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[PWGEM/Dilepton] add QA histograms for fwd DCA #14456

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Merged
dsekihat merged 1 commit into from
Jan 11, 2026
+28 −16
Merged

[PWGEM/Dilepton] add QA histograms for fwd DCA #14456

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12 changes: 9 additions & 3 deletions PWGEM/Dilepton/Core/SingleTrackQC.h
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Original file line number Diff line number Diff line change
Expand Up @@ -47,12 +47,12 @@
#include <unordered_map>
#include <vector>

using namespace o2;

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[using-directive] 

Do not put using directives at global scope in headers.
using namespace o2::aod;

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[using-directive] 

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using namespace o2::framework;

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[using-directive] 

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using namespace o2::framework::expressions;

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[using-directive] 

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using namespace o2::soa;

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[using-directive] 

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using namespace o2::aod::pwgem::dilepton::utils::emtrackutil;

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[using-directive] 

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using MyCollisions = soa::Join<aod::EMEvents, aod::EMEventsMult, aod::EMEventsCent>;
using MyCollision = MyCollisions::iterator;
Expand Down Expand Up @@ -301,6 +301,8 @@
fRegistry.add("Track/positive/hDCAxRes_Pt", "DCA_{x} resolution vs. pT;p_{T} (GeV/c);DCA_{x} resolution (#mum)", kTH2F, {{200, 0, 10}, {500, 0, 500}}, false);
fRegistry.add("Track/positive/hDCAyRes_Pt", "DCA_{y} resolution vs. pT;p_{T} (GeV/c);DCA_{y} resolution (#mum)", kTH2F, {{200, 0, 10}, {500, 0, 500}}, false);
fRegistry.add("Track/positive/hDCAxyRes_Pt", "DCA_{xy} resolution vs. pT;p_{T} (GeV/c);DCA_{xy} resolution (#mum)", kTH2F, {{200, 0, 10}, {500, 0, 500}}, false);
fRegistry.add("Track/positive/hDCAx_PosZ", "DCAx vs. posZ;Z_{vtx} (cm);DCA_{x} (cm)", kTH2F, {{200, -10, +10}, {200, -1, +1}}, false);
fRegistry.add("Track/positive/hDCAy_PosZ", "DCAy vs. posZ;Z_{vtx} (cm);DCA_{y} (cm)", kTH2F, {{200, -10, +10}, {200, -1, +1}}, false);
fRegistry.add("Track/positive/hNclsMCH", "number of MCH clusters", kTH1F, {{21, -0.5, 20.5}}, false);
fRegistry.add("Track/positive/hNclsMFT", "number of MFT clusters", kTH1F, {{11, -0.5, 10.5}}, false);
fRegistry.add("Track/positive/hPDCA", "pDCA;R at absorber end (cm);p #times DCA (GeV/c #upoint cm)", kTH2F, {{100, 0, 100}, {100, 0.0f, 1000}}, false);
Expand Down Expand Up @@ -350,10 +352,10 @@
if (mRunNumber == collision.runNumber()) {
return;
}
if (d_bz_input > -990) {

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[magic-number] 

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d_bz = d_bz_input;
o2::parameters::GRPMagField grpmag;
if (std::fabs(d_bz) > 1e-5) {

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grpmag.setL3Current(30000.f / (d_bz / 5.0f));
}
o2::base::Propagator::initFieldFromGRP(&grpmag);
Expand Down Expand Up @@ -508,7 +510,7 @@
fDimuonCut.SetMatchingChi2MCHMID(0.f, dimuoncuts.cfg_max_matching_chi2_mchmid);
fDimuonCut.SetDCAxy(0.f, dimuoncuts.cfg_max_dcaxy);
fDimuonCut.SetRabs(dimuoncuts.cfg_min_rabs, dimuoncuts.cfg_max_rabs);
fDimuonCut.SetMaxPDCARabsDep([&](float rabs) { return (rabs < 26.5 ? 594.f : 324.f); });

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[magic-number] 

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fDimuonCut.SetMaxdPtdEtadPhiwrtMCHMID(dimuoncuts.cfg_max_relDPt_wrt_matchedMCHMID, dimuoncuts.cfg_max_DEta_wrt_matchedMCHMID, dimuoncuts.cfg_max_DPhi_wrt_matchedMCHMID); // this is relevant for global muons
fDimuonCut.SetMFTHitMap(dimuoncuts.requireMFTHitMap, dimuoncuts.requiredMFTDisks);
}
Expand Down Expand Up @@ -608,8 +610,8 @@
}
}

