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Revision: 1.54
Committed: Wed Mar 28 12:15:34 2012 UTC (13 years, 1 month ago) by paus
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# User Rev Content
1 loizides 1.1 //--------------------------------------------------------------------------------------------------
2 paus 1.54 // $Id: Track.h,v 1.53 2010/07/01 15:05:15 bendavid Exp $
3 loizides 1.1 //
4     // Track
5     //
6 bendavid 1.15 // 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 loizides 1.18 // (See http://cmslxr.fnal.gov/lxr/source/DataFormats/TrackReco/interface/TrackBase.h)
16 bendavid 1.15 //
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 bendavid 1.25 // (TIB L1,L2, TID L1,L2,L3, TOB L1,L2, TEC L1,L2,L3,L4,L5,L6,L7,L8,L9).
23 bendavid 1.15 //
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 loizides 1.16 // but muon chamber information will likely be added as well.
28 bendavid 1.15 //
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 loizides 1.16 // Bit 11: TID L1 r-phi
42 bendavid 1.15 // Bit 12: TID L1 stereo
43 loizides 1.16 // Bit 13: TID L2 r-phi
44 bendavid 1.15 // Bit 14: TID L2 stereo
45 loizides 1.16 // Bit 15: TID L3 r-phi
46 bendavid 1.23 // 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 loizides 1.1 //
74 loizides 1.5 // Authors: C.Loizides, J.Bendavid, C.Paus
75 loizides 1.1 //--------------------------------------------------------------------------------------------------
76 loizides 1.7
77 loizides 1.17 #ifndef MITANA_DATATREE_TRACK_H
78     #define MITANA_DATATREE_TRACK_H
79 paus 1.6
80 loizides 1.36 #include "MitAna/DataCont/interface/BitMask.h"
81 bendavid 1.47 #include "MitAna/DataTree/interface/TrackQuality.h"
82 loizides 1.35 #include "MitAna/DataTree/interface/BaseVertex.h"
83 paus 1.6 #include "MitAna/DataTree/interface/DataObject.h"
84 loizides 1.35 #include "MitAna/DataTree/interface/MCParticle.h"
85 bendavid 1.27 #include "MitAna/DataTree/interface/SuperCluster.h"
86 loizides 1.1
87     namespace mithep
88     {
89     class Track : public DataObject
90     {
91     public:
92 loizides 1.18 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 bendavid 1.23 TID3S,
110 loizides 1.18 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 bendavid 1.23 TEC3S,
124 loizides 1.18 TEC4,
125 bendavid 1.23 TEC4S,
126 loizides 1.18 TEC5,
127     TEC5S,
128     TEC6,
129 bendavid 1.23 TEC6S,
130 loizides 1.18 TEC7,
131 bendavid 1.23 TEC7S,
132 loizides 1.18 TEC8,
133 bendavid 1.23 TEC8S,
134     TEC9,
135     TEC9S
136 loizides 1.18 };
137    
138 loizides 1.44 enum ETrackAlgorithm { //taken from DataFormats/TrackReco/interface/TrackBase.h
139 bendavid 1.43 undefAlgorithm=0,
140     ctf=1,
141     rs=2,
142     cosmics=3,
143     iter0=4,
144     iter1=5,
145     iter2=6,
146     iter3=7,
147     iter4=8,
148     iter5=9,
149     iter6=10,
150     iter7=11,
151     iter8=12,
152     iter9=13,
153     iter10=14,
154     outInEcalSeededConv=15,
155     inOutEcalSeededConv=16,
156     nuclInter=17,
157     standAloneMuon=18,
158     globalMuon=19,
159     cosmicStandAloneMuon=20,
160     cosmicGlobalMuon=21,
161     iter1LargeD0=22,
162     iter2LargeD0=23,
163     iter3LargeD0=24,
164     iter4LargeD0=25,
165     iter5LargeD0=26,
166     bTagGhostTracks=27,
167     beamhalo=28,
168     algoSize=29
169     };
170    
171    
172 bendavid 1.52 Track() : fNHits(0), fNPixelHits(0), fNMissingHits(0), fNExpectedHitsInner(0), fNExpectedHitsOuter(0),
