DrellYanValidation.h

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#ifndef DRELLYANVALIDATION_H
#define DRELLYANVALIDATION_H

/*class DrellYanValidation
 *  
 *  Class to fill Event Generator dqm monitor elements; works on HepMCProduct
 *
 *
 */

// framework & common header files
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/Run.h"

#include "DataFormats/Common/interface/Handle.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/InputTag.h"

//DQM services
#include "DQMServices/Core/interface/DQMStore.h"
#include "FWCore/ServiceRegistry/interface/Service.h"
#include "DQMServices/Core/interface/MonitorElement.h"
#include "DQMServices/Core/interface/DQMEDAnalyzer.h"

#include "SimDataFormats/GeneratorProducts/interface/HepMCProduct.h"

#include "SimGeneral/HepPDTRecord/interface/ParticleDataTable.h"

#include "Validation/EventGenerator/interface/WeightManager.h"

class DrellYanValidation : public DQMEDAnalyzer{

  public:
    explicit DrellYanValidation(const edm::ParameterSet&);
    ~DrellYanValidation() override;

        void bookHistograms(DQMStore::IBooker &i, edm::Run const &, edm::EventSetup const &) override;
        void dqmBeginRun(const edm::Run& r, const edm::EventSetup& c) override;
        void analyze(edm::Event const&, edm::EventSetup const&) override;

  private:
    WeightManager wmanager_;
    edm::InputTag hepmcCollection_;

  edm::ESHandle<HepPDT::ParticleDataTable> fPDGTable ;
  
  MonitorElement *nEvt;  
  MonitorElement *Zmass, *ZmassPeak, *Zpt, *ZptLog, *Zrap, *Zdaughters;
  MonitorElement *dilep_mass, *dilep_massPeak, *dilep_pt, *dilep_ptLog, *dilep_rap;
  MonitorElement *leadpt, *secpt, *leadeta, *seceta;
  MonitorElement *gamma_energy, *cos_theta_gamma_lepton; 

  int _flavor;
  std::string _name;

  edm::EDGetTokenT<edm::HepMCProduct> hepmcCollectionToken_;

};

#endif