Adding the kDeltaPhiPair2 histogram (#7043)

* add kDeltaPhiPair Histogram

* Adding the kDeltaPhiPair2 histogram

Author: Shunsuke-Kurita

PWGDQ/Core/HistogramsLibrary.cxx

@@ -1051,6 +1051,9 @@ void o2::aod::dqhistograms::DefineHistograms(HistogramManager* hm, const char* h
       hm->AddHistogram(histClass, "Mass_VtxZ", "", true, 30, -15.0, 15.0, VarManager::kVtxZ, 750, 0.0, 30.0, VarManager::kMass);
       hm->AddHistogram(histClass, "DeltaPhiPair", "", false, 130, -6.5, 6.5, VarManager::kDeltaPhiPair);
     }
+    if (subGroupStr.Contains("correlation-emu")) {
+      hm->AddHistogram(histClass, "DeltaPhiPair2", "", false, 600, -0.5 * TMath::Pi(), 1.5 * TMath::Pi(), VarManager::kDeltaPhiPair2);
+    }
     if (subGroupStr.Contains("dielectrons")) {
       if (subGroupStr.Contains("prefilter")) {
         hm->AddHistogram(histClass, "MassLow_OpeningAngle", "", false, 150, 0., 0.15, VarManager::kMass, 80, 0., 0.8, VarManager::kOpeningAngle);