Added a new process in dqFlow to also calculate sum of squared amplituted of FT0C. Edited the VarManager to use this value to calculate M11REF for flow calculation using cumulant method at midrapidity

Author: Ankur Yadav

PWGDQ/Core/VarManager.h

@@ -486,11 +486,10 @@ class VarManager : public TObject
     kV2ME_EP,
     kWV2ME_SP,
     kWV2ME_EP,
-    kTwoR2SP1,       // Scalar product resolution of event1 for ME technique
-    kTwoR2SP2,       // Scalar product resolution of event2 for ME technique
-    kTwoR2EP1,       // Event plane resolution of event2 for ME technique
-    kTwoR2EP2,       // Event plane resolution of event2 for ME technique
-    kNPairsPerEvent, // number of pairs per event in same-event or mixed-event pairing
+    kTwoR2SP1, // Scalar product resolution of event1 for ME technique
+    kTwoR2SP2, // Scalar product resolution of event2 for ME technique
+    kTwoR2EP1, // Event plane resolution of event2 for ME technique
+    kTwoR2EP2, // Event plane resolution of event2 for ME technique
 
     // Variables for event mixing with cumulant
     kV22m,
@@ -1373,7 +1372,7 @@ class VarManager : public TObject
   template <typename T1, typename T2, typename T3>
   static void FillEnergyCorrelatorTriple(T1 const& lepton1, T2 const& lepton2, T3 const& hadron, float* values = nullptr, float Translow = 1. / 3, float Transhigh = 2. / 3, bool applyFitMass = false, float sidebandMass = 0.0f);
   template <int pairType, typename T1, typename T2, typename T3, typename T4, typename T5>
-  static void FillEnergyCorrelatorsUnfoldingTriple(T1 const& lepton1, T2 const& lepton2, T3 const& hadron, T4 const& track, T5 const& t1, float* values = nullptr, bool applyFitMass = false);
+  static void FillEnergyCorrelatorsUnfoldingTriple(T1 const& lepton1, T2 const& lepton2, T3 const& hadron, T4 const& track, T5 const& t1, float* values = nullptr);
   template <typename T1, typename T2>
   static void FillDileptonPhoton(T1 const& dilepton, T2 const& photon, float* values = nullptr);
   template <typename T>
@@ -5901,7 +5900,7 @@ void VarManager::FillEnergyCorrelatorTriple(T1 const& lepton1, T2 const& lepton2
 }
 
 template <int pairType, typename T1, typename T2, typename T3, typename T4, typename T5>
-void VarManager::FillEnergyCorrelatorsUnfoldingTriple(T1 const& lepton1, T2 const& lepton2, T3 const& hadron, T4 const& track, T5 const& t1, float* values, bool applyFitMass)
+void VarManager::FillEnergyCorrelatorsUnfoldingTriple(T1 const& lepton1, T2 const& lepton2, T3 const& hadron, T4 const& track, T5 const& t1, float* values)
 {
   if (fgUsedVars[kMCCosChi_gen] || fgUsedVars[kMCWeight_gen] || fgUsedVars[kMCdeltaeta_gen] || fgUsedVars[kMCCosChi_rec] || fgUsedVars[kMCWeight_rec] || fgUsedVars[kMCdeltaeta_rec]) {
     // energy correlators
@@ -5913,11 +5912,6 @@ void VarManager::FillEnergyCorrelatorsUnfoldingTriple(T1 const& lepton1, T2 cons
     ROOT::Math::PtEtaPhiMVector v_lepton2(lepton2.pt(), lepton2.eta(), lepton2.phi(), m2);
     ROOT::Math::PtEtaPhiMVector dilepton = v_lepton1 + v_lepton2;
 
-    float dileptonmass = o2::constants::physics::MassJPsi;
-    if (applyFitMass) {
-      dileptonmass = dilepton.mass();
-    }
-
     float MassHadron;
     if constexpr (pairType == kJpsiHadronMass) {
       MassHadron = TMath::Sqrt(t1.e() * t1.e() - t1.p() * t1.p());
@@ -5933,7 +5927,7 @@ void VarManager::FillEnergyCorrelatorsUnfoldingTriple(T1 const& lepton1, T2 cons
     values[kMCWeight_gen] = E_boost_gen / o2::constants::physics::MassJPsi;
     values[kMCdeltaeta_gen] = track.eta() - t1.eta();
 
-    ROOT::Math::PtEtaPhiMVector v1_rec(dilepton.pt(), dilepton.eta(), dilepton.phi(), dileptonmass);
+    ROOT::Math::PtEtaPhiMVector v1_rec(dilepton.pt(), dilepton.eta(), dilepton.phi(), dilepton.mass());
     ROOT::Math::PtEtaPhiMVector v2_rec(hadron.pt(), hadron.eta(), hadron.phi(), o2::constants::physics::MassPionCharged);
     values[kMCCosChi_rec] = LorentzTransformJpsihadroncosChi("coschi", v1_rec, v2_rec);
     float E_boost_rec = LorentzTransformJpsihadroncosChi("weight_boost", v1_rec, v2_rec);