| 1 |
//--------------------------------------------------------------------------------------------------
|
| 2 |
// $Id: Track.h,v 1.23 2008/10/16 16:13:23 bendavid Exp $
|
| 3 |
//
|
| 4 |
// Track
|
| 5 |
//
|
| 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, TOB L1,L2, TEC L1,L2,L5).
|
| 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 MITANA_DATATREE_TRACK_H
|
| 78 |
#define MITANA_DATATREE_TRACK_H
|
| 79 |
|
| 80 |
#include "MitAna/DataTree/interface/DataObject.h"
|
| 81 |
#include "MitAna/DataTree/interface/MCParticle.h"
|
| 82 |
#include "MitAna/DataTree/interface/BitMask.h"
|
| 83 |
#include "MitAna/DataTree/interface/Types.h"
|
| 84 |
|
| 85 |
namespace mithep
|
| 86 |
{
|
| 87 |
class Track : public DataObject
|
| 88 |
{
|
| 89 |
public:
|
| 90 |
enum EHitLayer {
|
| 91 |
PXB1,
|
| 92 |
PXB2,
|
| 93 |
PXB3,
|
| 94 |
PXF1,
|
| 95 |
PXF2,
|
| 96 |
TIB1,
|
| 97 |
TIB1S,
|
| 98 |
TIB2,
|
| 99 |
TIB2S,
|
| 100 |
TIB3,
|
| 101 |
TIB4,
|
| 102 |
TID1,
|
| 103 |
TID1S,
|
| 104 |
TID2,
|
| 105 |
TID2S,
|
| 106 |
TID3,
|
| 107 |
TID3S,
|
| 108 |
TOB1,
|
| 109 |
TOB1S,
|
| 110 |
TOB2,
|
| 111 |
TOB2S,
|
| 112 |
TOB3,
|
| 113 |
TOB4,
|
| 114 |
TOB5,
|
| 115 |
TOB6,
|
| 116 |
TEC1,
|
| 117 |
TEC1S,
|
| 118 |
TEC2,
|
| 119 |
TEC2S,
|
| 120 |
TEC3,
|
| 121 |
TEC3S,
|
| 122 |
TEC4,
|
| 123 |
TEC4S,
|
| 124 |
TEC5,
|
| 125 |
TEC5S,
|
| 126 |
TEC6,
|
| 127 |
TEC6S,
|
| 128 |
TEC7,
|
| 129 |
TEC7S,
|
| 130 |
TEC8,
|
| 131 |
TEC8S,
|
| 132 |
TEC9,
|
| 133 |
TEC9S
|
| 134 |
};
|
| 135 |
|
| 136 |
Track() : fQOverP(0), fQOverPErr(0), fLambda(0), fLambdaErr(0),
|
| 137 |
fPhi0(0), fPhi0Err(0), fDxy(0), fDxyErr(0), fDsz(0), fDszErr(0),
|
| 138 |
fChi2(0), fNdof(0) {}
|
| 139 |
Track(Double_t qOverP, Double_t lambda, Double_t phi0, Double_t dxy, Double_t dsz) :
|
| 140 |
fQOverP(qOverP), fQOverPErr(0), fLambda(lambda), fLambdaErr(0),
|
| 141 |
fPhi0(phi0), fPhi0Err(0), fDxy(dxy), fDxyErr(0), fDsz(dsz), fDszErr(0),
|
| 142 |
fChi2(0), fNdof(0) {}
|
| 143 |
~Track() {}
|
| 144 |
|
| 145 |
Int_t Charge() const { return (fQOverP>0) ? 1 : -1; }
|
| 146 |
Double_t Chi2() const { return fChi2; }
|
| 147 |
Double_t RChi2() const { return fChi2/(Double_t)fNdof; }
|
| 148 |
void ClearHit(EHitLayer l) { fHits.ClearBit(l); }
|
| 149 |
Double_t D0() const { return -fDxy; }
|
| 150 |
Double_t D0Err() const { return fDxyErr; }
|
| 151 |
Double_t Dsz() const { return fDsz; }
|
| 152 |
Double_t DszErr() const { return fDszErr; }
|
| 153 |
Double_t Dxy() const { return fDxy; }
|
| 154 |
Double_t DxyErr() const { return fDxyErr; }
|
| 155 |
Double_t E(Double_t m) const { return TMath::Sqrt(E2(m)); }
|
| 156 |
Double_t E2(Double_t m) const { return P2()+m*m; }
|
| 157 |
Double_t Eta() const { return Mom().Eta(); }
|
| 158 |
Bool_t Hit(EHitLayer l) const { return fHits.TestBit(l); }
|
| 159 |
const BitMask64 &Hits() const { return fHits; }
|
| 160 |
Double_t Lambda() const { return fLambda; }
|
| 161 |
Double_t LambdaErr() const { return fLambdaErr; }
|
| 162 |
const MCParticle *MCPart() const;
|
| 163 |
ThreeVector Mom() const { return ThreeVector(Px(),Py(),Pz()); }
|
| 164 |
FourVector Mom4(Double_t m) const { return FourVector(Px(),Py(),Pz(),E(m)); }
|
| 165 |
UInt_t Ndof() const { return fNdof; }
|
| 166 |
UInt_t NHits() const { return fHits.NBitsSet(); }
|
| 167 |
UInt_t NStereoHits() const { return StereoHits().NBitsSet(); }
