|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
#ifndef HeavyFlavorAnalysis_RecoDecay_BPHKinematicFit_h
#define HeavyFlavorAnalysis_RecoDecay_BPHKinematicFit_h
/** \class BPHKinematicFit
*
* Description:
* Highest-level base class to encapsulate kinematic fit operations
*
* \author Paolo Ronchese INFN Padova
* high-level base class to perform a kinematic fit
*/
//----------------------
// Base Class Headers --
//----------------------
#include "HeavyFlavorAnalysis/RecoDecay/interface/BPHDecayVertex.h"
//------------------------------------
// Collaborating Class Declarations --
//------------------------------------
#include "RecoVertex/KinematicFitPrimitives/interface/RefCountedKinematicParticle.h"
#include "RecoVertex/KinematicFitPrimitives/interface/RefCountedKinematicTree.h"
class MultiTrackKinematicConstraint;
class KinematicConstraint;
//---------------
// C++ Headers --
//---------------
#include <string>
#include <vector>
#include <map>
#include <set>
// ---------------------
// -- Class Interface --
// ---------------------
class BPHKinematicFit : public virtual BPHDecayVertex {
public:
/** Constructors are protected
* this object can exist only as part of a derived class
*/
// deleted copy constructor and assignment operator
BPHKinematicFit(const BPHKinematicFit& x) = delete;
BPHKinematicFit& operator=(const BPHKinematicFit& x) = delete;
/** Destructor
*/
~BPHKinematicFit() override = default;
/** Operations
*/
/// apply a mass constraint
void setConstraint(double mass, double sigma);
/// retrieve the constraint
double constrMass() const;
double constrSigma() const;
/// set a decaying daughter as an unique particle fitted independently
void setIndependentFit(const std::string& name, bool flag = true, double mass = -1.0, double sigma = -1.0);
/// get kinematic particles
virtual const std::vector<RefCountedKinematicParticle>& kinParticles() const;
virtual std::vector<RefCountedKinematicParticle> kinParticles(const std::vector<std::string>& names) const;
/// perform the kinematic fit and get the result
virtual const RefCountedKinematicTree& kinematicTree() const;
virtual const RefCountedKinematicTree& kinematicTree(const std::string& name, double mass, double sigma) const;
virtual const RefCountedKinematicTree& kinematicTree(const std::string& name, double mass) const;
virtual const RefCountedKinematicTree& kinematicTree(const std::string& name) const;
virtual const RefCountedKinematicTree& kinematicTree(const std::string& name, KinematicConstraint* kc) const;
virtual const RefCountedKinematicTree& kinematicTree(const std::string& name,
MultiTrackKinematicConstraint* kc) const;
/// reset the kinematic fit
virtual void resetKinematicFit() const;
/// get fit status
virtual bool isEmpty() const;
virtual bool isValidFit() const;
/// get current particle
virtual const RefCountedKinematicParticle currentParticle() const;
virtual const RefCountedKinematicVertex currentDecayVertex() const;
/// get top particle
virtual const RefCountedKinematicParticle topParticle() const;
virtual const RefCountedKinematicVertex topDecayVertex() const;
virtual ParticleMass mass() const;
/// compute total momentum after the fit
virtual const math::XYZTLorentzVector& p4() const;
/// retrieve particle mass sigma
double getMassSigma(const reco::Candidate* cand) const;
/// retrieve independent fit flag
bool getIndependentFit(const std::string& name, double& mass, double& sigma) const;
protected:
// constructors
BPHKinematicFit(int daugNum = 2, int compNum = 2);
// pointer used to retrieve informations from other bases
BPHKinematicFit(const BPHKinematicFit* ptr);
// add a simple particle giving it a name
// particles are cloned, eventually specifying a different mass
// and a sigma
virtual void addK(const std::string& name, const reco::Candidate* daug, double mass = -1.0, double sigma = -1.0);
// add a simple particle and specify a criterion to search for
// the associated track
virtual void addK(const std::string& name,
const reco::Candidate* daug,
const std::string& searchList,
double mass = -1.0,
double sigma = -1.0);
// add a previously reconstructed particle giving it a name
virtual void addK(const std::string& name, const BPHRecoConstCandPtr& comp);
// utility function used to cash reconstruction results
void setNotUpdated() const override;
private:
// mass constraint
double massConst;
double massSigma;
// map linking daughters to mass sigma
std::map<const reco::Candidate*, double> dMSig;
// map to handle composite daughters as single particles
struct FlyingParticle {
bool flag = false;
double mass = -1.0;
double sigma = -1.0;
};
std::map<const BPHRecoCandidate*, FlyingParticle> cKinP;
// temporary particle set
mutable std::vector<BPHRecoConstCandPtr> tmpList;
// reconstruction results cache
mutable bool oldKPs;
mutable bool oldFit;
mutable bool oldMom;
mutable std::map<const reco::Candidate*, RefCountedKinematicParticle> kinMap;
mutable std::map<const BPHRecoCandidate*, RefCountedKinematicParticle> kCDMap;
mutable std::vector<RefCountedKinematicParticle> allParticles;
mutable RefCountedKinematicTree kinTree;
mutable math::XYZTLorentzVector totalMomentum;
// build kin particles, perform the fit and compute the total momentum
virtual void buildParticles() const;
virtual void addParticles(std::vector<RefCountedKinematicParticle>& kl,
std::map<const reco::Candidate*, RefCountedKinematicParticle>& km,
std::map<const BPHRecoCandidate*, RefCountedKinematicParticle>& cm) const;
virtual void getParticles(const std::string& moth,
const std::string& daug,
std::vector<RefCountedKinematicParticle>& kl,
std::set<RefCountedKinematicParticle>& ks,
const BPHKinematicFit* curr) const;
virtual void getParticles(const std::string& moth,
const std::vector<std::string>& daug,
std::vector<RefCountedKinematicParticle>& kl,
std::set<RefCountedKinematicParticle>& ks,
const BPHKinematicFit* curr) const;
virtual unsigned int numParticles(const BPHKinematicFit* cand = nullptr) const;
static void insertParticle(RefCountedKinematicParticle& kp,
std::vector<RefCountedKinematicParticle>& kl,
std::set<RefCountedKinematicParticle>& ks);
virtual const BPHKinematicFit* splitKP(const std::string& name,
std::vector<RefCountedKinematicParticle>* kComp,
std::vector<RefCountedKinematicParticle>* kTail = nullptr) const;
virtual const RefCountedKinematicTree& kinematicTree(const std::vector<RefCountedKinematicParticle>& kPart,
MultiTrackKinematicConstraint* kc) const;
virtual void fitMomentum() const;
};
#endif
|