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Comparing UserCode/MitAna/DataTree/interface/Track.h (file contents):
Revision 1.7 by loizides, Wed Jun 18 19:08:14 2008 UTC vs.
Revision 1.34 by loizides, Tue Mar 3 17:04:10 2009 UTC

#	Line 3 | Line 3
3		//
4		// Track
5		//
6	<	// This will be re-written :-)
6	>	// We store the CMSSW track parameterization
7	>	// Parameters associated to the 5D curvilinear covariance matrix:
8	>	// (qoverp, lambda, phi, dxy, dsz)
9	>	// defined as:
10	>	// qoverp = q / abs(p) = signed inverse of momentum [1/GeV]
11	>	// lambda = pi/2 - polar angle at the given point
12	>	// phi = azimuth angle at the given point
13	>	// dxy = -vx*sin(phi) + vy*cos(phi) [cm]
14	>	// dsz = vz*cos(lambda) - (vx*cos(phi)+vy*sin(phi))*sin(lambda) [cm]
15	>	// (See http://cmslxr.fnal.gov/lxr/source/DataFormats/TrackReco/interface/TrackBase.h)
16	>	//
17	>	// Format for fHits: (We do not use anything resembling reco::HitPattern from CMSSW because that
18	>	// data format requires 800 bits per track!)
19	>	// There is a one to one mapping between bits and tracker layers, where layers are enumerated
20	>	// seperately in the PXB, PXF, TIB, TID, TOB, TEC and r-phi and stereo modules are treated as
21	>	// seperate layers in those detectors which have them
22	>	// (TIB L1,L2, TID L1,L2,L3, TOB L1,L2, TEC L1,L2,L3,L4,L5,L6,L7,L8,L9).
23	>	//
24	>	// A bit value of 1 indicates a hit in the corresponding layer, and 0 indicates no hit.
25	>	//
26	>	// Note that currently this only stores information about hits in the Tracker,
27	>	// but muon chamber information will likely be added as well.
28	>	//
29	>	// Bit-Layer assignments (starting from bit 0):
30	>	// Bit  0: PXB L1
31	>	// Bit  1: PXB L2
32	>	// Bit  2: PXB L3
33	>	// Bit  3: PXF L1
34	>	// Bit  4: PXF L2
35	>	// Bit  5: TIB L1 r-phi
36	>	// Bit  6: TIB L1 stereo
37	>	// Bit  7: TIB L2 r-phi
38	>	// Bit  8: TIB L2 stereo
39	>	// Bit  9: TIB L3 r-phi
40	>	// Bit 10: TIB L4 r-phi
41	>	// Bit 11: TID L1 r-phi
42	>	// Bit 12: TID L1 stereo
43	>	// Bit 13: TID L2 r-phi
44	>	// Bit 14: TID L2 stereo
45	>	// Bit 15: TID L3 r-phi
46	>	// Bit 16: TID L3 stereo
47	>	// Bit 17: TOB L1 r-phi
48	>	// Bit 18: TOB L1 stereo
49	>	// Bit 19: TOB L2 r-phi
50	>	// Bit 20: TOB L2 stereo
51	>	// Bit 21: TOB L3 r-phi
52	>	// Bit 22: TOB L4 r-phi
53	>	// Bit 23: TOB L5 r-phi
54	>	// Bit 24: TOB L6 r-phi
55	>	// Bit 25: TEC L1 r-phi
56	>	// Bit 26: TEC L1 stereo
57	>	// Bit 27: TEC L2 r-phi
58	>	// Bit 28: TEC L2 stereo
59	>	// Bit 29: TEC L3 r-phi
60	>	// Bit 30: TEC L3 stereo
61	>	// Bit 31: TEC L4 r-phi
62	>	// Bit 32: TEC L4 stereo
63	>	// Bit 33: TEC L5 r-phi
64	>	// Bit 34: TEC L5 stereo
65	>	// Bit 35: TEC L6 r-phi
66	>	// Bit 36: TEC L6 stereo
67	>	// Bit 37: TEC L7 r-phi
68	>	// Bit 38: TEC L7 stereo
69	>	// Bit 39: TEC L8 r-phi
70	>	// Bit 40: TEC L8 stereo
71	>	// Bit 41: TEC L9 r-phi
72	>	// Bit 42: TEC L9 stereo
73		//
74		// Authors: C.Loizides, J.Bendavid, C.Paus
75		//--------------------------------------------------------------------------------------------------
76
77	<	#ifndef DATATREE_TRACK_H
78	<	#define DATATREE_TRACK_H
77	>	#ifndef MITANA_DATATREE_TRACK_H
78	>	#define MITANA_DATATREE_TRACK_H
79
80		#include "MitAna/DataTree/interface/DataObject.h"
81	+	#include "MitAna/DataTree/interface/SuperCluster.h"
82	+	#include "MitAna/DataTree/interface/MCParticle.h"
