SoftDropObservablesTool.cxx

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/*
  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
*/
 
#include "JetSubStructureMomentTools/SoftDropObservablesTool.h"
#include "JetSubStructureUtils/SoftDropObservables.h"
 
SoftDropObservablesTool::SoftDropObservablesTool(const std::string& name) : 
  JetSubStructureMomentToolsBase(name)
{
}
 
int SoftDropObservablesTool::modifyJet(xAOD::Jet &injet) const {
  fastjet::PseudoJet jet;
 
  bool decorate = SetupDecoration(jet,injet,true);
 
  // Groomed jet moments
  float zg_value = -999, rg_value = -999;
 
  //For these variables, the jet needs at least two constituents
  if (decorate && injet.numConstituents() > 1) {
    JetSubStructureUtils::SoftDropObservables zgGetter("zg");
    JetSubStructureUtils::SoftDropObservables rgGetter("rg");
 
    zg_value = zgGetter.result(jet);
    rg_value = rgGetter.result(jet);
  }
 
  // Groomed jet moments
  injet.setAttribute(m_prefix+"zg", zg_value);
  injet.setAttribute(m_prefix+"rg", rg_value);
 
 
  return 0;
}