"
#include "Framework/runDataProcessing.h"
#include "ReconstructionDataFormats/Track.h"

#include <algorithm>
#include <array>
#include <cmath>
#include <cstdlib>
#include <memory>
#include <string>
#include <unordered_map>
#include <vector>

#ifndef HomogeneousField
#define HomogeneousField
#endif

// includes KFParticle
#include "KFParticle.h"
#include "KFPTrack.h"
#include "KFPVertex.h"
#include "KFParticle.h"
#include "KFParticleBase.h"
#include "KFVertex.h"

Expand Down Expand Up @@ -125,6 +125,7 @@
Configurable<bool> doSkimmedProcessing{"doSkimmedProcessing", false, "Apply Zoroo counting in case of skimmed data input"};
Configurable<std::string> triggerList{"triggerList", "fTriggerEventF1Proton, fTrackedOmega, fTrackedXi, fOmegaLargeRadius, fDoubleOmega, fOmegaHighMult, fSingleXiYN, fQuadrupleXi, fDoubleXi, fhadronOmega, fOmegaXi, fTripleXi, fOmega, fGammaVeryLowPtEMCAL, fGammaVeryLowPtDCAL, fGammaHighPtEMCAL, fGammaLowPtEMCAL, fGammaVeryHighPtDCAL, fGammaVeryHighPtEMCAL, fGammaLowPtDCAL, fJetNeutralLowPt, fJetNeutralHighPt, fGammaHighPtDCAL, fJetFullLowPt, fJetFullHighPt, fEMCALReadout, fPCMandEE, fPHOSnbar, fPCMHighPtPhoton, fPHOSPhoton, fLD, fPPPHI, fPD, fLLL, fPLL, fPPL, fPPP, fLeadingPtTrack, fHighFt0cFv0Flat, fHighFt0cFv0Mult, fHighFt0Flat, fHighFt0Mult, fHighMultFv0, fHighTrackMult, fHfSingleNonPromptCharm3P, fHfSingleNonPromptCharm2P, fHfSingleCharm3P, fHfPhotonCharm3P, fHfHighPt2P, fHfSigmaC0K0, fHfDoubleCharm2P, fHfBeauty3P, fHfFemto3P, fHfFemto2P, fHfHighPt3P, fHfSigmaCPPK, fHfDoubleCharm3P, fHfDoubleCharmMix, fHfPhotonCharm2P, fHfV0Charm2P, fHfBeauty4P, fHfV0Charm3P, fHfSingleCharm2P, fHfCharmBarToXiBach, fSingleMuHigh, fSingleMuLow, fLMeeHMR, fDiMuon, fDiElectron, fLMeeIMR, fSingleE, fTrackHighPt, fTrackLowPt, fJetChHighPt, fJetChLowPt, fUDdiffLarge, fUDdiffSmall, fITSextremeIonisation, fITSmildIonisation, fH3L3Body, fHe, fH2", "List of triggers used to select events"};
Configurable<bool> onlyKeepInterestedTrigger{"onlyKeepInterestedTrigger", false, "Flag to keep only interested trigger"};
Configurable<bool> doLikeSign{"doLikeSign", false, "Flag to produce like-sign background. If true, require the sign of pion is as same as deuteron but not proton."};

