Belle II Software light-2406-ragdoll
MassFourCFitKFit.h
1/**************************************************************************
2 * basf2 (Belle II Analysis Software Framework) *
3 * Author: The Belle II Collaboration *
4 * *
5 * See git log for contributors and copyright holders. *
6 * This file is licensed under LGPL-3.0, see LICENSE.md. *
7 **************************************************************************/
8
9#pragma once
10#include <analysis/VertexFitting/KFit/KFitConst.h>
11#include <analysis/VertexFitting/KFit/KFitError.h>
12#include <analysis/VertexFitting/KFit/KFitBase.h>
13#include <Math/Vector4D.h>
14
15#ifndef ENABLE_BACKWARDS_COMPATIBILITY
16typedef HepGeom::Point3D<double> HepPoint3D;
17#endif
18
19namespace Belle2 {
25 namespace analysis {
26
30 class MassFourCFitKFit : public KFitBase {
31 public:
36
37
38 public:
39
40
46 enum KFitError::ECode addMassConstraint(const double m, std::vector<unsigned>& childTrackId);
47
52 enum KFitError::ECode setVertex(const HepPoint3D& v);
57 enum KFitError::ECode setVertexError(const CLHEP::HepSymMatrix& e);
62 enum KFitError::ECode setInvariantMass(const double m);
67 enum KFitError::ECode setFourMomentum(const ROOT::Math::PxPyPzEVector& m);
72 enum KFitError::ECode setFlagAtDecayPoint(const bool flag);
77 enum KFitError::ECode fixMass(void);
82 enum KFitError::ECode unfixMass(void);
87 enum KFitError::ECode setTrackVertexError(const CLHEP::HepMatrix& e);
92 enum KFitError::ECode setCorrelation(const CLHEP::HepMatrix& m) override;
93 enum KFitError::ECode setZeroCorrelation(void) override;
94
95
100 const HepPoint3D getVertex(const int flag = KFitConst::kAfterFit) const;
105 const CLHEP::HepSymMatrix getVertexError(const int flag = KFitConst::kAfterFit) const;
109 double getInvariantMass(void) const;
113 bool getFlagAtDecayPoint(void) const;
117 bool getFlagFitWithVertex(void) const;
118 double getCHIsq(void) const override;
124 const CLHEP::HepMatrix getTrackVertexError(const int id, const int flag = KFitConst::kAfterFit) const;
125 double getTrackCHIsq(const int id) const override;
126 const CLHEP::HepMatrix getCorrelation(const int id1, const int id2,
127 const int flag = KFitConst::kAfterFit) const override;
128
129
130 public:
134 enum KFitError::ECode doFit(void);
135
141
142 private:
143 enum KFitError::ECode prepareInputMatrix(void) override;
144 enum KFitError::ECode prepareInputSubMatrix(void) override;
145 enum KFitError::ECode prepareCorrelation(void) override;
146 enum KFitError::ECode prepareOutputMatrix(void) override;
147 enum KFitError::ECode makeCoreMatrix(void) override;
148 enum KFitError::ECode calculateNDF(void) override;
149
150
151 private:
153 HepPoint3D m_BeforeVertex;
155 CLHEP::HepSymMatrix m_BeforeVertexError;
157 std::vector<CLHEP::HepMatrix> m_BeforeTrackVertexError;
158
160 HepPoint3D m_AfterVertex;
162 CLHEP::HepSymMatrix m_AfterVertexError;
164 std::vector<CLHEP::HepMatrix> m_AfterTrackVertexError;
165
172
175
177 ROOT::Math::PxPyPzEVector m_FourMomentum;
178
180 std::vector<int> m_IsFixMass;
181
184
186 std::vector<double> m_ConstraintMassList;
187
189 std::vector<std::pair<int, int>> m_ConstraintMassChildLists;
190 };
191
192 } // namespace analysis
193
195} // namespace Belle2
Class to store reconstructed particles.
Definition: Particle.h:75
KFitBase is a base class for kinematical fitters.
Definition: KFitBase.h:37
ECode
ECode is a error code enumerate.
