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[ALICE3] Save additional daughter information in otf multi-charm task #11335

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Merged
njacazio merged 1 commit into from
May 23, 2025
Merged

[ALICE3] Save additional daughter information in otf multi-charm task #11335

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25 changes: 22 additions & 3 deletions ALICE3/TableProducer/alice3-multicharm.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -131,6 +131,8 @@
ConfigurableAxis axisDecayLength{"axisDecayLength", {2000, 0, 2000}, "Decay lenght (#mum)"};
ConfigurableAxis axisTOFTrack{"axisTOFTrack", {1000, 0, 5000}, "TOF track time"};

ConfigurableAxis axisPiMass{"axisPiMass", {200, 0.089f, 0.189f}, "Pi Inv Mass (GeV/c^{2})"};
ConfigurableAxis axisPrMass{"axisPrMass", {200, 0.838f, 1.038f}, "Pr Inv Mass (GeV/c^{2})"};
ConfigurableAxis axisXiMass{"axisXiMass", {200, 1.221f, 1.421f}, "Xi Inv Mass (GeV/c^{2})"};
ConfigurableAxis axisXiCMass{"axisXiCMass", {200, 2.368f, 2.568f}, "XiC Inv Mass (GeV/c^{2})"};
ConfigurableAxis axisXiCCMass{"axisXiCCMass", {200, 3.521f, 3.721f}, "XiCC Inv Mass (GeV/c^{2})"};
Expand All @@ -145,9 +147,9 @@

HistogramRegistry histos{"histos", {}, OutputObjHandlingPolicy::AnalysisObject};

Partition<aod::McParticles> trueXi = aod::mcparticle::pdgCode == 3312;

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
Partition<aod::McParticles> trueXiC = aod::mcparticle::pdgCode == 4232;

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
Partition<aod::McParticles> trueXiCC = aod::mcparticle::pdgCode == 4422;

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.

// filter expressions for D mesons
static constexpr uint32_t trackSelectionPiFromXiC = 1 << kInnerTOFPion | 1 << kOuterTOFPion | 1 << kRICHPion | 1 << kTruePiFromXiC;
Expand Down Expand Up @@ -241,14 +243,14 @@
thisXiCCcandidate.parentTrackCovMatrix[5] = covVtx(2, 2);

// set relevant values
thisXiCCcandidate.dca = TMath::Sqrt(fitter.getChi2AtPCACandidate());

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[root/entity] 

Replace ROOT entities with equivalents from standard C++ or from O2.
if (thisXiCCcandidate.dca > dcaXiCCDaughtersSelection) {
return false;
}

thisXiCCcandidate.mass = RecoDecay::m(array{array{thisXiCCcandidate.prong0mom[0], thisXiCCcandidate.prong0mom[1], thisXiCCcandidate.prong0mom[2]}, array{thisXiCCcandidate.prong1mom[0], thisXiCCcandidate.prong1mom[1], thisXiCCcandidate.prong1mom[2]}}, array{mass0, mass1});

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[std-prefix] 

Use std:: prefix for names from the std namespace.
thisXiCCcandidate.pt = std::hypot(thisXiCCcandidate.prong0mom[0] + thisXiCCcandidate.prong1mom[0], thisXiCCcandidate.prong0mom[1] + thisXiCCcandidate.prong1mom[1]);
thisXiCCcandidate.eta = RecoDecay::eta(array{thisXiCCcandidate.prong0mom[0] + thisXiCCcandidate.prong1mom[0], thisXiCCcandidate.prong0mom[1] + thisXiCCcandidate.prong1mom[1], thisXiCCcandidate.prong0mom[2] + thisXiCCcandidate.prong1mom[2]});

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[std-prefix] 

Use std:: prefix for names from the std namespace.
return true;
}

Expand Down Expand Up @@ -311,13 +313,13 @@
thisXiCcandidate.parentTrackCovMatrix[5] = covVtx(2, 2);