template <typename TTrack>
void fillMuonInfo(TTrack const& track)
template <typename TTrack, typename TCollision>
void fillMuonInfo(TTrack const& track, TCollision const& collision)
{
float weight = 1.f;
if (cfgApplyWeightTTCA) {
Expand All @@ -633,6 +635,8 @@
fRegistry.fill(HIST("Track/positive/hDCAxRes_Pt"), track.pt(), std::sqrt(track.cXXatDCA()) * 1e+4);
fRegistry.fill(HIST("Track/positive/hDCAyRes_Pt"), track.pt(), std::sqrt(track.cYYatDCA()) * 1e+4);
fRegistry.fill(HIST("Track/positive/hDCAxyRes_Pt"), track.pt(), sigmaFwdDcaXY(track) * 1e+4);
fRegistry.fill(HIST("Track/positive/hDCAx_PosZ"), collision.posZ(), track.fwdDcaX());
fRegistry.fill(HIST("Track/positive/hDCAy_PosZ"), collision.posZ(), track.fwdDcaY());
fRegistry.fill(HIST("Track/positive/hNclsMCH"), track.nClusters());
fRegistry.fill(HIST("Track/positive/hNclsMFT"), track.nClustersMFT());
fRegistry.fill(HIST("Track/positive/hPDCA"), track.rAtAbsorberEnd(), track.pDca());
Expand All @@ -652,6 +656,8 @@
fRegistry.fill(HIST("Track/negative/hDCAxRes_Pt"), track.pt(), std::sqrt(track.cXXatDCA()) * 1e+4);
fRegistry.fill(HIST("Track/negative/hDCAyRes_Pt"), track.pt(), std::sqrt(track.cYYatDCA()) * 1e+4);
fRegistry.fill(HIST("Track/negative/hDCAxyRes_Pt"), track.pt(), sigmaFwdDcaXY(track) * 1e+4);
fRegistry.fill(HIST("Track/negative/hDCAx_PosZ"), collision.posZ(), track.fwdDcaX());
fRegistry.fill(HIST("Track/negative/hDCAy_PosZ"), collision.posZ(), track.fwdDcaY());
fRegistry.fill(HIST("Track/negative/hNclsMCH"), track.nClusters());
fRegistry.fill(HIST("Track/negative/hNclsMFT"), track.nClustersMFT());
fRegistry.fill(HIST("Track/negative/hPDCA"), track.rAtAbsorberEnd(), track.pDca());
Expand Down Expand Up @@ -715,7 +721,7 @@
continue;
}

fillMuonInfo(track);
fillMuonInfo(track, collision);
} // end of track loop
}
} // end of collision loop
Expand Down Expand Up @@ -891,7 +897,7 @@
if (collision.sel8()) {
fRegistry.fill(HIST("Event/norm/hCollisionCounter"), 10.0);
}
if (std::fabs(collision.posZ()) < 10.0) {

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fRegistry.fill(HIST("Event/norm/hCollisionCounter"), 11.0);
}
if (collision.selection_bit(o2::aod::evsel::kNoCollInTimeRangeStandard)) {
Expand Down
32 changes: 19 additions & 13 deletions PWGEM/Dilepton/Core/SingleTrackQCMC.h
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Expand Up @@ -351,6 +351,8 @@ struct SingleTrackQCMC {
fRegistry.add("Track/PromptLF/positive/hDCAxRes_Pt", "DCA_{x} resolution vs. pT;p_{T} (GeV/c);DCA_{x} resolution (#mum)", kTH2F, {{200, 0, 10}, {500, 0, 500}}, false);
fRegistry.add("Track/PromptLF/positive/hDCAyRes_Pt", "DCA_{y} resolution vs. pT;p_{T} (GeV/c);DCA_{y} resolution (#mum)", kTH2F, {{200, 0, 10}, {500, 0, 500}}, false);
fRegistry.add("Track/PromptLF/positive/hDCAxyRes_Pt", "DCA_{xy} resolution vs. pT;p_{T} (GeV/c);DCA_{xy} resolution (#mum)", kTH2F, {{200, 0, 10}, {500, 0, 500}}, false);
fRegistry.add("Track/PromptLF/positive/hDCAx_PosZ", "DCA_{x} vs. posZ;Z_{vtx} (cm);DCA_{x} (cm)", kTH2F, {{200, -10, 10}, {200, -1, +1}}, false);
fRegistry.add("Track/PromptLF/positive/hDCAy_PosZ", "DCA_{y} vs. posZ;Z_{vtx} (cm);DCA_{y} (cm)", kTH2F, {{200, -10, 10}, {200, -1, +1}}, false);
fRegistry.add("Track/PromptLF/positive/hNclsMCH", "number of MCH clusters", kTH1F, {{21, -0.5, 20.5}}, false);
fRegistry.add("Track/PromptLF/positive/hNclsMFT", "number of MFT clusters", kTH1F, {{11, -0.5, 10.5}}, false);
fRegistry.add("Track/PromptLF/positive/hPDCA", "pDCA;R at absorber (cm);p #times DCA (GeV/c #upoint cm)", kTH2F, {{100, 0, 100}, {100, 0.0f, 1000}}, false);
Expand Down Expand Up @@ -614,13 +616,13 @@ struct SingleTrackQCMC {
}
}

template <int lepton_source_id, typename TMCParticles, typename TTrack>
void fillTrackInfo(TTrack const& track)
template <int lepton_source_id, typename TMCParticles, typename TTrack, typename TCollision>
void fillTrackInfo(TTrack const& track, TCollision const& collision)
{
if constexpr (pairtype == o2::aod::pwgem::dilepton::utils::pairutil::DileptonPairType::kDielectron) {
fillElectronInfo<lepton_source_id, TMCParticles>(track);
} else if constexpr (pairtype == o2::aod::pwgem::dilepton::utils::pairutil::DileptonPairType::kDimuon) {
fillMuonInfo<lepton_source_id, TMCParticles>(track);
fillMuonInfo<lepton_source_id, TMCParticles>(track, collision);
}
}

