Subversion Repositories f9daq

#ifndef BPARTICLE_H
#define BPARTICLE_H
//+
// File : BParticle.h
// Description : class to contain particle info.
//
// Author : Ryosuke Itoh, IPNS, KEK
// Date : 28 - Jan - 2004
//-

#include "TObject.h"
#include "TClonesArray.h"

enum SIMPLEPID {PHOTON, ELECTRON, PION, MUON, KAON, PROTON, JPSI, D, DSTAR, B, PHI, LAMBDA0, ALL };

class BParticle : public TObject {

 private:
  float m_px;
  float m_py;
  float m_pz;
  float m_e;
  float m_charge;
  SIMPLEPID m_pid;

 public:
  BParticle(){};
  BParticle ( float px, float py, float pz, float e, float c, SIMPLEPID pid );
  ~BParticle(){};

  float px() const { return m_px; };
  float py() const { return m_py; };
  float pz() const { return m_pz; };
  float e() const { return m_e; };
  float GetMomentum() const { return sqrt(m_px*m_px+m_py*m_py+m_pz*m_pz); };
  float GetTransverseMomentum() const { return sqrt(m_px*m_px+m_py*m_py); };
  float charge() const { return m_charge; };
  SIMPLEPID pid() const { return m_pid; };
  float GetMass(SIMPLEPID pid);
  float GetMass();
  void SetEnergyFromMass (float mass);
  void SetEnergyFromPid ();
  void SetPid(SIMPLEPID pid){ m_pid = pid; };
  int  InMassRange(float mlower,float mupper){ float m = GetMass(); if (m>=mlower && m<=mupper) return 1; else return 0; };
  BParticle operator+(const BParticle& b){

        BParticle particle(
         px() + b.px(),
             py() + b.py(),
         pz() + b.pz(),
         e()  + b.e(),
             charge() + b.charge(),
                 PHOTON // wrong
    );

    return particle;
};  
 
 BParticle & operator=(const BParticle  &p)
 {
    //if ( this != &p){
         m_px = p.px();
         m_py = p.py();
         m_pz = p.pz();
         m_e  = p.e();
         m_charge  = p.charge();
         m_pid  =  p.pid();
        //}    
    return *this;
 };
 
 
  ClassDef ( BParticle, 1 ) // Simple particle class
};

int SelectParticles(TClonesArray *pin , int charge, SIMPLEPID type, TClonesArray *pout);
int CombineParticles(TClonesArray *plist1 ,TClonesArray *plist2 , int same, float masslow, float massup, SIMPLEPID pid, TClonesArray *pout);


#endif