BesEvtGen-00-04-08/src/EvtGen/EvtGenBase/EvtBreitWignerPdf.hh

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/*******************************************************************************
 * Project: BaBar detector at the SLAC PEP-II B-factory
 * Package: EvtGenBase
 *    File: $Id: EvtBreitWignerPdf.hh,v 1.1.1.2 2007/10/26 05:03:14 pingrg Exp $
 *  Author: Alexei Dvoretskii, [email protected], 2001-2002
 *
 * Copyright (C) 2002 Caltech
 *******************************************************************************/
 
// Breit-Wigner PDF
 
#ifndef EVT_BREIT_WIGNER_PDF_HH
#define EVT_BREIT_WIGNER_PDF_HH
 
#include "EvtGenBase/EvtIntegPdf1D.hh"
 
class EvtBreitWignerPdf : public EvtIntegPdf1D {
  
public:
  
  EvtBreitWignerPdf(double min, double max, double m0, double g0);
  EvtBreitWignerPdf(const EvtBreitWignerPdf& other);
  virtual ~EvtBreitWignerPdf(); 
  
  double pdf(const EvtPoint1D& x) const;
  EvtPdf<EvtPoint1D>* clone() const
  {
    return new EvtBreitWignerPdf(*this);
  }
 
  double pdfIntegral(double m) const;
  double pdfIntegralInverse(double x) const;
 
  // accessors
 
  inline double m0() const { return _m0; }
  inline double g0() const { return _g0; }
 
private:
 
  double _m0;
  double _g0;
  
};
 
 
#endif