173     fAlgo(undefAlgorithm), fIsGsf(0), fPtErr(0), fQOverP(0), fQOverPErr(0),
174 bendavid 1.43 fLambda(0), fLambdaErr(0), fPhi0(0), fPhi0Err(0),
175     fDxy(0), fDxyErr(0), fDsz(0), fDszErr(0), fChi2(0),
176     fNdof(0), fEtaEcal(0), fPhiEcal(0) {}
177 bendavid 1.15 Track(Double_t qOverP, Double_t lambda, Double_t phi0, Double_t dxy, Double_t dsz) :
178 bendavid 1.53 fNHits(0), fNPixelHits(0), fNMissingHits(0), fNExpectedHitsInner(0), fNExpectedHitsOuter(0),
179     fAlgo(undefAlgorithm), fIsGsf(0), fPtErr(0), fQOverP(qOverP), fQOverPErr(0),
180     fLambda(lambda), fLambdaErr(0), fPhi0(phi0), fPhi0Err(0),
181     fDxy(dxy), fDxyErr(0), fDsz(dsz), fDszErr(0), fChi2(0),
182 bendavid 1.43 fNdof(0), fEtaEcal(0), fPhiEcal(0) {}
183 loizides 1.1 ~Track() {}
184    
185 bendavid 1.43 ETrackAlgorithm Algo() const { return fAlgo; }
186 loizides 1.34 Int_t Charge() const { return (fQOverP>0) ? 1 : -1; }
187     Double_t Chi2() const { return fChi2; }
188     void ClearHit(EHitLayer l) { fHits.ClearBit(l); }
189     Double_t D0() const { return -fDxy; }
190     Double_t D0Corrected(const BaseVertex &iVertex) const;
191 bendavid 1.49 Double_t DzCorrected(const BaseVertex &iVertex) const;
192 loizides 1.34 Double_t D0Err() const { return fDxyErr; }
193     Double_t Dsz() const { return fDsz; }
194     Double_t DszErr() const { return fDszErr; }
195     Double_t Dxy() const { return fDxy; }
196     Double_t DxyErr() const { return fDxyErr; }
197     Double_t E(Double_t m) const { return TMath::Sqrt(E2(m)); }
198     Double_t E2(Double_t m) const { return P2()+m*m; }
199     Double_t Eta() const { return Mom().Eta(); }
200     Double_t EtaEcal() const { return fEtaEcal; }
201     Bool_t Hit(EHitLayer l) const { return fHits.TestBit(l); }
202     const BitMask48 &Hits() const { return fHits; }
203 bendavid 1.48 const BitMask48 &MissingHits() const { return fMissingHits; }
204     const BitMask48 &ExpectedHitsInner() const { return fExpectedHitsInner; }
205     const BitMask48 &ExpectedHitsOuter() const { return fExpectedHitsOuter; }
206 bendavid 1.43 Bool_t IsGsf() const { return fIsGsf; }
207 loizides 1.34 Double_t Lambda() const { return fLambda; }
208     Double_t LambdaErr() const { return fLambdaErr; }
209     const MCParticle *MCPart() const { return fMCParticleRef.Obj(); }
210     const ThreeVectorC &Mom() const;
211 pharris 1.41 FourVectorM Mom4(Double_t m) const { return FourVectorM(Pt(),Eta(),Phi(),m); }
212 loizides 1.38 UShort_t Ndof() const { return fNdof; }
213 bendavid 1.52 UInt_t NHits() const { if (fNHits) return fNHits; else return fHits.NBitsSet(); }
214     UInt_t NMissingHits() const { if (fNMissingHits) return fNMissingHits; else return fMissingHits.NBitsSet(); }
215     UInt_t NExpectedHitsInner() const { if (fNExpectedHitsInner) return fNExpectedHitsInner; else return fExpectedHitsInner.NBitsSet(); }
216     UInt_t NExpectedHitsOuter() const { if (fNExpectedHitsOuter) return fNExpectedHitsOuter; else return fExpectedHitsOuter.NBitsSet(); }
217 loizides 1.34 UInt_t NStereoHits() const { return StereoHits().NBitsSet(); }
218 bendavid 1.52 UInt_t NPixelHits() const { if (fNPixelHits) return fNPixelHits; else return PixelHits().NBitsSet(); }
219 loizides 1.34 EObjType ObjType() const { return kTrack; }
220     Double_t P2() const { return 1./fQOverP/fQOverP; }
221     Double_t P() const { return TMath::Abs(1./fQOverP); }
222     Double_t Phi() const { return fPhi0; }
223     Double_t Phi0() const { return fPhi0; }