// CCDB options
struct : ConfigurableGroup {
Expand All @@ -145,6 +146,7 @@
Configurable<bool> useSelections{"useSelections", true, "Apply selections during decay3body building"};
Configurable<bool> useTPCforPion{"useTPCforPion", false, "Flag to ask for TPC info for pion track (PID, nClusters), false: pion track can be ITS only"};
Configurable<bool> acceptTPCOnly{"acceptTPCOnly", false, "Accept TPC only tracks as daughters"};
Configurable<bool> askOnlyITSMatch{"askOnlyITSMatch", true, "ask only ITS match to distinguish TPC only tracks"};
Configurable<bool> calculateCovariance{"calculateCovariance", true, "Calculate candidate and daughter covariance matrices"};
// daughter track selections
Configurable<float> maxEtaDaughters{"maxEtaDaughters", 0.9, "Max eta of daughters"};
Expand Down Expand Up @@ -182,7 +184,7 @@
Configurable<int> n3bodyMixing{"n3bodyMixing", 0, "Number of decay3bodys to mix: 0 - value set to maximum bin entry in hDecay3BodyRadiusPhi, > 0 - manual setting"};
Configurable<int> mixingType{"mixingType", 0, "0: mix V0 from one event with bachelor from another, 1: mix pion and bachelor from one event with proton from another, 1: mix proton and bachelor from one event with pion from another "};
ConfigurableAxis bins3BodyRadius{"mixingOpts.bins3BodyRadius", {VARIABLE_WIDTH, 0.0f, 2.0f, 4.0f, 7.0f, 10.0f, 14.0f, 18.0f, 22.0f, 30.0f, 40.0f}, "Mixing bins - 3body radius"};
ConfigurableAxis bins3BodyPhi{"mixingOpts.bins3BodyPhi", {VARIABLE_WIDTH, -180 * TMath::Pi() / 180, -120 * TMath::Pi() / 180, -60 * TMath::Pi() / 180, 0, 60 * TMath::Pi() / 180, 120 * TMath::Pi() / 180, 180 * TMath::Pi() / 180}, "Mixing bins - 3body phi (rad)"};
ConfigurableAxis bins3BodyPhi{"mixingOpts.bins3BodyPhi", {VARIABLE_WIDTH, -180 * o2::constants::math::Deg2Rad, -120 * o2::constants::math::Deg2Rad, -60 * o2::constants::math::Deg2Rad, 0, 60 * o2::constants::math::Deg2Rad, 120 * o2::constants::math::Deg2Rad, 180 * o2::constants::math::Deg2Rad}, "Mixing bins - 3body phi (rad)"};
ConfigurableAxis bins3BodyPhiDegree{"mixingOpts.bins3BodyPhiDegree", {VARIABLE_WIDTH, -180, -120, -60, 0, 60, 120, 180}, "Mixing bins - 3body phi (degree)"};
ConfigurableAxis bins3BodyPosZ{"mixingOpts.bins3BodyPosZ", {VARIABLE_WIDTH, -500.0f, -200.0f, -100.0f, -70.0f, -60.0f, -50.0f, -40.0f, -35.0f, -30.0f, -25.0f, -20.0f, -15.0f, -13.0f, -10.0f, -8.0f, -6.0f, -4.0f, -2.0f, 0.0f, 2.0f, 4.0f, 6.0f, 8.0f, 10.0f, 13.0f, 15.0f, 20.0f, 25.0f, 30.0f, 35.0f, 40.0f, 50.0f, 60.0f, 70.0f, 100.0f, 200.0f, 500.0f}, "3body SV z position"};
Configurable<bool> selectPVPosZ3bodyMixing{"selectPVPosZ3bodyMixing", true, "Select same pvPosZ events in case of 3body mixing"};
Expand Down Expand Up @@ -264,6 +266,8 @@
// tracked cluster size
std::vector<int> fTrackedClSizeVector;

// trigger info
std::vector<bool> isTriggeredCollision;
// MC info
std::vector<bool> isGoodCollision;

Expand All @@ -290,7 +294,7 @@
}
matCorr = o2::base::Propagator::MatCorrType::USEMatCorrTGeo;
}
if (useMatCorrType == 2) {

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LOGF(info, "LUT correction requested, loading LUT");
lut = o2::base::MatLayerCylSet::rectifyPtrFromFile(ccdb->get<o2::base::MatLayerCylSet>(ccdbConfigurations.lutPath));
matCorr = o2::base::Propagator::MatCorrType::USEMatCorrLUT;
Expand Down Expand Up @@ -510,7 +514,7 @@
KFParticle::SetField(d_bz);
#endif

if (useMatCorrType == 2) {

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// setMatLUT only after magfield has been initalized
// (setMatLUT has implicit and problematic init field call if not)
LOG(info) << "Loading material look-up table for timestamp: " << timestamp;
Expand Down Expand Up @@ -629,7 +633,7 @@
helper.fitterV0.setBz(magField);
helper.fitter3body.setBz(magField);

if (useMatCorrType == 2) {

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// setMatLUT only after magfield has been initalized (setMatLUT has implicit and problematic init field call if not)
o2::base::Propagator::Instance()->setMatLUT(lut);
}
Expand All @@ -652,8 +656,14 @@
// prepare MC container (not necessarily used)
std::vector<bool> mcParticleIsReco;

