| Revision: | 1.6 |
| Committed: | Mon Jan 18 14:41:34 2010 UTC (15 years, 3 months ago) by bendavid |
| Content type: | text/plain |
| Branch: | MAIN |
| CVS Tags: | Mit_032, Mit_031, Mit_025c_branch2, Mit_025c_branch1, Mit_030, Mit_029c, Mit_029b, Mit_030_pre1, Mit_029a, Mit_029, Mit_029_pre1, Mit_028a, Mit_025c_branch0, Mit_028, Mit_027a, Mit_027, Mit_026, Mit_025e, Mit_025d, Mit_025c, Mit_025b, Mit_025a, Mit_025, Mit_025pre2, Mit_024b, Mit_025pre1, Mit_024a, Mit_024, Mit_023, Mit_022a, Mit_022, Mit_020d, TMit_020d, Mit_020c, Mit_021, Mit_021pre2, Mit_021pre1, Mit_020b, Mit_020a, Mit_020, Mit_020pre1, Mit_018, Mit_017, Mit_017pre3, Mit_017pre2, Mit_017pre1, V07-05-00, Mit_016, Mit_015b, Mit_015a, Mit_015, Mit_014e, Mit_014d, Mit_014c, Mit_014b, ConvRejection-10-06-09, Mit_014a, Mit_014, Mit_014pre3, Mit_014pre2, Mit_014pre1, Mit_013d, Mit_013c, Mit_013b, Mit_013a, Mit_013, Mit_013pre1, Mit_012i, HEAD |
| Branch point for: | Mit_025c_branch |
| Changes since 1.5: | +3 -1 lines |
| Log Message: | Fix Track Paramater phi-related bugs and add consistent propagation to origin |
| # | User | Rev | Content |
|---|---|---|---|
| 1 | loizides | 1.2 | //-------------------------------------------------------------------------------------------------- |
| 2 | bendavid | 1.6 | // $Id: TrackParameters.h,v 1.5 2009/03/20 17:13:34 loizides Exp $ |
| 3 | paus | 1.1 | // |
| 4 | // Description: class TrackParameters | ||
| 5 | // | ||
| 6 | // Class to manage track parameters of different conventions and convert one into the other. This is | ||
| 7 | // not really done very well and could be done more efficient but this is what it is for the moment. | ||
| 8 | // | ||
| 9 | // Original Author: Christoph Paus | ||
| 10 | // Created: Thu Aug 21 02:29:00 CEST 2008 | ||
| 11 | // | ||
| 12 | // ------------------------------------------------------------------------------------------------- | ||
| 13 | // CMS parameter ordering for the vector/matrix, which is assumed here: | ||
| 14 | // | ||
| 15 | // qoverp, lambda, phi0, dxy, dsz; (lambda = pi/2 - theta) | ||
| 16 | // mapping to CDF is therefore { 1*, 0*, 4, 3, 2* }, where * indicates that a transformation is | ||
| 17 | // needed | ||
| 18 | // | ||
| 19 | // Note that the radius of curvature (in cm) is then: | ||
| 20 | // | ||
| 21 | // Rc = cos(theta) / [ 0.0029979.... * (q/p) * B ], | ||
| 22 | // | ||
| 23 | // where B is the magnetic field in Tesla and tht is the angle between the field and the | ||
| 24 | // direction. With p * cos(theta) = pT it follows: | ||
| 25 | // | ||
| 26 | // Rc = pT / [ 0.0029979.... * q * B ], | ||
| 27 | // fullCurvature = 1 / Rc = 0.0029979 * q * B / pT = - 0.0029979 * B / pT. | ||
| 28 | // | ||
| 29 | // see the conventions for the MultiVertexFitter in its own header file. | ||
| 30 | loizides | 1.2 | // |
| 31 | // Author: C.Paus | ||
| 32 | //-------------------------------------------------------------------------------------------------- | ||
| 33 | paus | 1.1 | |
| 34 | loizides | 1.3 | #ifndef MITEDM_VERTEXFITINTERFACE_TRACKPARAMETERS_H |
| 35 | #define MITEDM_VERTEXFITINTERFACE_TRACKPARAMETERS_H | ||
| 36 | paus | 1.1 | |
| 37 | loizides | 1.3 | #include <TMatrixDSym.h> |
| 38 | #include <TVectorD.h> | ||
| 39 | paus | 1.1 | #include "DataFormats/TrackReco/interface/Track.h" |
| 40 | bendavid | 1.6 | #include "TrackingTools/TransientTrack/interface/TransientTrack.h" |
| 41 | paus | 1.1 | |
| 42 | namespace mitedm | ||
| 43 | { | ||
| 44 | loizides | 1.4 | enum TrackConvention { // Define existing track parameter conventions |
| 45 | iCms, | ||
| 46 | iMvf | ||
| 47 | }; | ||
| 48 | paus | 1.1 | |
| 49 | // Declare the track parameter class | ||
| 50 | class TrackParameters | ||
| 51 | { | ||
| 52 | public: | ||
| 53 | TrackParameters() {} | ||
| 54 | bendavid | 1.6 | TrackParameters(const reco::TransientTrack &ttrk, TrackConvention tcv = iCms); |
| 55 | loizides | 1.4 | TrackParameters(const reco::Track *trk, TrackConvention tcv = iCms, double bField = 3.8); |
| 56 | paus | 1.1 | TrackParameters(const TrackParameters &trk); |
| 57 | ~TrackParameters() {}; | ||
| 58 | |||
| 59 | // Access the specific contents | ||
| 60 | loizides | 1.4 | const TVectorD *pars() const { return &pars_; }; |
| 61 | double pars(int i) const { return pars_[i]; }; | ||
| 62 | const TMatrixDSym *cMat() const { return &cMat_; }; | ||
| 63 | double cMat(int i, int j) const { return cMat_(i,j); }; | ||
| 64 | paus | 1.1 | |
| 65 | // Access the different parametrizations independently of the local storage | ||
| 66 | TrackParameters cmsTrack() const; | ||
| 67 | TrackParameters mvfTrack() const; | ||
| 68 | |||
| 69 | loizides | 1.4 | void setPars(int i, double v) { pars_(i) = v; } |
| 70 | void setCMat(int i, int j, double v) { cMat_(i,j) = v; } | ||
| 71 | void addCMat(int i, int j, double v) { cMat_(i,j) += v; } | ||
| 72 | paus | 1.1 | |
| 73 | // Utilities | ||
| 74 | loizides | 1.4 | void print() const; |
| 75 | paus | 1.1 | |
| 76 | private: | ||
| 77 | loizides | 1.4 | TrackConvention iConvention_; //track parameter convention (def. CMS) |
| 78 | double bField_; //magnetic field in Tesla | ||
| 79 | double fCurv_; //combined curvature constant | ||
| 80 | TVectorD pars_; //track paramters (helix) | ||
| 81 | TMatrixDSym cMat_; //corresponding covariance matrix (sig_i * sig_j) | ||
| 82 | paus | 1.1 | }; |
| 83 | } | ||
| 84 | #endif |