Expand Down Expand Up @@ -734,8 +736,8 @@ struct SingleTrackQCMC {
}
}

template <int lepton_source_id, typename TMCParticles, typename TTrack>
void fillMuonInfo(TTrack const& track)
template <int lepton_source_id, typename TMCParticles, typename TTrack, typename TCollision>
void fillMuonInfo(TTrack const& track, TCollision const& collision)
{
auto mctrack = track.template emmcparticle_as<TMCParticles>();
float dca_xy = fwdDcaXYinSigma(track);
Expand Down Expand Up @@ -765,6 +767,8 @@ struct SingleTrackQCMC {
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hDCAxRes_Pt"), track.pt(), std::sqrt(track.cXXatDCA()) * 1e+4);
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hDCAyRes_Pt"), track.pt(), std::sqrt(track.cYYatDCA()) * 1e+4);
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hDCAxyRes_Pt"), track.pt(), sigmaFwdDcaXY(track) * 1e+4);
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hDCAx_PosZ"), collision.posZ(), track.fwdDcaX());
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hDCAy_PosZ"), collision.posZ(), track.fwdDcaY());
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hNclsMCH"), track.nClusters());
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hNclsMFT"), track.nClustersMFT());
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hPDCA"), track.rAtAbsorberEnd(), track.pDca());
Expand Down Expand Up @@ -793,6 +797,8 @@ struct SingleTrackQCMC {
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hDCAxRes_Pt"), track.pt(), std::sqrt(track.cXXatDCA()) * 1e+4);
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hDCAyRes_Pt"), track.pt(), std::sqrt(track.cYYatDCA()) * 1e+4);
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hDCAxyRes_Pt"), track.pt(), sigmaFwdDcaXY(track) * 1e+4);
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hDCAx_PosZ"), collision.posZ(), track.fwdDcaX());
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hDCAy_PosZ"), collision.posZ(), track.fwdDcaY());
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hNclsMCH"), track.nClusters());
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hNclsMFT"), track.nClustersMFT());
fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hPDCA"), track.rAtAbsorberEnd(), track.pDca());
Expand Down Expand Up @@ -881,28 +887,28 @@ struct SingleTrackQCMC {
if (mctrack.isPhysicalPrimary() || mctrack.producedByGenerator()) {
if (pdg_mother == 111 || pdg_mother == 221 || pdg_mother == 331 || pdg_mother == 113 || pdg_mother == 223 || pdg_mother == 333) {
if (IsFromCharm(mcmother, mcparticles) < 0 && IsFromBeauty(mcmother, mcparticles) < 0) {
fillTrackInfo<0, TMCParticles>(track); // PromptLF
fillTrackInfo<0, TMCParticles>(track, collision); // PromptLF
} else {
fillTrackInfo<1, TMCParticles>(track); // NonPromptLF
fillTrackInfo<1, TMCParticles>(track, collision); // NonPromptLF
}
} else if (pdg_mother == 443) {
if (IsFromBeauty(mcmother, mcparticles) > 0) { // b is found in full decay chain.
fillTrackInfo<4, TMCParticles>(track);
fillTrackInfo<4, TMCParticles>(track, collision);
} else {
fillTrackInfo<3, TMCParticles>(track);
fillTrackInfo<3, TMCParticles>(track, collision);
}
} else if (isWeakDecayFromBeautyHadron(mctrack, mcparticles)) { // hb->l is found in full decay chain.
fillTrackInfo<6, TMCParticles>(track);
fillTrackInfo<6, TMCParticles>(track, collision);
} else if (isWeakDecayFromCharmHadron(mctrack, mcparticles)) { // hc->l is found in full decay chain.
if (IsFromBeauty(mcmother, mcparticles) > 0) {
fillTrackInfo<7, TMCParticles>(track); // hb->hc->l is fond.
fillTrackInfo<7, TMCParticles>(track, collision); // hb->hc->l is fond.
} else {
fillTrackInfo<5, TMCParticles>(track); // prompt hc->l is found.
fillTrackInfo<5, TMCParticles>(track, collision); // prompt hc->l is found.
}
}
} else {
if (pdg_mother == 22) { // photon conversion
fillTrackInfo<2, TMCParticles>(track);
fillTrackInfo<2, TMCParticles>(track, collision);
}
}
} // end of track loop
Expand Down
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