83	+	#include "MitAna/DataTree/interface/BitMask.h"
84	+	#include "MitAna/DataTree/interface/BaseVertex.h"
85	+	#include "MitAna/DataTree/interface/Types.h"
86
87		namespace mithep
88		{
89		class Track : public DataObject
90		{
91		public:
92	<	Track() {}
93	<	Track(Double_t phi, Double_t d0, Double_t pt, Double_t dz, Double_t theta) :
94	<	fPhi(phi), fD0(d0), fPt(pt), fDz(dz), fTheta(theta) {}
92	>	enum EHitLayer {
93	>	PXB1,
94	>	PXB2,
95	>	PXB3,
96	>	PXF1,
97	>	PXF2,
98	>	TIB1,
99	>	TIB1S,
100	>	TIB2,
101	>	TIB2S,
102	>	TIB3,
103	>	TIB4,
104	>	TID1,
105	>	TID1S,
106	>	TID2,
107	>	TID2S,
108	>	TID3,
109	>	TID3S,
110	>	TOB1,
111	>	TOB1S,
112	>	TOB2,
113	>	TOB2S,
114	>	TOB3,
115	>	TOB4,
116	>	TOB5,
117	>	TOB6,
118	>	TEC1,
119	>	TEC1S,
120	>	TEC2,
121	>	TEC2S,
122	>	TEC3,
123	>	TEC3S,
124	>	TEC4,
125	>	TEC4S,
126	>	TEC5,
127	>	TEC5S,
128	>	TEC6,
129	>	TEC6S,
130	>	TEC7,
131	>	TEC7S,
132	>	TEC8,
133	>	TEC8S,
134	>	TEC9,
135	>	TEC9S
136	>	};
137	>
138	>	Track() : fQOverP(0), fQOverPErr(0), fLambda(0), fLambdaErr(0),
139	>	fPhi0(0), fPhi0Err(0), fDxy(0), fDxyErr(0), fDsz(0), fDszErr(0),
140	>	fChi2(0), fNdof(0), fEtaEcal(0), fPhiEcal(0) {}
141	>	Track(Double_t qOverP, Double_t lambda, Double_t phi0, Double_t dxy, Double_t dsz) :
142	>	fQOverP(qOverP), fQOverPErr(0), fLambda(lambda), fLambdaErr(0),
143	>	fPhi0(phi0), fPhi0Err(0), fDxy(dxy), fDxyErr(0), fDsz(dsz), fDszErr(0),
144	>	fChi2(0), fNdof(0), fEtaEcal(0), fPhiEcal(0) {}
145		~Track() {}
146
147	<	void      SetHelix (Double_t phi, Double_t d0, Double_t pt, Double_t dz, Double_t theta);
148	<	void      SetErrors(Double_t phiErr, Double_t d0Err, Double_t ptErr, Double_t dzErr,
149	<	Double_t thetaErr);
150	<
151	<	Double_t  Phi()      const { return fPhi; }
152	<	Double_t  D0()       const { return fD0; }
153	<	Double_t  Pt()       const { return fPt; }
154	<	Double_t  Dz()       const { return fDz; }
155	<	Double_t  Theta()    const { return fTheta; }
156	<
157	<	Double_t  PhiErr()   const { return fPhiErr; }
158	<	Double_t  D0Err()    const { return fD0Err; }
159	<	Double_t  PtErr()    const { return fPtErr; }
160	<	Double_t  DzErr()    const { return fDzErr; }
161	<	Double_t  ThetaErr() const { return fThetaErr; }
162	<
163	<	Int_t     Charge()   const { return fCharge; }
164	<
165	<	void      SetCharge(Int_t charge) { fCharge = charge; }
166	<
147	>	Int_t                Charge()         const { return (fQOverP>0) ? 1 : -1;  }
148	>	Double_t             Chi2()           const { return fChi2;                 }
149	>	Double_t             RChi2()          const { return fChi2/(Double_t)fNdof; }
150	>	void                 ClearHit(EHitLayer l)  { fHits.ClearBit(l);            }
151	>	Double_t             D0()             const { return -fDxy;                 }
152	>	Double_t             D0Corrected(const BaseVertex &iVertex) const;
153	>	Double_t             D0Err()          const { return fDxyErr;               }
154	>	Double_t             Dsz()            const { return fDsz;                  }
155	>	Double_t             DszErr()         const { return fDszErr;               }
156	>	Double_t             Dxy()            const { return fDxy;                  }
157	>	Double_t             DxyErr()         const { return fDxyErr;               }
158	>	Double_t             E(Double_t m)    const { return TMath::Sqrt(E2(m));    }
159	>	Double_t             E2(Double_t m)   const { return P2()+m*m;              }
