diff --git a/PWGDQ/Tasks/dqEfficiency.cxx b/PWGDQ/Tasks/dqEfficiency.cxx
index ee8cd2af5c1..a75edf45b46 100644
--- a/PWGDQ/Tasks/dqEfficiency.cxx
+++ b/PWGDQ/Tasks/dqEfficiency.cxx
@@ -1349,6 +1349,7 @@ void DefineHistograms(HistogramManager* histMan, TString histClasses)
     if (classStr.Contains("MCTruthGenPair")) {
       dqhistograms::DefineHistograms(histMan, objArray->At(iclass)->GetName(), "mctruth_pair");
       histMan->AddHistogram(objArray->At(iclass)->GetName(), "Pt_Rapidity", "MC generator p_{T}, y distribution", false, 120, 0.0, 30.0, VarManager::kMCPt, 150, 2.5, 4.0, VarManager::kMCY);
+      histMan->AddHistogram(objArray->At(iclass)->GetName(), "cosTheta_Phi", "MC generator cosTheta, phi distribution", false, 40, -1.0, 1.0, VarManager::kMCCosThetaHE, 40, -3.14, 3.14, VarManager::kMCPhiHE);
       histMan->AddHistogram(objArray->At(iclass)->GetName(), "Eta", "MC generator #eta distribution", false, 200, 2.5, 4.0, VarManager::kMCEta);
       // histMan->AddHistogram(objArray->At(iclass)->GetName(), "Rapidity", "MC generator y distribution", false, 150, 2.5, 4.0, VarManager::kMCY);
       histMan->AddHistogram(objArray->At(iclass)->GetName(), "Phi", "MC generator #varphi distribution", false, 50, 0.0, 2. * TMath::Pi(), VarManager::kMCPhi);
@@ -1356,6 +1357,7 @@ void DefineHistograms(HistogramManager* histMan, TString histClasses)
     if (classStr.Contains("MCTruthGen")) {
       dqhistograms::DefineHistograms(histMan, objArray->At(iclass)->GetName(), "mctruth");
       histMan->AddHistogram(objArray->At(iclass)->GetName(), "Pt_Rapidity", "MC generator p_{T}, y distribution", false, 120, 0.0, 30.0, VarManager::kMCPt, 150, 2.5, 4.0, VarManager::kMCY);
+      histMan->AddHistogram(objArray->At(iclass)->GetName(), "cosTheta_Phi", "MC generator cosTheta, phi distribution", false, 40, -1.0, 1.0, VarManager::kMCCosThetaHE, 40, -3.14, 3.14, VarManager::kMCPhiHE);
       histMan->AddHistogram(objArray->At(iclass)->GetName(), "Eta", "MC generator #eta distribution", false, 200, 2.5, 4.0, VarManager::kMCEta);
       // histMan->AddHistogram(objArray->At(iclass)->GetName(), "Rapidity", "MC generator y distribution", false, 150, 2.5, 4.0, VarManager::kMCY);
       histMan->AddHistogram(objArray->At(iclass)->GetName(), "Phi", "MC generator #varphi distribution", false, 50, 0.0, 2. * TMath::Pi(), VarManager::kMCPhi);