224     Double_t Phi0Err() const { return fPhi0Err; }
225     Double_t PhiEcal() const { return fPhiEcal; }
226     Double_t Prob() const { return TMath::Prob(fChi2,fNdof); }
227     Double_t Pt() const { return Mom().Rho(); }
228 bendavid 1.50 Double_t PtErr() const { return fPtErr; }
229 loizides 1.34 Double_t Px() const { return Mom().X(); }
230     Double_t Py() const { return Mom().Y(); }
231     Double_t Pz() const { return Mom().Z(); }
232     Double_t QOverP() const { return fQOverP; }
233     Double_t QOverPErr() const { return fQOverPErr; }
234 loizides 1.37 Double_t RChi2() const { return fChi2/(Double_t)fNdof; }
235 loizides 1.34 Double_t Theta() const { return (TMath::PiOver2() - fLambda); }
236     const SuperCluster *SCluster() const { return fSuperClusterRef.Obj(); }
237 bendavid 1.45 const BitMask48 PixelHits() const { return (fHits & PixelLayers()); }
238 bendavid 1.47 const TrackQuality &Quality() const { return fQuality; }
239     TrackQuality &Quality() { return fQuality; }
240 loizides 1.34 const BitMask48 StereoHits() const { return (fHits & StereoLayers()); }
241 bendavid 1.43 void SetAlgo(ETrackAlgorithm e) { fAlgo = e; }
242 loizides 1.34 void SetChi2(Double_t chi2) { fChi2 = chi2; }
243     void SetErrors(Double_t qOverPErr, Double_t lambdaErr, Double_t phi0Err,
244     Double_t dXyErr, Double_t dSzErr);
245     void SetEtaEcal(Double_t eta) { fEtaEcal = eta; }
246     void SetHelix (Double_t qOverP, Double_t lambda, Double_t phi0,
247     Double_t dXy, Double_t dSz);
248 bendavid 1.50 void SetPtErr(Double_t ptErr) { fPtErr = ptErr; }
249 loizides 1.34 void SetHit(EHitLayer l) { fHits.SetBit(l); }
250     void SetHits(const BitMask48 &hits) { fHits = hits; }
251 bendavid 1.48 void SetMissingHits(const BitMask48 &h) { fMissingHits = h; }
252     void SetExpectedHitsInner(const BitMask48 &h) { fExpectedHitsInner = h; }
253 bendavid 1.51 void SetExpectedHitsOuter(const BitMask48 &h) { fExpectedHitsOuter = h; }
254 bendavid 1.43 void SetIsGsf(Bool_t b) { fIsGsf = b; }
255 bendavid 1.52 void SetNHits(Byte_t n) { fNHits = n; }
256     void SetNPixelHits(Byte_t n) { fNPixelHits = n; }
257     void SetNMissingHits(Byte_t n) { fNMissingHits = n; }
258     void SetNExpectedHitsInner(Byte_t n) { fNExpectedHitsInner = n; }
259     void SetNExpectedHitsOuter(Byte_t n) { fNExpectedHitsOuter = n; }
260 loizides 1.38 void SetNdof(UShort_t dof) { fNdof = dof; }
261 loizides 1.34 void SetMCPart(const MCParticle *p) { fMCParticleRef = p; }
262     void SetPhiEcal(Double_t phi) { fPhiEcal = phi; }
263     void SetSCluster(const SuperCluster* sc) { fSuperClusterRef = sc; }
264 bendavid 1.49 Double_t X0() const { return D0()*TMath::Sin(Phi()); }
265     Double_t Y0() const { return -D0()*TMath::Cos(Phi()); }
266 loizides 1.37 Double_t Z0() const { return fDsz/TMath::Cos(fLambda); }
267 loizides 1.30
268 bendavid 1.45
269     static const BitMask48 StereoLayers();
270     static const BitMask48 PixelLayers();
271 loizides 1.18
272 paus 1.54 // Some structural tools
273     void Mark() const;
274    
275 paus 1.4 protected:
276 loizides 1.34 void ClearMom() const { fCacheMomFlag.ClearCache(); }
277     void GetMom() const;
278    
279     BitMask48 fHits; //storage for mostly hit information
280 bendavid 1.48 BitMask48 fMissingHits; //missing hits in crossed good modules
281     BitMask48 fExpectedHitsInner; //expected hits before first hit
282     BitMask48 fExpectedHitsOuter; //expected hits after last hit
