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Merged
shouqiye merged 3 commits into from
Jun 6, 2025
Merged

[PWGCF] Update PiDeuteronFemto.cxx #11496

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d3fb7ed
Update PiDeuteronFemto.cxx
blacwovie Jun 6, 2025
fa34a60
Please consider the following formatting changes
alibuild Jun 6, 2025
53ba055
Merge pull request #15 from alibuild/alibot-cleanup-11496
blacwovie Jun 6, 2025
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149 changes: 121 additions & 28 deletions PWGCF/Femto/TableProducer/PiDeuteronFemto.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -18,12 +18,12 @@
#include <TH1F.h>
#include <TDirectory.h>
#include <THn.h>
#include <TLorentzVector.h>

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[root/lorentz-vector] 

Do not use the TLorentzVector legacy class. Use std::array with RecoDecay methods or the ROOT::Math::LorentzVector template instead.
#include <TMath.h>
#include <TObjArray.h>
#include <TFile.h>
#include <TH2F.h>
#include <TLorentzVector.h>

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[root/lorentz-vector] 

Do not use the TLorentzVector legacy class. Use std::array with RecoDecay methods or the ROOT::Math::LorentzVector template instead.

#include <cmath>
#include <string>
Expand Down Expand Up @@ -152,8 +152,6 @@
Configurable<float> settingCutVertex{"settingCutVertex", 10.0f, "Accepted z-vertex range"};
Configurable<float> settingCutPinMinDe{"settingCutPinMinDe", 0.0f, "Minimum Pin for De"};
Configurable<float> settingCutEta{"settingCutEta", 0.8f, "Eta cut on daughter track"};
Configurable<float> settingCutDCAxy{"settingCutDCAxy", 2.0f, "DCAxy range for tracks"};
Configurable<float> settingCutDCAz{"settingCutDCAz", 2.0f, "DCAz range for tracks"};
Configurable<float> settingCutChi2tpcLow{"settingCutChi2tpcLow", 0.0f, "Low cut on TPC chi2"};
Configurable<float> settingCutChi2tpcHigh{"settingCutChi2tpcHigh", 999.f, "High cut on TPC chi2"};
Configurable<float> settingCutInvMass{"settingCutInvMass", 0.0f, "Invariant mass upper limit"};
Expand All @@ -170,6 +168,18 @@
Configurable<float> settingCutNsigmaTOFTPCPi{"settingCutNsigmaTOFTPCPi", 3.0f, "Value of the Pion TOF TPC Nsigma cut"};
Configurable<int> settingNoMixedEvents{"settingNoMixedEvents", 5, "Number of mixed events per event"};
Configurable<bool> settingEnableBkgUS{"settingEnableBkgUS", false, "Enable US background"};

Configurable<bool> settingFillTable{"settingFillTable", false, "Enable table filling"};
Configurable<float> settingCutPiptMin{"settingCutPiptMin", 0.14f, "Minimum PT cut on Pi"};
Configurable<float> settingCutPiptMax{"settingCutPiptMax", 4.0f, "Maximum PT cut on Pi"};
Configurable<float> settingCutDeptMin{"settingCutDeptMin", 0.6f, "Minimum PT cut on De"};
Configurable<float> settingCutDeptMax{"settingCutDeptMax", 1.6f, "Maximum PT cut on De"};
Configurable<float> settingCutPiDCAxyMin{"settingCutPiDCAxyMin", 0.3f, "DCAxy Min for Pi"};
Configurable<float> settingCutPiDCAzMin{"settingCutPiDCAzMin", 0.3f, "DCAz Min for Pi"};
Configurable<float> settingCutDeDCAzMin{"settingCutDeDCAzMin", 0.2f, "DCAxy Min for De"};
Configurable<float> settingCutNsigTPCPrMin{"settingCutNsigTPCPrMin", 3.0f, "Minimum TPC Pr Nsigma cut on Pi"};
Configurable<float> settingCutNsigTOFPrMin{"settingCutNsigTOFPrMin", 3.0f, "Minimum TOF Pr Nsigma cut on Pi"};

Configurable<bool> settingSaveUSandLS{"settingSaveUSandLS", true, "Save All Pairs"};
Configurable<bool> settingFillMultiplicity{"settingFillMultiplicity", false, "Fill multiplicity table"};

