Header for correlated bkgs

Author: Marcellocosti

PWGHF/Core/CorrelatedBkgs.h

@@ -0,0 +1,74 @@
+// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
+// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
+// All rights not expressly granted are reserved.
+//
+// This software is distributed under the terms of the GNU General Public
+// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
+//
+// In applying this license CERN does not waive the privileges and immunities
+// granted to it by virtue of its status as an Intergovernmental Organization
+// or submit itself to any jurisdiction.
+
+/// \file CorrelatedBkgTagger.h
+/// \brief Definitions of channels for correlated bkgs
+/// \author Marcello Di Costanzo <marcello.di.costanzo@cern.ch>, Polytechnic of Turin and INFN
+
+#ifndef PWGHF_CORE_CORRELATEDBKGTAGGER_H_
+#define PWGHF_CORE_CORRELATEDBKGTAGGER_H_
+
+namespace o2::hf_corrbkg
+{
+
+    // D± → K± K∓ π±
+    enum DecayChannelResoDplus {
+        PhiPi = 0,
+        K0starK,
+        // K01430K,
+        // RhoPi,
+        // f2_1270Pi
+    };
+
+    // Ds± → K± K∓ π±
+    enum DecayChannelResoDs {
+        PhiPi = DecayChannelResoDplus::PhiPi,
+        K0starK,
+        // PhiRho,
+        // f2_1270Pi,
+        // K0starPi,
+        // RhoK,
+        // EtaPi
+    };
+
+    // enum DecayChannelResoD0 {
+    //     PhiPi = DecayChannelResoDs::PhiPi,
+    //     K0starPi,
+    //     RhoK,
+    //     K0starPi0,
+    //     K0starPi,
+    //     RhoPi,
+    // };
+
+    // enum DecayChannelResoLc {
+    //     K0starP = DecayChannelResoD0::PhiPi,
+    //     DeltaK,
+    //     Lambda1520K,
+    //     PhiP,
+    // };
+
+    // enum DecayChannelResoXic {
+    //     K0starP = DecayChannelResoLc::K0starP,
+    //     PhiP,
+    // };
+
+    // Function to associate vectors with enum values
+    std::vector<int> getFinalDaughters(DecayType finalState) {
+        switch(finalState) {
+            case DecayChannelCorrBkg::DstarToPiKPiBkg:
+                return std::array{+kPiPlus, +kPiPlus, -kKPlus};
+            default:
+                return std::array{};
+        }
+    }
+} // namespace o2::hf_corrbkg
+
+#endif // PWGHF_CORE_CORRELATEDBKGTAGGER_H_