// set relevant values
thisXiCcandidate.dca = TMath::Sqrt(fitter3.getChi2AtPCACandidate());

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[root/entity] 

Replace ROOT entities with equivalents from standard C++ or from O2.
if (thisXiCcandidate.dca > dcaXiCDaughtersSelection) {
return false;
}
thisXiCcandidate.mass = RecoDecay::m(array{array{thisXiCcandidate.prong0mom[0], thisXiCcandidate.prong0mom[1], thisXiCcandidate.prong0mom[2]}, array{thisXiCcandidate.prong1mom[0], thisXiCcandidate.prong1mom[1], thisXiCcandidate.prong1mom[2]}, array{thisXiCcandidate.prong2mom[0], thisXiCcandidate.prong2mom[1], thisXiCcandidate.prong2mom[2]}}, array{p0mass, p1mass, p2mass});

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[std-prefix] 

Use std:: prefix for names from the std namespace.
thisXiCcandidate.pt = std::hypot(thisXiCcandidate.prong0mom[0] + thisXiCcandidate.prong1mom[0] + thisXiCcandidate.prong2mom[0], thisXiCcandidate.prong0mom[1] + thisXiCcandidate.prong1mom[1] + thisXiCcandidate.prong2mom[1]);
thisXiCcandidate.eta = RecoDecay::eta(array{thisXiCcandidate.prong0mom[0] + thisXiCcandidate.prong1mom[0] + thisXiCcandidate.prong2mom[0], thisXiCcandidate.prong0mom[1] + thisXiCcandidate.prong1mom[1] + thisXiCcandidate.prong2mom[1], thisXiCcandidate.prong0mom[2] + thisXiCcandidate.prong1mom[2] + thisXiCcandidate.prong2mom[2]});

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[std-prefix] 

Use std:: prefix for names from the std namespace.
return true;
}

Expand All @@ -332,7 +334,7 @@
auto mcParticle1 = track1.template mcParticle_as<aod::McParticles>();
auto mcParticle2 = track2.template mcParticle_as<aod::McParticles>();
if (mcParticle1.has_mothers() && mcParticle2.has_mothers()) {
for (auto& mcParticleMother1 : mcParticle1.template mothers_as<aod::McParticles>()) {

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[const-ref-in-for-loop] 

Use constant references for non-modified iterators in range-based for loops.
for (auto& mcParticleMother2 : mcParticle2.template mothers_as<aod::McParticles>()) {
if (mcParticleMother1.globalIndex() == mcParticleMother2.globalIndex()) {
returnValue = true;
Expand Down Expand Up @@ -412,7 +414,15 @@

histos.add("hEtaXiCC", "hEtaXiCC", kTH1D, {axisEta});
histos.add("hPtXiCC", "hPtXiCC", kTH1D, {axisPt});
histos.add("h3dMassXiCC", "h3dMassXiCC", kTH3D, {axisPt, axisEta, axisXiCCMass});
histos.add("h3dXicc", "h3dXicc", kTH3D, {axisPt, axisEta, axisXiCCMass});
histos.add("h3dXic", "h3dXic", kTH3D, {axisPt, axisEta, axisXiCMass});
histos.add("h3dXi", "h3dXi", kTH3D, {axisPt, axisEta, axisXiMass});
histos.add("h3dPicc", "h3dPicc", kTH3D, {axisPt, axisEta, axisPiMass});
histos.add("h3dPi1c", "h3dPi1c", kTH3D, {axisPt, axisEta, axisPiMass});
histos.add("h3dPi2c", "h3dPi2c", kTH3D, {axisPt, axisEta, axisPiMass});
histos.add("h3dBach", "h3dBach", kTH3D, {axisPt, axisEta, axisPiMass});
histos.add("h3dPos", "h3dPos", kTH3D, {axisPt, axisEta, axisPrMass});
histos.add("h3dNeg", "h3dNeg", kTH3D, {axisPt, axisEta, axisPiMass});