Expand Down Expand Up @@ -214,30 +224,33 @@

HistogramRegistry mQaRegistry{
"QA",
{
{"hVtxZ", "Vertex distribution in Z;Z (cm)", {HistType::kTH1F, {{400, -20.0, 20.0}}}},
{"hNcontributor", "Number of primary vertex contributor", {HistType::kTH1F, {{2000, 0.0f, 2000.0f}}}},
{"hTrackSel", "Accepted tracks", {HistType::kTH1F, {{Selections::kAll, -0.5, static_cast<double>(Selections::kAll) - 0.5}}}},
{"hEvents", "; Events;", {HistType::kTH1F, {{3, -0.5, 2.5}}}},
{"hEmptyPool", "svPoolCreator did not find track pairs false/true", {HistType::kTH1F, {{2, -0.5, 1.5}}}},
{"hdcaxyDe", ";DCA_{xy} (cm)", {HistType::kTH1F, {{200, -1.0f, 1.0f}}}},
{"hdcazDe", ";DCA_{z} (cm)", {HistType::kTH1F, {{200, -1.0f, 1.0f}}}},
{"hNClsDeITS", ";N_{ITS} Cluster", {HistType::kTH1F, {{20, -10.0f, 10.0f}}}},
{"hNClsPiITS", ";N_{ITS} Cluster", {HistType::kTH1F, {{20, -10.0f, 10.0f}}}},
{"hDePitInvMass", "; M(De + p) (GeV/#it{c}^{2})", {HistType::kTH1F, {{300, 3.74f, 4.34f}}}},
{"hDePt", "#it{p}_{T} distribution; #it{p}_{T} (GeV/#it{c})", {HistType::kTH1F, {{240, -6.0f, 6.0f}}}},
{"hPiPt", "Pt distribution; #it{p}_{T} (GeV/#it{c})", {HistType::kTH1F, {{120, -3.0f, 3.0f}}}},
{"h2dEdxDecandidates", "dEdx distribution; #it{p} (GeV/#it{c}); dE/dx (a.u.)", {HistType::kTH2F, {{200, -5.0f, 5.0f}, {100, 0.0f, 2000.0f}}}},
{"h2NsigmaDeTPC", "NsigmaDe TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(De)", {HistType::kTH2F, {{20, -5.0f, 5.0f}, {200, -5.0f, 5.0f}}}},
{"h2NsigmaDeTPC_preselection", "NsigmaDe TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(De)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"h2NsigmaDeTPC_preselecComp", "NsigmaDe TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(De)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"h2NSigmaDeITS_preselection", "NsigmaDe ITS distribution; signed #it{p}_{T} (GeV/#it{c}); n#sigma_{ITS} De", {HistType::kTH2F, {{50, -5.0f, 5.0f}, {120, -3.0f, 3.0f}}}},
{"h2NSigmaDeITS", "NsigmaDe ITS distribution; signed #it{p}_{T} (GeV/#it{c}); n#sigma_{ITS} De", {HistType::kTH2F, {{50, -5.0f, 5.0f}, {120, -3.0f, 3.0f}}}},
{"h2NsigmaPiTPC", "NsigmaPi TPC distribution; #it{p}_{T}(GeV/#it{c}); n#sigma_{TPC}(p)", {HistType::kTH2F, {{20, -5.0f, 5.0f}, {200, -5.0f, 5.0f}}}},
{"h2NsigmaPiTPC_preselection", "NsigmaDe TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(De)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"h2NsigmaPiTOF", "NsigmaPi TOF distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TOF}(p)", {HistType::kTH2F, {{20, -5.0f, 5.0f}, {200, -5.0f, 5.0f}}}},
{"h2NsigmaPiTOF_preselection", "NsigmaPi TOF distribution; #iit{p}_{T} (GeV/#it{c}); n#sigma_{TOF}(p)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
},
{{"hVtxZ", "Vertex distribution in Z;Z (cm)", {HistType::kTH1F, {{400, -20.0, 20.0}}}},
{"hNcontributor", "Number of primary vertex contributor", {HistType::kTH1F, {{2000, 0.0f, 2000.0f}}}},
{"hTrackSel", "Accepted tracks", {HistType::kTH1F, {{Selections::kAll, -0.5, static_cast<double>(Selections::kAll) - 0.5}}}},
