JetSmearer.h

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// JetSmearer class
//
// Implements smearing for Jets
//
// Namespace Atlfast::
//
//--------------------------------------------------------------
//
// JetSmearer replicates the smearing code of ATLFAST++'s
// JetMaker. It provides the smear() method defined
// in the ISmearer interface. It privately inherits from
// the DefaultSmearer class to use its implementation of
// random number services etc.
//
// Authors: H.T.Phillips, P. Clarke, E. Richter-Was, P. Sherwood, R. Steward
//

#ifndef ATLFAST_JETSMEARER_H
#define ATLFAST_JETSMEARER_H

#ifndef ATLFAST_ISMEARER_H
#include "AtlfastAlgs/ISmearer.h"
#endif

#ifndef ATLFAST_DEFAULTSMEARER_H
#include "AtlfastAlgs/DefaultSmearer.h"
#endif

#include "CLHEP/Vector/LorentzVector.h"

namespace Atlfast {

  class JetSmearer : virtual public ISmearer, 
                     virtual private DefaultSmearer 
    {
    public:
      //--------------------------------------------------------------------------
      // constructors and destructors- we can leave everything to DefaultSmearer
      //--------------------------------------------------------------------------
      JetSmearer(const int aseed, 
                 const int lumi, 
                 const double rconeb, 
                 const double rconef, 
                 const double barrelForwardEta) : 
        ISmearer(), 
        DefaultSmearer(aseed), 
        m_lumi(lumi), 
        m_rconeb(rconeb),
        m_rconef(rconef), 
        m_BarrelForwardEta(barrelForwardEta) 
        { }
      
      virtual ~JetSmearer() { }
      
      //--------------------------------------------------------------------------
      // the only thing we actually need to provide is the smear() method
      //--------------------------------------------------------------------------
      virtual HepLorentzVector smear(const HepMC::GenParticle&);
      virtual HepLorentzVector smear(const HepLorentzVector& avec);

      virtual int setSmearParameters( const std::vector<double>& smearValues );
      virtual int setSmearParamSchema( const int smearSchema );
      
    private:
      int m_lumi;
      double m_rconeb;           
      double m_rconef;           
      double m_BarrelForwardEta; 
    };

} // end of namespace bracket

#endif

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