betagamma.cxx

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void bg(int i, double p){
  double mass = 0;
  switch(i){
  case 0:
    mass = 0.511e-3;
    cout << "mass " << mass << "  betagamma " << p/mass << endl;
    break;
  case 1:
    mass = 105.658e-3;
    cout << "mass " << mass << "  betagamma " << p/mass << endl;
    break;
  case 2:
    mass = 139.570e-3;
    cout << "mass " << mass << "  betagamma " << p/mass << endl;
    break;
  case 3:
    mass = 493.677e-3;
    cout << "mass " << mass << "  betagamma " << p/mass << endl;
    break;
  case 4:
    mass = 938.272e-3;
    cout << "mass " << mass << "  betagamma " << p/mass << endl;
    break;
  default:
    cout << "bg(index, momentum) index:0/1/2/3/4; e/mu/pi/k/p" << endl;
  }
}
 
 
void rebg(int i, double bg){
  double mass = 0;
  switch(i){
  case 0:
    mass = 0.511e-3;
    cout << "mass " << mass << "  momentum " << bg*mass << endl;
    break;
  case 1:
    mass = 105.658e-3;
    cout << "mass " << mass << "  momentum " << bg*mass << endl;
    break;
  case 2:
    mass = 139.570e-3;
    cout << "mass " << mass << "  momentum " << bg*mass << endl;
    break;
  case 3:
    mass = 493.677e-3;
    cout << "mass " << mass << "  momentum " << bg*mass << endl;
    break;
  case 4:
    mass = 938.272e-3;
    cout << "mass " << mass << "  momentum " << bg*mass << endl;
    break;
  default:
    cout << "bg(index, betagamma) index:0/1/2/3/4; e/mu/pi/k/p" << endl;
  }
}