{"hEvents", "; Events;", {HistType::kTH1F, {{3, -0.5, 2.5}}}},
{"hEmptyPool", "svPoolCreator did not find track pairs false/true", {HistType::kTH1F, {{2, -0.5, 1.5}}}},
{"hdcaxyDe", ";DCA_{xy} (cm)", {HistType::kTH1F, {{200, -1.0f, 1.0f}}}},
{"hdcazDe", ";DCA_{z} (cm)", {HistType::kTH1F, {{200, -1.0f, 1.0f}}}},
{"hNClsDeITS", ";N_{ITS} Cluster", {HistType::kTH1F, {{20, -10.0f, 10.0f}}}},
{"hNClsPiITS", ";N_{ITS} Cluster", {HistType::kTH1F, {{20, -10.0f, 10.0f}}}},
{"hDePitInvMass", "; M(De + p) (GeV/#it{c}^{2})", {HistType::kTH1F, {{300, 3.74f, 4.34f}}}},
{"hDePt", "#it{p}_{T} distribution; #it{p}_{T} (GeV/#it{c})", {HistType::kTH1F, {{240, -6.0f, 6.0f}}}},
{"hPiPt", "Pt distribution; #it{p}_{T} (GeV/#it{c})", {HistType::kTH1F, {{120, -3.0f, 3.0f}}}},
{"h2dEdxDecandidates", "dEdx distribution; #it{p} (GeV/#it{c}); dE/dx (a.u.)", {HistType::kTH2F, {{200, -5.0f, 5.0f}, {100, 0.0f, 2000.0f}}}},
{"h2NsigmaDeTPC", "NsigmaDe TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(De)", {HistType::kTH2F, {{20, -5.0f, 5.0f}, {200, -5.0f, 5.0f}}}},
{"h2NsigmaDeTPC_preselection", "NsigmaDe TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(De)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"h2NsigmaDeTPC_preselecComp", "NsigmaDe TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(De)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"h2NSigmaDeITS_preselection", "NsigmaDe ITS distribution; signed #it{p}_{T} (GeV/#it{c}); n#sigma_{ITS} De", {HistType::kTH2F, {{50, -5.0f, 5.0f}, {120, -3.0f, 3.0f}}}},
{"h2NSigmaDeITS", "NsigmaDe ITS distribution; signed #it{p}_{T} (GeV/#it{c}); n#sigma_{ITS} De", {HistType::kTH2F, {{50, -5.0f, 5.0f}, {120, -3.0f, 3.0f}}}},
{"h2NsigmaPiTPC", "NsigmaPi TPC distribution; #it{p}_{T}(GeV/#it{c}); n#sigma_{TPC}(p)", {HistType::kTH2F, {{20, -5.0f, 5.0f}, {200, -5.0f, 5.0f}}}},
{"h2NsigmaPiTPC_preselection", "NsigmaDe TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(De)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"h2NsigmaPiTOF", "NsigmaPi TOF distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TOF}(p)", {HistType::kTH2F, {{20, -5.0f, 5.0f}, {200, -5.0f, 5.0f}}}},
{"h2NsigmaPiTOF_preselection", "NsigmaPi TOF distribution; #iit{p}_{T} (GeV/#it{c}); n#sigma_{TOF}(p)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"hkStar_LS_M", ";kStar (GeV/c)", {HistType::kTH1F, {{300, 0.0f, 3.0f}}}},
{"hkStar_LS_A", ";kStar (GeV/c)", {HistType::kTH1F, {{300, 0.0f, 3.0f}}}},
{"hkStar_US_M", ";kStar (GeV/c)", {HistType::kTH1F, {{300, 0.0f, 3.0f}}}},
{"hkStar_US_A", ";kStar (GeV/c)", {HistType::kTH1F, {{300, 0.0f, 3.0f}}}},
{"hisBkgEM", "; isBkgEM;", {HistType::kTH1F, {{3, -1, 2}}}}},
OutputObjHandlingPolicy::AnalysisObject,
false,
true};
Expand Down Expand Up @@ -683,6 +696,81 @@
mQaRegistry.fill(HIST("hdcazDe"), piDecand.dcazDe);
mQaRegistry.fill(HIST("hNClsDeITS"), piDecand.nClsItsDe);
mQaRegistry.fill(HIST("hNClsPiITS"), piDecand.nClsItsPi);
mQaRegistry.fill(HIST("hisBkgEM"), piDecand.isBkgEM);
}

