EmcBhabha.h

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//--------------------------------------------------------------------------
// Environment:
//      This software was developed for the BESIII collaboration.  If you
//      use all or part of it, please give an appropriate acknowledgement.
//
// Author List:
//     ChunXiu Liu     IHEP
//
//------------------------------------------------------------------------
 
#ifndef EMCBHABHA_H
#define EMCBHABHA_H
#include "EmcBhaCalib/EmcShDigi.h"
#include "EmcBhaCalib/EmcShower.h"
#include <iostream>
using namespace std;
 
//      ---------------------
//      -- Class Interface --
//      ---------------------
 
/**
 *  This class holds the information of one Bhabha particle like.
 *  the energy, the shower  ...
 *  It is filled in SelectBhabha and read out in CollectBhabha
 *  to fill the calibration matrix and vector.
 */
 
class EmcBhabha 
{
 public:
 
  // Constructors
  EmcBhabha();
 
  // copy 
  EmcBhabha(const EmcBhabha& otherBhabha);
 
  // Destructor
  ~EmcBhabha( );
 
  // Was the particle found in event ? 
  const bool& found() {return m_found;}
 
  // the energy to calibrate on 
  const double& calibEnergy() const {return m_calibEnergy;}
 
  // the error on the energy to calibrate on 
  const double& errorOnCalibEnergy() const {return m_errCalibEnergy;}
 
  //error on the measured shower energy 
  double errorOnShowerEnergy() const; 
  
  //the cluster of this bhabha 
  EmcShower shower() const {return m_shower;}
 
  // its theta 
 
  const double& theta() const 
    {
      if ( m_theta < 0 )
    {
      cout<<"warning: " << " EmcBhabha::theta not yet set !" << endl;
    }
      return m_theta;
    }
  
  const double& phi() const 
    {
      return m_phi;
    }
 
  const unsigned int & thetaIndex() const 
    {      
      return m_thetaIndex;
    }
 
  const unsigned int& phiIndex() const 
    {
      return m_phiIndex;
    }
  
  void print();
 
  //this is the error on the Bhabha (measurement error + 
  //  error on the energy to calibrate on)
  double sigma2() const;
 
  void setFound(bool what) {m_found=what;}
  void setCalibEnergy(double energy) {m_calibEnergy=energy;}
  void setErrorOnCalibEnergy(double error) { m_errCalibEnergy = error;}
  void setShower(EmcShower aShower){ m_shower=aShower;}
  void setTheta(double theta) {m_theta=theta;}
  void setPhi(double phi) {m_phi=phi;}
  void setThetaIndex(unsigned int thetaIndex) {m_thetaIndex=thetaIndex;}
  void setPhiIndex(unsigned int phiIndex) {m_phiIndex=phiIndex;}
 
private:
 
  // the energy to calibrate on (either the true or the deposited cluster energy 
  double m_calibEnergy;
 
  // error of the energy to calibrate on  
  double m_errCalibEnergy;
 
  // shower of bhabha particle 
  EmcShower m_shower;
 
  // theta of Bhabha 
  double m_theta;
 
  double m_phi;
 
  // was Bhabha found in event ?
  bool m_found;
 
  // the theta index of the shower 
  //  from east endcap(0-5) ,barrel(6-49) to west endcap (50-55) 
  unsigned int  m_thetaIndex;
 
  // the phi index of the shower
  unsigned int m_phiIndex;
};
 
#endif  //EMCBHABHA_H