PDeltaAngularDistribution.h

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// Author: I. Froehlich
// Written: 23.6.2007
// Revised:
 
#ifndef _PDELTAANGULARDISTRIBUTION_H_
#define _PDELTAANGULARDISTRIBUTION_H_
 
#include "TF1.h"
#include "TF2.h"
#include "PAngularDistribution.h"
 
class PDeltaAngularDistribution : public PAngularDistribution  {
 
 public:
    PDeltaAngularDistribution();
    PDeltaAngularDistribution(const Char_t *id, const Char_t *de);
 
    PDistribution *Clone(const char *delme=NULL) const;
 
    Bool_t Init(void);
    Bool_t Prepare(void);
    Bool_t IsNotRejected(void);
 
    void Print(const Option_t *delme=NULL) const;  //Debug info
 
    void SetTerm(int i) {
    use_term=i;
    };
 
    double SamplePolarAngle(double);
 
 private:
    double ds_dt(double cos_th_cm);
 
    void getNN_DeltaN_param();
    // parameters for N+N->N+Delta
    double lambda2, prefac, mres;
 
    int anisotropy;
 
    int use_term;
 
    ClassDef(PDeltaAngularDistribution,0) //Angular distributions is the NN->N Delta reaction
};
 
#endif