283 bendavid 1.52 Byte_t fNHits; //number of valid hits
284     Byte_t fNPixelHits; //number of valid pixel hits
285     Byte_t fNMissingHits; //number of missing hits
286     Byte_t fNExpectedHitsInner; //number of expected inner hits
287     Byte_t fNExpectedHitsOuter; //number of expected outer hits
288 bendavid 1.43 ETrackAlgorithm fAlgo; //track algorithm
289 bendavid 1.47 TrackQuality fQuality; //track quality
290 bendavid 1.43 Bool_t fIsGsf; //flag to identify gsf tracks
291 bendavid 1.50 Double32_t fPtErr; //[0,0,12]pt uncertainty
292 loizides 1.38 Double32_t fQOverP; //[0,0,14]signed inverse of momentum [1/GeV]
293     Double32_t fQOverPErr; //[0,0,14]error of q/p
294     Double32_t fLambda; //[0,0,14]pi/2 - polar angle at the reference point
295     Double32_t fLambdaErr; //[0,0,14]error of lambda
296     Double32_t fPhi0; //[0,0,14]azimuth angle at the given point
297     Double32_t fPhi0Err; //[0,0,14]error of azimuthal angle
298     Double32_t fDxy; //[0,0,14]trans. distance to reference point [cm]
299     Double32_t fDxyErr; //[0,0,14]error of transverse distance
300     Double32_t fDsz; //[0,0,14]long. distance to reference point [cm]
301     Double32_t fDszErr; //[0,0,14]error of longitudinal distance
302     Double32_t fChi2; //[0,0,12]chi squared of track fit
303     UShort_t fNdof; //degree-of-freedom of track fit
304 loizides 1.40 Double32_t fEtaEcal; //[0,0,12]eta of track at Ecal front face
305     Double32_t fPhiEcal; //[0,0,12]phi of track at Ecal front face
306 loizides 1.34 Ref<SuperCluster> fSuperClusterRef; //superCluster crossed by track
307     Ref<MCParticle> fMCParticleRef; //reference to sim particle (for monte carlo)
308     mutable CacheFlag fCacheMomFlag; //||cache validity flag for momentum
309     mutable ThreeVectorC fCachedMom; //!cached momentum vector
310 loizides 1.5
311 bendavid 1.52 ClassDef(Track, 6) // Track class
312 loizides 1.1 };
313 loizides 1.5 }
314 loizides 1.1
315 loizides 1.5 //--------------------------------------------------------------------------------------------------
316 paus 1.54 inline void mithep::Track::Mark() const
317     {
318     // mark myself
319     mithep::DataObject::Mark();
320     // mark my dependencies if they are there
321     if (fSuperClusterRef.IsValid())
322     fSuperClusterRef.Obj()->Mark();
323     if (fMCParticleRef.IsValid())
324     fMCParticleRef.Obj()->Mark();
325     }
326    
327     //--------------------------------------------------------------------------------------------------
328 loizides 1.34 inline void mithep::Track::GetMom() const
329     {
330     // Compute three momentum.
331    
332     Double_t pt = TMath::Abs(TMath::Cos(fLambda)/fQOverP);
333     Double_t eta = - TMath::Log(TMath::Tan(Theta()/2.));
334     fCachedMom.SetCoordinates(pt,eta,Phi());
335     }
336    
337     //--------------------------------------------------------------------------------------------------
338     inline const mithep::ThreeVectorC &mithep::Track::Mom() const
339     {
340     // Return cached momentum value.
341    
342     if (!fCacheMomFlag.IsValid()) {
343     GetMom();
344     fCacheMomFlag.SetValid();
345     }
346     return fCachedMom;
347     }
348    
349     //--------------------------------------------------------------------------------------------------
350     inline Double_t mithep::Track::D0Corrected(const BaseVertex &iVertex) const
351 bendavid 1.28 {
352 loizides 1.30 // Return corrected d0 with respect to primary vertex or beamspot.
