MissingMomentum.h

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// ================================================
// MissingMomentum class description
// ================================================
//
// Namespace Atlfast::
//
// class: MissingMomentum
//
// Description: 
//
//  Store things needed by a number of algorithms

// ................................................................
//

#ifndef ATLFAST_MISSINGMOMENTUM_H
#define ATLFAST_MISSINGMOMENTUM_H

#include "GaudiKernel/DataObject.h"
static const CLID CLID_MissingMomentum = 2310;
namespace Atlfast {

  class MissingMomentum : public DataObject {
  public:
    MissingMomentum(): DataObject(), m_vec(0., 0., 0., 0), m_sumET(0){}

    MissingMomentum(const HepLorentzVector& v, const double sumET): 
      DataObject(), m_vec(v), m_sumET(sumET){}

    MissingMomentum(const MissingMomentum& m): 
      DataObject(m), m_vec(m.m_vec), m_sumET(m.m_sumET){}

    static const CLID& classID() { return CLID_MissingMomentum;}
    virtual const CLID& clID() const { return classID();}

    virtual ~MissingMomentum(){}
    
    double px() const {return m_vec.x();}
    double py() const {return m_vec.y();}
    HepLorentzVector momentum() const {return m_vec;}
    double sumET() const {return m_sumET;}
    
  private:
    HepLorentzVector m_vec;
    
    double m_sumET;
  };
   
}  //end of namespace bracket

#endif

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