EvtBtoXsgammaFixedMass.cc

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//--------------------------------------------------------------------------
//
// Environment:
//      This software is part of the EvtGen package developed jointly
//      for the BaBar and CLEO collaborations.  If you use all or part
//      of it, please give an appropriate acknowledgement.
//
// Module: EvtBtoXsgammaKagan.cc
//
// Description:
//       Routine to perform two-body B->Xs,gamma decays with a fixed hadronic
//       mass. For spectrum measurements.
//       The input parameters are 1: the hadronic mass
#include "../EvtGenBase/EvtPatches.hh"
 
// Modification history:
//
//      Jim Libby October 11 2002
//------------------------------------------------------------------------
//
 
#include "EvtBtoXsgamma.hh"
#include "EvtBtoXsgammaFixedMass.hh"
#include <fstream>
#include <stdlib.h>
using std::endl;
using std::fstream;
 
EvtBtoXsgammaFixedMass::~EvtBtoXsgammaFixedMass() {}
 
void EvtBtoXsgammaFixedMass::init( int nArg, double* args ) {
 
  if ( ( nArg ) > 2 || ( nArg > 1 && nArg < 2 ) )
  {
 
    report( ERROR, "EvtGen" ) << "EvtBtoXsgamma generator model "
                              << "EvtBtoXsgammaFixedMass expected "
                              << "either 1(default config) or two arguments but found: "
                              << nArg << endl;
    report( ERROR, "EvtGen" ) << "Will terminate execution!" << endl;
    ::abort();
  }
 
  if ( nArg == 1 ) { _mH = 2.0; }
  else { _mH = args[1]; }
}
 
double EvtBtoXsgammaFixedMass::GetMass( int Xscode ) { return _mH; }