Adding histograms for Drell-Yan studies

Author: Sahil Upadhyaya

PWGDQ/Core/HistogramsLibrary.cxx

@@ -1966,6 +1966,13 @@ void o2::aod::dqhistograms::DefineHistograms(HistogramManager* hm, const char* h
     hm->AddHistogram(histClass, "Mass_Pt", "", false, 500, 0.0, 5.0, VarManager::kMassDau, 200, 0.0, 20.0, VarManager::kPt);
     hm->AddHistogram(histClass, "Rapidity", "", false, 400, -4.0, 4.0, VarManager::kRap);
   }
+
+  if (subGroupStr.Contains("DY-dimuon")) {
+    hm->AddHistogram(histClass, "DY_mass", "", false, 5000, 0.0, 50.0, VarManager::kMass); // 10 MeV mass res
+    hm->AddHistogram(histClass, "DY_pT", "", false, 2000, 0.0, 100.0, VarManager::kPt); // 50 MeV pT res
+    hm->AddHistogram(histClass, "DY_y", "", false, 20, 2.0, 4.0, VarManager::kRap);
+    hm->AddHistogram(histClass, "DY_phi", "", false, 180, constants::math::PI, 2 * constants::math::PI, VarManager::kPhi);
+  }
 }
 
 //__________________________________________________________________