bak-BesEvtGen-00-04-08/src/EvtGen/EvtGenModels/EvtBtoXsllUtil.hh

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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: EvtGen/EvtBtoXsllUtil.hh
//
// Description:
// Class to generate inclusive non-resonant B -> Xs l+ l- decays.
//
// Modification history:
//
//    Stephane Willocq    Jan 19, 2001   Module created
//    Stephane Willocq    Nov  6, 2003   Update Wilson Coeffs
//
//------------------------------------------------------------------------
 
#ifndef EVTBTOXSLLUTIL_HH
#define EVTBTOXSLLUTIL_HH
 
#include "EvtGenBase/EvtComplex.hh"
#include "EvtGenBase/EvtDecayIncoherent.hh"
#include "EvtGenBase/EvtParticle.hh"
 
class EvtComplex;
 
class EvtBtoXsllUtil{
 
public:
 
  EvtComplex GetC7Eff0(double sh, bool nnlo=true);
  EvtComplex GetC7Eff1(double sh, double mb, bool nnlo=true);
  EvtComplex GetC9Eff0(double sh, double mb, bool nnlo=true, bool btod=false);
  EvtComplex GetC9Eff1(double sh, double mb, bool nnlo=true, bool btod=false);
  EvtComplex GetC10Eff(double sh, bool nnlo=true);
 
  double dGdsProb(double mb, double ms, double ml,
                  double s);
 
  double dGdsdupProb(double mb, double ms, double ml,
                     double s,  double u);
  
  double FermiMomentum( double pf );
  
  double FermiMomentumProb( double pb, double pf );
 
};
 
#endif