[PWGLF] add histos for shift correction (#12775)

Co-authored-by: Chiara De Martin <chdemart@alicecerno2.cern.ch>
Co-authored-by: ALICE Action Bot <alibuild@cern.ch>

Author: 3 people

PWGLF/TableProducer/Strangeness/cascadeflow.cxx

@@ -174,6 +174,7 @@ struct cascadeFlow {
   Configurable<bool> cfgShiftCorr{"cfgShiftCorr", 0, ""};
   Configurable<std::string> cfgShiftPath{"cfgShiftPath", "Users/j/junlee/Qvector/QvecCalib/Shift", "Path for Shift"};
   Configurable<int> cfgnMods{"cfgnMods", 1, "The number of modulations of interest starting from 2"};
+  //  Configurable<float> cfgHarmonic{"cfgHarmonic", 2, "Harmonic for event plane calculation"};
 
   // THN axes
   ConfigurableAxis thnConfigAxisFT0C{"thnConfigAxisFT0C", {8, 0, 80}, "FT0C centrality (%)"};
@@ -703,6 +704,8 @@ struct cascadeFlow {
     float maxMass[2]{1.36, 1.73};
     float minMassLambda[2]{1.09, 1.09};
     float maxMassLambda[2]{1.14, 1.14};
+    const AxisSpec shiftAxis = {10, 0, 10, "shift"};
+    const AxisSpec basisAxis = {2, 0, 2, "basis"};
     const AxisSpec massCascAxis[2]{{static_cast<int>((maxMass[0] - minMass[0]) / 0.001f), minMass[0], maxMass[0], "#Xi candidate mass (GeV/c^{2})"},
                                    {static_cast<int>((maxMass[1] - minMass[1]) / 0.001f), minMass[1], maxMass[1], "#Omega candidate mass (GeV/c^{2})"}};
     const AxisSpec massLambdaAxis[2]{{static_cast<int>((maxMassLambda[0] - minMassLambda[0]) / 0.001f), minMassLambda[0], maxMassLambda[0], "#Lambda candidate mass (GeV/c^{2})"},
@@ -726,6 +729,10 @@ struct cascadeFlow {
     resolution.add("QVectorsT0CTPCC_Shifted", "QVectorsT0CTPCC_Shifted", HistType::kTH2F, {axisQVs, CentAxis});
     resolution.add("QVectorsTPCAC_Shifted", "QVectorsTPCAC_Shifted", HistType::kTH2F, {axisQVs, CentAxis});
 
+    histos.add("ShiftFT0C", "ShiftFT0C", kTProfile3D, {CentAxis, basisAxis, shiftAxis});
+    histos.add("ShiftTPCL", "ShiftTPCL", kTProfile3D, {CentAxis, basisAxis, shiftAxis});
+    histos.add("ShiftTPCR", "ShiftTPCR", kTProfile3D, {CentAxis, basisAxis, shiftAxis});
+
     histos.add("hNEvents", "hNEvents", {HistType::kTH1F, {{10, 0.f, 10.f}}});
     for (Int_t n = 1; n <= histos.get<TH1>(HIST("hNEvents"))->GetNbinsX(); n++) {
       histos.get<TH1>(HIST("hNEvents"))->GetXaxis()->SetBinLabel(n, hNEventsLabels[n - 1]);
@@ -1041,6 +1048,17 @@ struct cascadeFlow {
     const float psiTPCC = std::atan2(coll.qvecBNegIm(), coll.qvecBNegRe()) * 0.5f;
     float psiT0CCorr = psiT0C;
 
+    for (int ishift = 1; ishift <= 10; ishift++) {
+      histos.fill(HIST("ShiftFT0C"), coll.centFT0C(), 0.5, ishift - 0.5, std::sin(ishift * 2 * psiT0C));
+      histos.fill(HIST("ShiftFT0C"), coll.centFT0C(), 1.5, ishift - 0.5, std::cos(ishift * 2 * psiT0C));
+
+      histos.fill(HIST("ShiftTPCL"), coll.centFT0C(), 0.5, ishift - 0.5, std::sin(ishift * 2 * psiTPCA));
+      histos.fill(HIST("ShiftTPCL"), coll.centFT0C(), 1.5, ishift - 0.5, std::cos(ishift * 2 * psiTPCA));
+
+      histos.fill(HIST("ShiftTPCR"), coll.centFT0C(), 0.5, ishift - 0.5, std::sin(ishift * 2 * psiTPCC));
+      histos.fill(HIST("ShiftTPCR"), coll.centFT0C(), 1.5, ishift - 0.5, std::cos(ishift * 2 * psiTPCC));
+    }
+
     if (cfgShiftCorr) {
       currentRunNumber = coll.runNumber();
       if (currentRunNumber != lastRunNumber) {