histos.add("hDCAXiCDaughters", "hDCAXiCDaughters", kTH1D, {axisDCAXiCDaughters});
histos.add("hDCAXiCCDaughters", "hDCAXiCCDaughters", kTH1D, {axisDCAXiCCDaughters});
Expand Down Expand Up @@ -516,6 +526,11 @@
auto piFromLa = xiCand.negTrack_as<alice3tracks>(); // de-reference neg track
auto prFromLa = xiCand.posTrack_as<alice3tracks>(); // de-reference pos track

histos.fill(HIST("h3dXi"), xi.pt(), xi.eta(), xiCand.mXi());
histos.fill(HIST("h3dBach"), piFromXi.pt(), piFromXi.eta(), o2::constants::physics::MassPionCharged);
histos.fill(HIST("h3dNeg"), piFromLa.pt(), piFromLa.eta(), o2::constants::physics::MassPionCharged);
histos.fill(HIST("h3dPos"), prFromLa.pt(), prFromLa.eta(), o2::constants::physics::MassProton);

if (!bitcheck(xi.decayMap(), kTrueXiFromXiC))
continue;

Expand Down Expand Up @@ -543,6 +558,7 @@
if (pi1cTOFDiffInner > piFromXiC_tofDiffInner)
continue; // did not arrive at expected time

histos.fill(HIST("h3dPi1c"), pi1c.pt(), pi1c.eta(), o2::constants::physics::MassPionCharged);
histos.fill(HIST("hInnerTOFTrackTimeRecoPi1c"), pi1cTOFDiffInner);
// second pion from XiC decay for starts here
for (auto const& pi2c : tracksPiFromXiCgrouped) {
Expand All @@ -564,6 +580,8 @@
continue; // did not arrive at expected time

histos.fill(HIST("hInnerTOFTrackTimeRecoPi2c"), pi2cTOFDiffInner);
histos.fill(HIST("h3dPi2c"), pi2c.pt(), pi2c.eta(), o2::constants::physics::MassPionCharged);

// if I am here, it means this is a triplet to be considered for XiC vertexing.
// will now attempt to build a three-body decay candidate with these three track rows.

Expand Down Expand Up @@ -613,7 +631,7 @@
histos.fill(HIST("hDCAxyXiC"), std::fabs(xicdcaXY * 1e+4));
histos.fill(HIST("hDCAzXiC"), std::fabs(xicdcaZ * 1e+4));
histos.fill(HIST("hMassXiC"), thisXiCcandidate.mass);

histos.fill(HIST("h3dXic"), thisXiCcandidate.pt, thisXiCcandidate.eta, thisXiCcandidate.mass);
// attempt XiCC finding
uint32_t nCombinationsCC = 0;
for (auto const& picc : tracksPiFromXiCCgrouped) {
Expand All @@ -633,6 +651,7 @@
continue; // did not arrive at expected time

histos.fill(HIST("hInnerTOFTrackTimeRecoPicc"), piccTOFDiffInner);
histos.fill(HIST("h3dPicc"), picc.pt(), picc.eta(), o2::constants::physics::MassPionCharged);

o2::track::TrackParCov piccTrack = getTrackParCov(picc);
nCombinationsCC++;
Expand Down Expand Up @@ -710,7 +729,7 @@
histos.fill(HIST("hMassXiCC"), thisXiCCcandidate.mass);
histos.fill(HIST("hPtXiCC"), thisXiCCcandidate.pt);
histos.fill(HIST("hEtaXiCC"), thisXiCCcandidate.eta);
histos.fill(HIST("h3dMassXiCC"), thisXiCCcandidate.pt, thisXiCCcandidate.eta, thisXiCCcandidate.mass);
histos.fill(HIST("h3dXicc"), thisXiCCcandidate.pt, thisXiCCcandidate.eta, thisXiCCcandidate.mass);

// produce multi-charm table for posterior analysis
if (fillDerivedTable) {
Expand Down
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