[PWGEM] PM: Change conversion tagging task to produce derived data

- Change conversion tagging task to produce derived data instead of plain TTree, since the tree grows too large and jobs would fail. Also tried to reduce stored information, by either smaller data format or recalculating values on the fly.

Author: mhemmer-cern

PWGEM/PhotonMeson/DataModel/ConversionMl.h

@@ -0,0 +1,53 @@
+// 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 ConversionMl.h
+/// \brief This header provides the table definitions to store cluster pairs to analyze and potentially tag late conversions
+/// \author Marvin Hemmer (marvin.hemmer@cern.ch) - Goethe University Frankfurt
+
+#ifndef PWGEM_PHOTONMESON_DATAMODEL_CONVERSIONML_H_
+#define PWGEM_PHOTONMESON_DATAMODEL_CONVERSIONML_H_
+
+#include <Framework/AnalysisDataModel.h>
+
+#include <cstdint>
+
+namespace o2::aod
+{
+
+namespace convtag
+{
+DECLARE_SOA_COLUMN(PMEvent, pmevent, int);          //! index column to the pmevent
+DECLARE_SOA_COLUMN(Minv, minv, float);              //! invariant mass of the pair
+DECLARE_SOA_COLUMN(HarmonicET, harmonicET, float);  //! ET1 * ET2 / (ET1 + ET2) in GeV
+DECLARE_SOA_COLUMN(DeltaEta, deltaEta, float);      //! difference in eta of the two clusters
+DECLARE_SOA_COLUMN(DeltaPhi, deltaPhi, float);      //! difference in phi of the two clusters in rad
+DECLARE_SOA_COLUMN(Phiv, phiv, float);              //! angle between plane spanned by the two clusters and the plane between the B-field direction the their combined momentum
+DECLARE_SOA_COLUMN(E1, e1, float);                  //! energy of first cluster in GeV
+DECLARE_SOA_COLUMN(E2, e2, float);                  //! energy of second cluster in GeV
+DECLARE_SOA_COLUMN(M021, m021, float);              //! M02 of first cluster
+DECLARE_SOA_COLUMN(M022, m022, float);              //! M02 of second cluster
+DECLARE_SOA_COLUMN(Time1, time1, float);            //! time of first cluster in ns
+DECLARE_SOA_COLUMN(Time2, time2, float);            //! time of second cluster in ns
+DECLARE_SOA_COLUMN(NCells1, nCells1, uint8_t);      //! NCells of first cluster
+DECLARE_SOA_COLUMN(NCells2, nCells2, uint8_t);      //! NCells of second cluster
+DECLARE_SOA_COLUMN(TruthLabel, truthLabel, int8_t); //! truth label for ML training (0 == conversion, 1 == from Pi0, 2 == background)
+DECLARE_SOA_COLUMN(CentOrMult, centOrMult, float);  //! centrality or multiplicity value of the collision
+} // namespace convtag
+DECLARE_SOA_TABLE(ConvTagCandidates, "AOD", "CONVTAGCAND",
+                  convtag::PMEvent,
+                  convtag::Minv, convtag::HarmonicET, convtag::DeltaEta, convtag::DeltaPhi, convtag::Phiv,
+                  convtag::E1, convtag::E2, convtag::M021, convtag::M022,
+                  convtag::Time1, convtag::Time2, convtag::NCells1, convtag::NCells2,
+                  convtag::TruthLabel, convtag::CentOrMult);
+} // namespace o2::aod
+
+#endif // PWGEM_PHOTONMESON_DATAMODEL_CONVERSIONML_H_