RecoParticle.h

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//****************************************************************************
//*                   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 RECOPARTICLE_H
#define RECOPARTICLE_H 1

#include "ParticleBase.h"
#include "Rtypes.h"

namespace DecayTreeFitter {

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

  virtual int dimM() const = 0; // dimension of the measurement
  virtual ErrCode initPar1(FitParams *) { return ErrCode::success; }
  // virtual ErrCode initCov(FitParams*) const ;
  virtual std::string parname(int index) const;
  virtual int dim() const { return 3; } //(px,py,pz)

  virtual int momIndex() const { return index(); }
  virtual bool hasEnergy() const { return false; }

  virtual ErrCode projectRecoConstraint(const FitParams *fitparams, Projection &p) const = 0;
  virtual ErrCode projectConstraint(Constraint::Type, const FitParams *, Projection &) const;
  virtual double chiSquare(const FitParams *fitparams) const;

  ClassDef(RecoParticle, 1)
};

} // namespace DecayTreeFitter
#endif