353 bendavid 1.28
354     Double_t lXM = -TMath::Sin(Phi()) * D0();
355     Double_t lYM = TMath::Cos(Phi()) * D0();
356 loizides 1.34 Double_t lDX = (lXM + iVertex.X());
357     Double_t lDY = (lYM + iVertex.Y());
358 bendavid 1.28 Double_t d0Corr = (Px()*lDY - Py()*lDX)/Pt();
359    
360     return d0Corr;
361     }
362    
363     //--------------------------------------------------------------------------------------------------
364 bendavid 1.49 inline Double_t mithep::Track::DzCorrected(const mithep::BaseVertex &iVertex) const
365     {
366     // Compute Dxy with respect to a given position
367     mithep::ThreeVector momPerp(Px(),Py(),0);
368     mithep::ThreeVector posPerp(X0()-iVertex.X(),Y0()-iVertex.Y(),0);
369     return Z0() - iVertex.Z() - posPerp.Dot(momPerp)/Pt() * (Pz()/Pt());
370    
371     }
372    
373     //--------------------------------------------------------------------------------------------------
374 loizides 1.44 inline void mithep::Track::SetHelix(Double_t qOverP, Double_t lambda, Double_t phi0,
375     Double_t dxy, Double_t dsz)
376 loizides 1.5 {
377 loizides 1.13 // Set helix parameters.
378    
379 bendavid 1.15 fQOverP = qOverP;
380     fLambda = lambda;
381     fPhi0 = phi0;
382     fDxy = dxy;
383     fDsz = dsz;
384 loizides 1.34 ClearMom();
385 paus 1.4 }
386    
387 loizides 1.5 //--------------------------------------------------------------------------------------------------
388 loizides 1.44 inline void mithep::Track::SetErrors(Double_t qOverPErr, Double_t lambdaErr, Double_t phi0Err,
389     Double_t dxyErr, Double_t dszErr)
390 loizides 1.5 {
391 loizides 1.13 // Set helix errors.
392    
393 bendavid 1.15 fQOverPErr = qOverPErr;
394     fLambdaErr = lambdaErr;
395     fPhi0Err = phi0Err;
396     fDxyErr = dxyErr;
397     fDszErr = dszErr;
398 paus 1.4 }
399 loizides 1.13
400     //--------------------------------------------------------------------------------------------------
401 loizides 1.44 inline const mithep::BitMask48 mithep::Track::StereoLayers()
402 bendavid 1.26 {
403 loizides 1.35 // Build and return BitMask of stereo layers.
404 bendavid 1.26
405     mithep::BitMask48 stereoLayers;
406     stereoLayers.SetBit(mithep::Track::TIB1S);
407     stereoLayers.SetBit(mithep::Track::TIB2S);
408     stereoLayers.SetBit(mithep::Track::TID1S);
409     stereoLayers.SetBit(mithep::Track::TID2S);
410     stereoLayers.SetBit(mithep::Track::TID3S);
411     stereoLayers.SetBit(mithep::Track::TOB1S);
412     stereoLayers.SetBit(mithep::Track::TOB2S);
413     stereoLayers.SetBit(mithep::Track::TEC1S);
414     stereoLayers.SetBit(mithep::Track::TEC2S);
415     stereoLayers.SetBit(mithep::Track::TEC3S);
416     stereoLayers.SetBit(mithep::Track::TEC4S);
417     stereoLayers.SetBit(mithep::Track::TEC5S);
418     stereoLayers.SetBit(mithep::Track::TEC6S);
419     stereoLayers.SetBit(mithep::Track::TEC7S);
420     stereoLayers.SetBit(mithep::Track::TEC8S);
421     stereoLayers.SetBit(mithep::Track::TEC9S);
422     return stereoLayers;
423     }
424 bendavid 1.45
425     //--------------------------------------------------------------------------------------------------
426     inline const mithep::BitMask48 mithep::Track::PixelLayers()
427     {
428     // Build and return BitMask of stereo layers.
429    
430     mithep::BitMask48 pixelLayers;
431     pixelLayers.SetBit(mithep::Track::PXB1);
432     pixelLayers.SetBit(mithep::Track::PXB2);
433     pixelLayers.SetBit(mithep::Track::PXB3);
434     pixelLayers.SetBit(mithep::Track::PXF1);
435     pixelLayers.SetBit(mithep::Track::PXF2);
436     return pixelLayers;
437     }
438 loizides 1.5 #endif