RooFlatte.hh

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#ifndef ROO_FLATTE
#define ROO_FLATTE

#include "RooFitCore/RooAbsPdf.hh"
#include "RooFitCore/RooRealProxy.hh"

class RooRealVar;

class RooFlatte : public RooAbsPdf {

public:
  RooFlatte(const char *name, const char *title,
            RooAbsReal& _x, RooAbsReal& _mean, 
            RooAbsReal& _g0, RooAbsReal& _m0a, RooAbsReal& _m0b,
            RooAbsReal& _g1, RooAbsReal& _m1a, RooAbsReal& _m1b);

  RooFlatte(const RooFlatte& other, 
                    const char* name=0) ;
  virtual TObject* clone(const char* newname) const { 
    return new RooFlatte(*this,newname); 
  }
  inline virtual ~RooFlatte() { }

protected:

  RooRealProxy x ;     // 
  RooRealProxy mean ;  // resonance mass
  RooRealProxy g0 ;  // square of the coupling constant to channel 1
  RooRealProxy m0a ; // mass of first final state particle in channel 1
  RooRealProxy m0b ; // mass of second final state particle in channel 1
  RooRealProxy g1 ;  // square of the coupling constant to channel 2
  RooRealProxy m1a ; // mass of first final state particle in channel 2
  RooRealProxy m1b ; // mass of second final state particle in channel 2
        
  Double_t evaluate() const ;

private:
 
  ClassDef(RooFlatte,0) // Flatte PDF using BES parameterisation
};

#endif

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