RecoPhoton.h

/**************************************************************************
 * BASF2 (Belle Analysis Framework 2)                                     *
 * Copyright(C) 2018 - Belle II Collaboration                             *
 *                                                                        *
 * Author: The Belle II Collaboration                                     *
 * Contributor: Wouter Hulsbergen, Francesco Tenchini, Jo-Frederik Krohn  *
 *                                                                        *
 * This software is provided "as is" without any warranty.                *
 **************************************************************************/
#pragma once
 
#include <analysis/VertexFitting/TreeFitter/RecoParticle.h>
 
namespace TreeFitter {
 
  class RecoPhoton : public RecoParticle {
 
  public:
    RecoPhoton(Belle2::Particle* bc, const ParticleBase* mother) ;
 
    virtual ~RecoPhoton() {};
 
    virtual ErrCode initParticleWithMother(FitParams& fitparams) override;
 
    virtual ErrCode initMotherlessParticle(FitParams& fitparams) override;
 
    ErrCode initCovariance(FitParams& fitparams) const override;
 
    ErrCode initParams();
 
    ErrCode projectRecoConstraint(const FitParams& fitparams, Projection& p) const override;
 
    virtual int dimM() const override { return dim(); }
 
    virtual bool hasEnergy() const override { return false; }
 
    virtual int dim() const override { return m_dim; }
 
    virtual int type()     const override { return kRecoPhoton ; }
 
    virtual void addToConstraintList(constraintlist& alist, int depth) const override
    {
      alist.push_back(Constraint(this, Constraint::photon, depth, dimM())) ;
    }
 
    static bool useEnergy(const Belle2::Particle& cand) ;
 
  private:
 
    const int m_dim;
 
    bool m_init ;
 
    bool m_useEnergy ;
 
    Eigen::Matrix<double, 1, 4> m_clusterPars;
 
    Eigen::Matrix<double, 4, 4> m_covariance;
 
    int m_i1;
    int m_i2;
    int m_i3;
 
  };
 
}