RecoTrack.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>
 
#include <analysis/dataobjects/Particle.h>
 
namespace TreeFitter {
 
  class RecoTrack : public RecoParticle {
 
  public:
    RecoTrack(Belle2::Particle* bc, const ParticleBase* mother) ;
 
    virtual ~RecoTrack() {};
 
    virtual ErrCode initParticleWithMother(FitParams& fitparams) override;
 
    virtual ErrCode initMotherlessParticle(FitParams& fitparams) override;
 
    ErrCode initCovariance(FitParams& fitparams) const override;
 
    ErrCode updFltToMotherCopy(const FitParams* fitparams);
 
    virtual ErrCode projectRecoConstraint(const FitParams&, Projection&) const override;
 
    ErrCode updateParams(double flt);
 
    virtual int dimM() const override { return 5 ; }
 
    virtual int type() const override { return kRecoTrack ; }
 
    virtual int nFinalChargedCandidates() const override { return 1 ; }
 
    virtual void addToConstraintList(constraintlist& alist, int depth) const override
    {
      alist.push_back(Constraint(this, Constraint::track, depth, dimM(), 1)) ;
    }
 
    ErrCode updFltToMother(const FitParams& fitparams) ;
 
    void setFlightLength(double flt) { m_flt = flt ; }
 
  private:
 
    double m_bfield; //Bfield along Z
 
    const Belle2::TrackFitResult* m_trackfit;
 
    bool m_cached ;
 
    double m_flt ;
 
    Eigen::Matrix<double, 1, 5> m_params;
 
    Eigen::Matrix<double, 5, 5>m_covariance;
  };
}