160	>	Double_t             Eta()            const { return Mom().Eta();           }
161	>	Double_t             EtaEcal()        const { return fEtaEcal;              }
162	>	Bool_t               Hit(EHitLayer l) const { return fHits.TestBit(l);      }
163	>	const BitMask48     &Hits()           const { return fHits;                 }
164	>	Double_t             Lambda()         const { return fLambda;               }
165	>	Double_t             LambdaErr()      const { return fLambdaErr;            }
166	>	const MCParticle    *MCPart()         const { return fMCParticleRef.Obj();  }
167	>	const ThreeVectorC  &Mom()            const;
168	>	FourVectorM          Mom4(Double_t m) const { return FourVectorM(Pt(),Eta(),Phi(),E(m)); }
169	>	UInt_t               Ndof()           const { return fNdof;                              }
170	>	UInt_t               NHits()          const { return fHits.NBitsSet();                   }
171	>	UInt_t               NStereoHits()    const { return StereoHits().NBitsSet();            }
172	>	EObjType             ObjType()        const { return kTrack;                             }
173	>	Double_t             P2()             const { return 1./fQOverP/fQOverP;                 }
174	>	Double_t             P()              const { return TMath::Abs(1./fQOverP);             }
175	>	Double_t             Phi()            const { return fPhi0;                              }
176	>	Double_t             Phi0()           const { return fPhi0;                              }
177	>	Double_t             Phi0Err()        const { return fPhi0Err;                           }
178	>	Double_t             PhiEcal()        const { return fPhiEcal;                           }
179	>	Double_t             Prob()           const { return TMath::Prob(fChi2,fNdof);           }
180	>	Double_t             Pt()             const { return Mom().Rho();                        }
181	>	Double_t             Px()             const { return Mom().X();                          }
182	>	Double_t             Py()             const { return Mom().Y();                          }
183	>	Double_t             Pz()             const { return Mom().Z();                          }
184	>	Double_t             QOverP()         const { return fQOverP;                            }
185	>	Double_t             QOverPErr()      const { return fQOverPErr;                         }
186	>	Double_t             Theta()          const { return (TMath::PiOver2() - fLambda);       }
187	>	Double_t             Z0()             const { return fDsz/TMath::Cos(fLambda);           }
188	>	const SuperCluster  *SCluster()       const { return fSuperClusterRef.Obj();             }
189	>	const BitMask48      StereoHits()     const { return (fHits & StereoLayers());           }
190	>	void                 SetChi2(Double_t chi2)              { fChi2 = chi2;                 }
191	>	void                 SetErrors(Double_t qOverPErr, Double_t lambdaErr, Double_t phi0Err,
192	>	Double_t dXyErr, Double_t dSzErr);
193	>	void                 SetEtaEcal(Double_t eta)            { fEtaEcal = eta;               }
194	>	void                 SetHelix (Double_t qOverP, Double_t lambda, Double_t phi0,
195	>	Double_t dXy, Double_t dSz);
196	>	void                 SetHit(EHitLayer l)                 { fHits.SetBit(l);              }
197	>	void                 SetHits(const BitMask48 &hits)      { fHits = hits;                 }
