UtrepsB.h

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
 
#pragma once
 
#include <framework/logging/Logger.h>
#include <generators/treps/Particle_array.h>
#include <generators/treps/Sutool.h>
#include <generators/treps/Treps3B.h>
 
namespace Belle2 {
  class UtrepsB : public TrepsB {
 
  public:
 
    UtrepsB(void);
    ~UtrepsB() {};
 
    void initg() ;
    Interps b00, b20, b22; // Parameter sets
 
    // FormFactor effect */
    double tpform(double, double) const override ;
 
    // angular distribution for final 2-body case */
    double tpangd(double, double) override ;
 
    // user decision routine for extra generation conditions. */
    int tpuser(TLorentzVector, TLorentzVector, Part_gen*, int) override ;
 
  private:
    double d2func(double) const;
    double qfunc(double, double) const;
 
  };
 
}