Merge branch 'mhodgkin_fixPFlowMuonTreatment' into 'master'

Bug fix to treatment toggle of muons in eflowRec

See merge request atlas/athena!37754

Reconstruction/eflowRec/eflowRec/PFLeptonSelector.h

@@ -68,8 +68,16 @@ private:
 
   Gaudi::Property<std::string> m_electronID{this,"electronID","LHMedium","Select electron ID"};
 
+  /** Toggle to determine whether we select any electrons or not - if selected then tracks matched to those electrons
+  * in PFTrackSelector are not used in particle flow. If not selected then an empty electron container is created,
+  * and hence PFTrackSelector won't find any electrons to match its selected tracks to.
+  */
   Gaudi::Property<bool> m_selectElectrons{this,"selectElectrons",true,"Toggle usage of electron ID"};
 
-  
+  /** Toggle to determine whether we select any muons or not - if selected then tracks matched to those muons
+  * in PFTrackSelector are not used in particle flow. If not selected then an empty muon container is created,
+  * and hence PFTrackSelector won't find any muons to match its selected tracks to.
+  */
+  Gaudi::Property<bool> m_selectMuons{this,"selectMuons",true,"Toggle usage of muon ID"};
 };
 #endif

Reconstruction/eflowRec/src/PFLeptonSelector.cxx

@@ -38,9 +38,11 @@ StatusCode PFLeptonSelector::execute(){
   }
 
   /* Select  muons */
-  StatusCode sc = this->selectMuons(selectedMuonsWriteHandle,leptonCaloCellsWriteHandle);
-   //if fail to select muons issue warning, but carry on processing event
-  if (sc.isFailure()) ATH_MSG_WARNING("Problem selecting muons ");
+  if (m_selectMuons){
+    StatusCode sc = this->selectMuons(selectedMuonsWriteHandle,leptonCaloCellsWriteHandle);
+     //if fail to select muons issue warning, but carry on processing event
+    if (sc.isFailure()) ATH_MSG_WARNING("Problem selecting muons ");
+  } 
 
   return StatusCode::SUCCESS;
 }