Definition: KFitError.h:34
MassFourCFitKFit is a derived class from KFitBase to perform mass and 4 momentum-constraint kinematic...
enum KFitError::ECode setZeroCorrelation(void) override
Indicate no correlation between tracks.
enum KFitError::ECode setVertex(const HepPoint3D &v)
Set an initial vertex position for the mass-four-momentum-constraint fit.
bool m_FlagTrackVertexError
Flag to indicate if the vertex error matrix of the child particle is preset.
enum KFitError::ECode setFourMomentum(const ROOT::Math::PxPyPzEVector &m)
Set an 4 Momentum for the mass-four-constraint fit.
bool m_FlagAtDecayPoint
Flag controlled by setFlagAtDecayPoint().
bool getFlagAtDecayPoint(void) const
Get a flag if to constraint at the decay point in the mass-four-momentum-constraint fit.
enum KFitError::ECode addMassConstraint(const double m, std::vector< unsigned > &childTrackId)
Set an invariant mass of daughter particle for the mass-four-momentum-constraint fit.
enum KFitError::ECode prepareInputMatrix(void) override
Build grand matrices for minimum search from input-track properties.
bool getFlagFitWithVertex(void) const
Get a flag if the fit is allowed with moving the vertex position.
enum KFitError::ECode calculateNDF(void) override
Calculate an NDF of the fit.
double getCHIsq(void) const override
Get a chi-square of the fit.
enum KFitError::ECode setFlagAtDecayPoint(const bool flag)
Set a flag if to constraint at the decay point in the mass-four-momentum-constraint fit.
enum KFitError::ECode setTrackZeroVertexError(void)
Indicate no vertex uncertainty in the child particle in the addTrack'ed order.
std::vector< int > m_IsFixMass
Array of flags whether the track property is fixed at the mass.
enum KFitError::ECode updateMother(Particle *mother)
Update mother particle.
enum KFitError::ECode unfixMass(void)
Tell the object to unfix the last added track property at the invariant mass.
enum KFitError::ECode prepareInputSubMatrix(void) override
Build sub-matrices for minimum search from input-track properties.
bool m_FlagFitIncludingVertex
Flag to indicate if the fit is allowed with moving the vertex position.
~MassFourCFitKFit(void)
Destruct the object.
enum KFitError::ECode doFit(void)
Perform a mass-four-momentum-constraint fit.
double m_InvariantMass
Invariant mass.
enum KFitError::ECode setInvariantMass(const double m)
Set an invariant mass for the mass-four-momentum-constraint fit.
std::vector< CLHEP::HepMatrix > m_BeforeTrackVertexError
array of vertex error matrices before the fit.
enum KFitError::ECode makeCoreMatrix(void) override
Build matrices using the kinematical constraint.
enum KFitError::ECode setVertexError(const CLHEP::HepSymMatrix &e)
Set an initial vertex error matrix for the mass-four-momentum-constraint fit.
enum KFitError::ECode setTrackVertexError(const CLHEP::HepMatrix &e)
Set a vertex error matrix of the child particle in the addTrack'ed order.
enum KFitError::ECode prepareCorrelation(void) override
Build a grand correlation matrix from input-track properties.
HepPoint3D m_AfterVertex
Vertex position after the fit.
enum KFitError::ECode setCorrelation(const CLHEP::HepMatrix &m) override
Set a correlation matrix.
std::vector< std::pair< int, int > > m_ConstraintMassChildLists
Daughter track id of constrained particle.
std::vector< CLHEP::HepMatrix > m_AfterTrackVertexError
array of vertex error matrices after the fit.
const CLHEP::HepMatrix getCorrelation(const int id1, const int id2, const int flag=KFitConst::kAfterFit) const override
Get a correlation matrix between two tracks.
double getTrackCHIsq(const int id) const override
Get a chi-square of the track.
const CLHEP::HepSymMatrix getVertexError(const int flag=KFitConst::kAfterFit) const
Get a vertex error matrix.
MassFourCFitKFit()
Construct an object with no argument.
const HepPoint3D getVertex(const int flag=KFitConst::kAfterFit) const
Get a vertex position.
std::vector< double > m_ConstraintMassList
constrained mass
const CLHEP::HepMatrix getTrackVertexError(const int id, const int flag=KFitConst::kAfterFit) const
Get a vertex error matrix of the track.
CLHEP::HepSymMatrix m_AfterVertexError
Vertex error matrix after the fit.
enum KFitError::ECode prepareOutputMatrix(void) override
Build an output error matrix.
CLHEP::HepSymMatrix m_BeforeVertexError
Vertex error matrix before the fit.
HepPoint3D m_BeforeVertex
Vertex position before the fit.
enum KFitError::ECode fixMass(void)
Tell the object to fix the last added track property at the invariant mass.
ROOT::Math::PxPyPzEVector m_FourMomentum
Four Momentum.
double getInvariantMass(void) const
Get an invariant mass.
Abstract base class for different kinds of events.
Definition: ClusterUtils.h:24
static const int kAfterFit
Input parameter to specify after-fit when setting/getting a track attribute.
Definition: KFitConst.h:37