double computePrTPCnsig(double InnerParamTPCHad, double SignalTPCHad)
{
double m_BBparamsProton[6] = {-54.42066571222577, 0.2857381250239097, 1.247140602468868, 0.6297483918147729, 2.985438833884555, 0.09};

float TPCinnerParam = InnerParamTPCHad;
float expTPCSignal = o2::tpc::BetheBlochAleph((TPCinnerParam / 0.9382721), m_BBparamsProton[0], m_BBparamsProton[1], m_BBparamsProton[2], m_BBparamsProton[3], m_BBparamsProton[4]);
double resoTPC{expTPCSignal * m_BBparamsProton[5]};
return ((SignalTPCHad - expTPCSignal) / resoTPC);
}

double tofNSigmaCalculation(double MassTOFHad, double ptHad)
{
double fExpTOFMassHad = 0.9487; // Proton mass in TOF
const float kp0 = 1.22204e-02;
const float kp1 = 7.48467e-01;

double fSigmaTOFMassHad = (kp0 * TMath::Exp(kp1 * TMath::Abs(ptHad))) * fExpTOFMassHad;

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double fNSigmaTOFHad = (MassTOFHad - fExpTOFMassHad) / fSigmaTOFMassHad;
return fNSigmaTOFHad;
}

double computeKstar(const PiDecandidate& piDecand)
{
TLorentzVector he3, hadron;
float massHe3 = 2.80839;
float massHad = 0.1395704;
he3.SetPtEtaPhiM(abs(piDecand.recoPtDe()), piDecand.recoEtaDe(), piDecand.recoPhiDe(), massHe3);

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hadron.SetPtEtaPhiM(abs(piDecand.recoPtPi()), piDecand.recoEtaPi(), piDecand.recoPhiPi(), massHad);

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TLorentzVector p_total_lab = he3 + hadron;
TVector3 v_cm = p_total_lab.BoostVector();
TLorentzVector p1_cm = he3;
TLorentzVector p2_cm = hadron;
p1_cm.Boost(-v_cm);
p2_cm.Boost(-v_cm);
TLorentzVector p_diff_cm = p1_cm - p2_cm;
double kStar = sqrt(p_diff_cm.X() * p_diff_cm.X() + p_diff_cm.Y() * p_diff_cm.Y() + p_diff_cm.Z() * p_diff_cm.Z());

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return kStar / 2.0;
}

void fillKstar(const PiDecandidate& piDecand)
{
double PrTPCnsigma = computePrTPCnsig(piDecand.momPiTPC, piDecand.tpcSignalPi);
double PrTOFnsigma = tofNSigmaCalculation(piDecand.massTOFPi, piDecand.recoPtPi());
if (abs(PrTPCnsigma) < settingCutNsigTPCPrMin)

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return;
if (abs(PrTOFnsigma) < settingCutNsigTOFPrMin)

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return;
float DeDCAxyMin = 0.015 + 0.0305 / TMath::Power(piDecand.recoPtDe(), 1.1);

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[root/entity] 

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if (abs(piDecand.dcaxyDe) > DeDCAxyMin || abs(piDecand.dcazDe) > settingCutDeDCAzMin || abs(piDecand.dcaxyPi) > settingCutPiDCAxyMin || abs(piDecand.dcazPi) > settingCutPiDCAzMin)

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return;
if (std::abs(piDecand.recoPtPi()) < settingCutPiptMin || std::abs(piDecand.recoPtPi()) > settingCutPiptMax)
return;
if (std::abs(piDecand.recoPtDe()) < settingCutDeptMin || std::abs(piDecand.recoPtDe()) > settingCutDeptMax)
return;

fillHistograms(piDecand);

double kstar = computeKstar(piDecand);
if (piDecand.isBkgUS == 0) {
if (piDecand.recoPtDe() > 0) {
mQaRegistry.fill(HIST("hkStar_LS_M"), kstar);
} else {
mQaRegistry.fill(HIST("hkStar_LS_A"), kstar);
}
} else {
if (piDecand.recoPtDe() > 0) {
mQaRegistry.fill(HIST("hkStar_US_M"), kstar);
} else {
mQaRegistry.fill(HIST("hkStar_US_A"), kstar);
}
}
}

// ==================================================================================================================
Expand All @@ -700,9 +788,14 @@
if (!fillCandidateInfo(deTrack, piTrack, collBracket, collisions, piDecand, tracks, isMixedEvent)) {
continue;
}
fillHistograms(piDecand);

fillKstar(piDecand);

auto collision = collisions.rawIteratorAt(piDecand.collisionID);
fillTable(piDecand, collision);

if (settingFillTable) {
fillTable(piDecand, collision);
}
}
}

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