RecoResonance.h

Go to the documentation of this file.

//****************************************************************************
//*                   This file is part of PandaRoot.                        *
//*                                                                          *
//*            PandaRoot is distributed under the terms of the               *
//*              GNU General Public License (GPL) version 3,                 *
//*                 copied verbatim in the file "LICENSE".                   *
//*                                                                          *
//*  Copyright (C) 2006 - 2024 FAIR GmbH and copyright holders of PandaRoot  *
//*     The copyright holders are listed in the file "COPYRIGHTHOLDERS".     *
//*               The authors are listed in the file "AUTHORS".              *
//****************************************************************************

// ******************************************************
// DecayTreeFitter Package
// We thank the original author Wouter Hulsbergen
// (BaBar, LHCb) for providing the sources.
// http://arxiv.org/abs/physics/0503191v1 (2005)
// Adaptation & Development for PANDA: Ralf Kliemt (2015)
// ******************************************************
#ifndef RECORESONANCE_H
#define RECORESONANCE_H 1

#include "RecoComposite.h"
#include "Rtypes.h"

namespace DecayTreeFitter {

class RecoResonance : public RecoComposite {
 public:
  RecoResonance(RhoCandidate *bc, const ParticleBase *mother);
  virtual ~RecoResonance();

  virtual int dim() const { return hasEnergy() ? 4 : 3; } // (px,py,pz,(E))

  virtual ErrCode projectConstraint(Constraint::Type, const FitParams *, Projection &) const;
  virtual ErrCode initPar1(FitParams *);
  virtual ErrCode initPar2(FitParams *);
  virtual int type() const { return kRecoResonance; }

  virtual int posIndex() const { return mother()->posIndex(); }
  virtual int momIndex() const { return index(); }
  virtual int lenIndex() const { return -1; }

  virtual std::string parname(int index) const;

  virtual void addToConstraintList(constraintlist &alist, int depth) const { alist.push_back(Constraint(this, Constraint::resonance, depth, dimM())); }

 private:
  ClassDef(RecoResonance, 1)
};

} // namespace DecayTreeFitter

#endif