if constexpr (soa::is_table<TBCs>) {
isTriggeredCollision.clear();
isTriggeredCollision.resize(collisions.size(), false);
}
// clear and reserve size for MC info vectors
if constexpr (soa::is_table<TMCParticles>) {
isGoodCollision.clear();
mcParticleIsReco.clear();
isGoodCollision.resize(mcCollisions.size(), false);
mcParticleIsReco.resize(mcParticles.size(), false);
}
Expand All @@ -670,13 +680,14 @@
}
}

isTriggeredCollision[collision.globalIndex()] = true;
// event counting
registry.fill(HIST("Counters/hEventCounter"), 0.5);
if (doSel8selection && !collision.sel8()) {
continue;
}
registry.fill(HIST("Counters/hEventCounter"), 1.5);
if (doPosZselection && (collision.posZ() >= 10.0f || collision.posZ() <= -10.0f)) {

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continue;
}
registry.fill(HIST("Counters/hEventCounter"), 2.5);
Expand Down Expand Up @@ -711,7 +722,7 @@
// skip decay3body without assigned collision
/// TODO: do we want this??
if (decay3body.collisionId() < 0) {
return;
continue;
}

// aquire collision
Expand All @@ -727,8 +738,11 @@
}

// event selection
if constexpr (soa::is_table<TBCs>) {
if (doSel8selection && !collision.sel8()) { // only when NOT running over reduced data
if constexpr (soa::is_table<TBCs>) { // only when NOT running over reduced data
if (doSel8selection && !collision.sel8()) {
continue;
}
if (onlyKeepInterestedTrigger && !isTriggeredCollision[collision.globalIndex()]) {
continue;
}
}
Expand All @@ -740,12 +754,12 @@
auto trackPos = decay3body.template track0_as<TTracksTo>();
auto trackNeg = decay3body.template track1_as<TTracksTo>();
auto trackDeuteron = decay3body.template track2_as<TTracksTo>();
auto trackProton = trackPos;
auto trackPion = trackNeg;
if (trackDeuteron.sign() < 0) {
trackProton = trackNeg;
trackPion = trackPos;
bool protonSign = trackDeuteron.sign() > 0;
if (doLikeSign) {
protonSign = -protonSign;
}
auto trackProton = protonSign ? trackPos : trackNeg;
auto trackPion = protonSign ? trackNeg : trackPos;

// get deuteron TOF PID
float tofNSigmaDeuteron;
Expand All @@ -772,6 +786,7 @@
decay3bodyBuilderOpts.useSelections,
decay3bodyBuilderOpts.useTPCforPion,
decay3bodyBuilderOpts.acceptTPCOnly,
decay3bodyBuilderOpts.askOnlyITSMatch,
decay3bodyBuilderOpts.calculateCovariance,
false /*isEventMixing*/)) {
continue;
Expand Down Expand Up @@ -863,7 +878,7 @@
// MC handling part: generated information of non-reco candidates
// ____________________________________________________________________
if constexpr (soa::is_table<TMCParticles>) {
for (auto& mcparticle : mcParticles) {
for (const auto& mcparticle : mcParticles) {
// MC info
resetMCInfo(this3BodyMCInfo);
this3BodyMCInfo.isReco = false;
Expand All @@ -877,14 +892,14 @@
this3BodyMCInfo.survivedEventSel = isGoodCollision[mcparticle.mcCollisionId()];

// check if MC particle is hypertriton
if (std::abs(mcparticle.pdgCode()) != 1010010030) {
if (std::abs(mcparticle.pdgCode()) != o2::constants::physics::Pdg::kHyperTriton) {
continue;
}

// check daughter identities
bool haveProton = false, havePion = false, haveDeuteron = false;
bool haveAntiProton = false, haveAntiPion = false, haveAntiDeuteron = false;
for (auto& mcparticleDaughter : mcparticle.template daughters_as<TMCParticles>()) {
for (const auto& mcparticleDaughter : mcparticle.template daughters_as<TMCParticles>()) {
if (mcparticleDaughter.pdgCode() == PDG_t::kProton)
haveProton = true;
if (mcparticleDaughter.pdgCode() == PDG_t::kProtonBar)
Expand All @@ -893,9 +908,9 @@
havePion = true;
if (mcparticleDaughter.pdgCode() == PDG_t::kPiMinus)
haveAntiPion = true;
if (mcparticleDaughter.pdgCode() == 1000010020)
if (mcparticleDaughter.pdgCode() == o2::constants::physics::Pdg::kDeuteron)
haveDeuteron = true;
if (mcparticleDaughter.pdgCode() == -1000010020)
if (mcparticleDaughter.pdgCode() == -o2::constants::physics::Pdg::kDeuteron)
haveAntiDeuteron = true;
}