198	>	void                 SetNdof(UInt_t dof)                 { fNdof = dof;                  }
199	>	void                 SetMCPart(const MCParticle *p)      { fMCParticleRef = p;           }
200	>	void                 SetPhiEcal(Double_t phi)            { fPhiEcal = phi;               }
201	>	void                 SetSCluster(const SuperCluster* sc) { fSuperClusterRef = sc;        }
202	>
203	>	static
204	>	const BitMask48      StereoLayers();
205	>
206		protected:
207	<	Double_t fPhi;      // azimuthal angle
208	<	Double_t fD0;       // raw impact parameter
209	<	Double_t fPt;       // transverse momentum
210	<	Double_t fDz;       // z-displacement
211	<	Double_t fTheta;    // polar angle
212	<	Double_t fPhiErr;   // uncertainy on phi
213	<	Double_t fD0Err;    // uncertainty on D0
214	<	Double_t fPtErr;    // uncertainty on pt
215	<	Double_t fDzErr;    // uncertainty on dz
216	<	Double_t fThetaErr; // uncertainty on theta
217	<	Int_t    fCharge;   // electric charge of reconstructed track
207	>	void                 ClearMom()    const { fCacheMomFlag.ClearCache(); }
208	>	void                 GetMom()      const;
209	>
210	>	BitMask48            fHits;                //storage for mostly hit information
211	>	Double32_t           fQOverP;              //signed inverse of momentum [1/GeV]
212	>	Double32_t           fQOverPErr;           //error of q/p
213	>	Double32_t           fLambda;              //pi/2 - polar angle at the reference point
214	>	Double32_t           fLambdaErr;           //error of lambda
215	>	Double32_t           fPhi0;                //azimuth angle at the given point
216	>	Double32_t           fPhi0Err;             //error of azimuthal angle
217	>	Double32_t           fDxy;                 //transverse distance to reference point [cm]
218	>	Double32_t           fDxyErr;              //error of transverse distance
219	>	Double32_t           fDsz;                 //longitudinal distance to reference point [cm]
220	>	Double32_t           fDszErr;              //error of longitudinal distance
221	>	Double32_t           fChi2;                //chi squared of track fit
222	>	UInt_t               fNdof;                //degree-of-freedom of track fit
223	>	Double32_t           fEtaEcal;             //eta of track at Ecal front face
224	>	Double32_t           fPhiEcal;             //phi of track at Ecal front face
225	>	Ref<SuperCluster>    fSuperClusterRef;     //superCluster crossed by track
226	>	Ref<MCParticle>      fMCParticleRef;       //reference to sim particle (for monte carlo)
227	>	mutable CacheFlag    fCacheMomFlag;        //||cache validity flag for momentum
228	>	mutable ThreeVectorC fCachedMom;           //!cached momentum vector
229
230	<	ClassDef(Track, 1) // Track class
230	>	ClassDef(Track, 1) // Track class
231		};
232		}
233
234		//--------------------------------------------------------------------------------------------------
235	+	inline void mithep::Track::GetMom() const
236	+	{
237	+	// Compute three momentum.
238	+
239	+	Double_t pt = TMath::Abs(TMath::Cos(fLambda)/fQOverP);
240	+	Double_t eta = - TMath::Log(TMath::Tan(Theta()/2.));
241	+	fCachedMom.SetCoordinates(pt,eta,Phi());
242	+	}
243	+
244	+	//--------------------------------------------------------------------------------------------------
245	+	inline const mithep::ThreeVectorC &mithep::Track::Mom() const
246	+	{
247	+	// Return cached momentum value.
