PowhegResHook.h

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// Hook for setting shower scale in top and W resonances
// for Powheg ttb_NLO_dec and b_bbar_4l processes
// C++ port of algorithm by Jezo et. al. (arXiv:1607.04538, Appendix B.2)
#include "GeneratorInterface/Pythia8Interface/plugins/PowhegHooksBB4L.h"
 
class PowhegResHook : public Pythia8::UserHooks {
public:
  // Constructor and destructor.
  PowhegResHook() {}
  ~PowhegResHook() override {}
 
  bool canSetResonanceScale() override { return true; }
 
  double scaleResonance(const int iRes, const Pythia8::Event& event) override;
 
  //--------------------------------------------------------------------------
 
private:
  bool calcScales_;
};