Belle II Software light-2406-ragdoll
RecoilMassKFit.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 RecoilMassKFit : public KFitBase {
31 public:
33 RecoilMassKFit(void);
36
37
38 public:
43 enum KFitError::ECode setVertex(const HepPoint3D& v);
48 enum KFitError::ECode setVertexError(const CLHEP::HepSymMatrix& e);
53 enum KFitError::ECode setRecoilMass(const double m);
58 enum KFitError::ECode setFourMomentum(const ROOT::Math::PxPyPzEVector& m);
63 enum KFitError::ECode setFlagAtDecayPoint(const bool flag);
68 enum KFitError::ECode fixMass(void);
73 enum KFitError::ECode unfixMass(void);
78 enum KFitError::ECode setTrackVertexError(const CLHEP::HepMatrix& e);
83 enum KFitError::ECode setCorrelation(const CLHEP::HepMatrix& m) override;
84 enum KFitError::ECode setZeroCorrelation(void) override;
85
86
91 const HepPoint3D getVertex(const int flag = KFitConst::kAfterFit) const;
96 const CLHEP::HepSymMatrix getVertexError(const int flag = KFitConst::kAfterFit) const;
100 bool getFlagAtDecayPoint(void) const;
104 bool getFlagFitWithVertex(void) const;
105 double getCHIsq(void) const override;
111 const CLHEP::HepMatrix getTrackVertexError(const int id, const int flag = KFitConst::kAfterFit) const;
112 double getTrackCHIsq(const int id) const override;
113 const CLHEP::HepMatrix getCorrelation(const int id1, const int id2,
114 const int flag = KFitConst::kAfterFit) const override;
115
116
117 public:
121 enum KFitError::ECode doFit(void);
122
128
129 private:
130 enum KFitError::ECode prepareInputMatrix(void) override;
131 enum KFitError::ECode prepareInputSubMatrix(void) override;
132 enum KFitError::ECode prepareCorrelation(void) override;
133 enum KFitError::ECode prepareOutputMatrix(void) override;
134 enum KFitError::ECode makeCoreMatrix(void) override;
135 enum KFitError::ECode calculateNDF(void) override;
136
137
138 private:
140 HepPoint3D m_BeforeVertex;
142 CLHEP::HepSymMatrix m_BeforeVertexError;
144 std::vector<CLHEP::HepMatrix> m_BeforeTrackVertexError;
145
147 HepPoint3D m_AfterVertex;
149 CLHEP::HepSymMatrix m_AfterVertexError;
151 std::vector<CLHEP::HepMatrix> m_AfterTrackVertexError;
152
159
162
164 ROOT::Math::PxPyPzEVector m_FourMomentum;
165
167 std::vector<int> m_IsFixMass;
168 };
169
170 } // namespace analysis
171
173} // 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
RecoilMassKFit is a derived class from KFitBase to perform a kinematical fit with a recoil mass const...
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 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 a recoil mass .
bool m_FlagAtDecayPoint
Flag controlled by setFlagAtDecayPoint().
bool getFlagAtDecayPoint(void) const
Get a flag if to constraint at the decay point in the 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 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 setRecoilMass(const double m)
Set an invariant mass for the four momentum-constraint fit.
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.
enum KFitError::ECode doFit(void)
Perform a recoil-mass 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 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< 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.
const HepPoint3D getVertex(const int flag=KFitConst::kAfterFit) const
Get a vertex position.
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.
~RecoilMassKFit(void)
Destruct the object.
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.
RecoilMassKFit(void)
Construct an object with no argument.
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