Expand All @@ -907,7 +922,7 @@
this3BodyMCInfo.isTrueAntiH3L = true;
}
// get daughters
for (auto& mcparticleDaughter : mcparticle.template daughters_as<aod::McParticles>()) {
for (const auto& mcparticleDaughter : mcparticle.template daughters_as<aod::McParticles>()) {
if (std::abs(mcparticleDaughter.pdgCode()) == PDG_t::kProton) { // proton
this3BodyMCInfo.genMomProton = mcparticleDaughter.p();
this3BodyMCInfo.genPtProton = mcparticleDaughter.pt();
Expand All @@ -917,7 +932,7 @@
this3BodyMCInfo.genMomPion = mcparticleDaughter.p();
this3BodyMCInfo.genPtPion = mcparticleDaughter.pt();
this3BodyMCInfo.daughterPiPdgCode = mcparticleDaughter.pdgCode();
} else if (std::abs(mcparticleDaughter.pdgCode()) == 1000010020) { // deuteron
} else if (std::abs(mcparticleDaughter.pdgCode()) == o2::constants::physics::Pdg::kDeuteron) { // deuteron
this3BodyMCInfo.genMomDeuteron = mcparticleDaughter.p();
this3BodyMCInfo.genPtDeuteron = mcparticleDaughter.pt();
this3BodyMCInfo.daughterDePdgCode = mcparticleDaughter.pdgCode();
Expand Down Expand Up @@ -1168,6 +1183,7 @@
decay3bodyBuilderOpts.useSelections,
decay3bodyBuilderOpts.useTPCforPion,
decay3bodyBuilderOpts.acceptTPCOnly,
decay3bodyBuilderOpts.askOnlyITSMatch,
decay3bodyBuilderOpts.calculateCovariance,
true /*isEventMixing*/)) {
// fill analysis tables with built candidate
Expand All @@ -1183,14 +1199,14 @@
template <typename MCTrack3B>
int checkH3LTruth(MCTrack3B const& mcParticlePr, MCTrack3B const& mcParticlePi, MCTrack3B const& mcParticleDe, bool& isMuonReco)
{
if (std::abs(mcParticlePr.pdgCode()) != 2212 || std::abs(mcParticleDe.pdgCode()) != 1000010020) {
if (std::abs(mcParticlePr.pdgCode()) != PDG_t::kProton || std::abs(mcParticleDe.pdgCode()) != o2::constants::physics::Pdg::kDeuteron) {
return -1;
}
// check proton and deuteron mother
int prDeMomID = -1;
for (const auto& motherPr : mcParticlePr.template mothers_as<aod::McParticles>()) {
for (const auto& motherDe : mcParticleDe.template mothers_as<aod::McParticles>()) {
if (motherPr.globalIndex() == motherDe.globalIndex() && std::abs(motherPr.pdgCode()) == 1010010030) {
if (motherPr.globalIndex() == motherDe.globalIndex() && std::abs(motherPr.pdgCode()) == o2::constants::physics::Pdg::kHyperTriton) {
prDeMomID = motherPr.globalIndex();
break;
}
Expand All @@ -1199,14 +1215,14 @@
if (prDeMomID == -1) {
return -1;
}
if (std::abs(mcParticlePi.pdgCode()) != 211 && std::abs(mcParticlePi.pdgCode()) != 13) {
if (std::abs(mcParticlePi.pdgCode()) != PDG_t::kPiPlus && std::abs(mcParticlePi.pdgCode()) != PDG_t::kMuonMinus) {
return -1;
}
// check if the pion track is a muon coming from a pi -> mu + vu decay, if yes, take the mother pi
auto mcParticlePiTmp = mcParticlePi;
if (std::abs(mcParticlePiTmp.pdgCode()) == 13) {
if (std::abs(mcParticlePiTmp.pdgCode()) == PDG_t::kMuonMinus) {
for (const auto& motherPi : mcParticlePiTmp.template mothers_as<aod::McParticles>()) {
if (std::abs(motherPi.pdgCode()) == 211) {
if (std::abs(motherPi.pdgCode()) == PDG_t::kPiPlus) {
mcParticlePiTmp = motherPi;
isMuonReco = true;
break;
Expand Down
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