first commit

Author: Aimeric Landou

PWGJE/Tasks/trackEfficiency.cxx

@@ -84,6 +84,15 @@ struct TrackEfficiency {
   Configurable<bool> getPtHatFromHepMCXSection{"getPtHatFromHepMCXSection", true, "test configurable, configurable should be removed once well tested"};
   Configurable<bool> useTrueTrackWeight{"useTrueTrackWeight", true, "test configurable, should be set to 1 then config removed once well tested"};
 
+  // systematics variation
+  Configurable<float> effSystMinNCrossedRowsTPC{"effSystMinNCrossedRowsTPC", 70, "min number of crossed rows TPC"};
+  Configurable<float> effSystMinNCrossedRowsOverFindableClustersTPC{"effSystMinNCrossedRowsOverFindableClustersTPC", 0.8, "min ratio of crossed rows over findable clusters TPC"};
+  Configurable<float> effSystMaxChi2PerClusterTPC{"effSystMaxChi2PerClusterTPC", 4.0, "max chi2 per cluster TPC"};
+  Configurable<float> effSystMaxChi2PerClusterITS{"effSystMaxChi2PerClusterITS", 36.0, "max chi2 per cluster ITS	"};
+  Configurable<float> effSystMaxDcaZ{"effSystMaxDcaZ", 2.0, "max DCA to vertex z"};
+  Configurable<float> effSystMaxDcaXY{"effSystMaxDcaXY", 0.0105 * 0.035 / pT^1.1 ????, "max DCA to vertex xy"};
+  Configurable<float> effSystMinNrequiredHits{"effSystMinNrequiredHits", ???, "cluster requirement ITS"}; at least 1 among 3 innermost layers
+
   std::vector<int> eventSelectionBits;
   int trackSelection = -1;
 
@@ -1014,7 +1023,11 @@ struct TrackEfficiency {
     registry.fill(HIST("h_mccollisions"), 2.5);
     registry.fill(HIST("h_mccollisions_weighted"), 2.5, eventWeight);
   }
-  PROCESS_SWITCH(TrackEfficiency, processMcCollisionsWeighted, "QA for McCollisions in weighted MC", false);
+
+  void processSystematicsVariation() {
+    do stuff, recreate global tracks
+  }
+  PROCESS_SWITCH(TrackEfficiency, processSystematicsVariation, "systematics variation", false);
 };
 
 WorkflowSpec defineDataProcessing(ConfigContext const& cfgc)