248	+
249	+	if (!fCacheMomFlag.IsValid()) {
250	+	GetMom();
251	+	fCacheMomFlag.SetValid();
252	+	}
253	+	return fCachedMom;
254	+	}
255	+
256	+	//--------------------------------------------------------------------------------------------------
257	+	inline Double_t mithep::Track::D0Corrected(const BaseVertex &iVertex) const
258	+	{
259	+	// Return corrected d0 with respect to primary vertex or beamspot.
260	+
261	+	Double_t lXM =  -TMath::Sin(Phi()) * D0();
262	+	Double_t lYM =   TMath::Cos(Phi()) * D0();
263	+	Double_t lDX = (lXM + iVertex.X());
264	+	Double_t lDY = (lYM + iVertex.Y());
265	+	Double_t d0Corr = (Px()*lDY - Py()*lDX)/Pt();
266	+
267	+	return d0Corr;
268	+	}
269	+
270	+	//--------------------------------------------------------------------------------------------------
271		inline
272	<	void mithep::Track::SetHelix(Double_t phi, Double_t d0, Double_t pt, Double_t dz, Double_t theta)
272	>	void mithep::Track::SetHelix(Double_t qOverP, Double_t lambda, Double_t phi0,
273	>	Double_t dxy, Double_t dsz)
274		{
275	<	fPhi   = phi;
276	<	fD0    = d0;
277	<	fPt    = pt;
278	<	fDz    = dz;
279	<	fTheta = theta;
275	>	// Set helix parameters.
276	>
277	>	fQOverP = qOverP;
278	>	fLambda = lambda;
279	>	fPhi0   = phi0;
280	>	fDxy    = dxy;
281	>	fDsz    = dsz;
282	>	ClearMom();
283		}
284
285		//--------------------------------------------------------------------------------------------------
286		inline
287	<	void mithep::Track::SetErrors(Double_t phiErr, Double_t d0Err, Double_t ptErr, Double_t dzErr,
288	<	Double_t thetaErr)
287	>	void mithep::Track::SetErrors(Double_t qOverPErr, Double_t lambdaErr, Double_t phi0Err,
288	>	Double_t dxyErr, Double_t dszErr)
289		{
290	<	fPhiErr   = phiErr;
291	<	fD0Err    = d0Err;
292	<	fPtErr    = ptErr;
293	<	fDzErr    = dzErr;
294	<	fThetaErr = thetaErr;
290	>	// Set helix errors.
291	>
292	>	fQOverPErr = qOverPErr;
293	>	fLambdaErr = lambdaErr;
294	>	fPhi0Err   = phi0Err;
295	>	fDxyErr    = dxyErr;
296	>	fDszErr    = dszErr;
297	>	}
298	>
299	>	//--------------------------------------------------------------------------------------------------
300	>	inline
301	>	const mithep::BitMask48 mithep::Track::StereoLayers()
302	>	{
303	>	// Build and return BitMask of stereo layers
304	>
305	>	mithep::BitMask48 stereoLayers;
306	>	stereoLayers.SetBit(mithep::Track::TIB1S);
307	>	stereoLayers.SetBit(mithep::Track::TIB2S);
308	>	stereoLayers.SetBit(mithep::Track::TID1S);
309	>	stereoLayers.SetBit(mithep::Track::TID2S);
310	>	stereoLayers.SetBit(mithep::Track::TID3S);
311	>	stereoLayers.SetBit(mithep::Track::TOB1S);
312	>	stereoLayers.SetBit(mithep::Track::TOB2S);
313	>	stereoLayers.SetBit(mithep::Track::TEC1S);
314	>	stereoLayers.SetBit(mithep::Track::TEC2S);
315	>	stereoLayers.SetBit(mithep::Track::TEC3S);
316	>	stereoLayers.SetBit(mithep::Track::TEC4S);
317	>	stereoLayers.SetBit(mithep::Track::TEC5S);
318	>	stereoLayers.SetBit(mithep::Track::TEC6S);
319	>	stereoLayers.SetBit(mithep::Track::TEC7S);
320	>	stereoLayers.SetBit(mithep::Track::TEC8S);
321	>	stereoLayers.SetBit(mithep::Track::TEC9S);
322	>	return stereoLayers;
323		}
324		#endif

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