|
| 168 |
Double_t P2() const { return P()*P(); }
|
| 169 |
Double_t P() const { return TMath::Abs(1./fQOverP); }
|
| 170 |
Double_t Phi() const { return fPhi0; }
|
| 171 |
Double_t Phi0() const { return fPhi0; }
|
| 172 |
Double_t Phi0Err() const { return fPhi0Err; }
|
| 173 |
Double_t Prob() const { return TMath::Prob(fChi2,fNdof); }
|
| 174 |
Double_t Pt() const { return TMath::Abs(TMath::Cos(fLambda)/fQOverP); }
|
| 175 |
Double_t Px() const { return Pt()*TMath::Cos(fPhi0); }
|
| 176 |
Double_t Py() const { return Pt()*TMath::Sin(fPhi0); }
|
| 177 |
Double_t Pz() const { return P()*TMath::Sin(fLambda); }
|
| 178 |
Double_t QOverP() const { return fQOverP; }
|
| 179 |
Double_t QOverPErr() const { return fQOverPErr; }
|
| 180 |
Double_t Theta() const { return (TMath::PiOver2() - fLambda); }
|
| 181 |
Double_t Z0() const { return fDsz/TMath::Cos(fLambda); }
|
| 182 |
void SetChi2(Double_t chi2) { fChi2 = chi2; }
|
| 183 |
void SetErrors(Double_t qOverPErr, Double_t lambdaErr, Double_t phi0Err,
|
| 184 |
Double_t dXyErr, Double_t dSzErr);
|
| 185 |
void SetHelix (Double_t qOverP, Double_t lambda, Double_t phi0,
|
| 186 |
Double_t dXy, Double_t dSz);
|
| 187 |
void SetHit(EHitLayer l) { fHits.SetBit(l); }
|
| 188 |
void SetHits(const BitMask64 &hits) { fHits = hits; }
|
| 189 |
void SetNdof(UInt_t dof) { fNdof = dof; }
|
| 190 |
void SetMCPart(MCParticle *p) { fMCParticleRef = p; }
|
| 191 |
const BitMask64 StereoHits() const { return (fHits & StereoLayers()); }
|
| 192 |
static BitMask64 StereoLayers() { return BitMask64(Long64_t(0x55554155140LL)); }
|
| 193 |
|
| 194 |
protected:
|
| 195 |
BitMask64 fHits; //storage for mostly hit information
|
| 196 |
Double_t fQOverP; //signed inverse of momentum [1/GeV]
|
| 197 |
Double_t fQOverPErr; //error of q/p
|
| 198 |
Double_t fLambda; //pi/2 - polar angle at the reference point
|
| 199 |
Double_t fLambdaErr; //error of lambda
|
| 200 |
Double_t fPhi0; //azimuth angle at the given point
|
| 201 |
Double_t fPhi0Err; //error of azimuthal angle
|
| 202 |
Double_t fDxy; //transverse distance to reference point [cm]
|
| 203 |
Double_t fDxyErr; //error of transverse distance
|
| 204 |
Double_t fDsz; //longitudinal distance to reference point [cm]
|
| 205 |
Double_t fDszErr; //error of longitudinal distance
|
| 206 |
Double_t fChi2; //chi squared of track fit
|
| 207 |
UInt_t fNdof; //degree-of-freedom of track fit
|
| 208 |
TRef fMCParticleRef; //reference to sim particle (for monte carlo)
|
| 209 |
|
| 210 |
ClassDef(Track, 1) // Track class
|
| 211 |
};
|
| 212 |
}
|
| 213 |
|
| 214 |
//--------------------------------------------------------------------------------------------------
|
| 215 |
inline
|
| 216 |
void mithep::Track::SetHelix(Double_t qOverP, Double_t lambda, Double_t phi0,
|
| 217 |
Double_t dxy, Double_t dsz)
|
| 218 |
{
|
| 219 |
// Set helix parameters.
|
| 220 |
|
| 221 |
fQOverP = qOverP;
|
| 222 |
fLambda = lambda;
|
| 223 |
fPhi0 = phi0;
|
| 224 |
fDxy = dxy;
|
| 225 |
fDsz = dsz;
|
| 226 |
}
|
| 227 |
|
| 228 |
//--------------------------------------------------------------------------------------------------
|
| 229 |
inline
|
| 230 |
void mithep::Track::SetErrors(Double_t qOverPErr, Double_t lambdaErr, Double_t phi0Err,
|
| 231 |
Double_t dxyErr, Double_t dszErr)
|
| 232 |
{
|
| 233 |
// Set helix errors.
|
| 234 |
|
| 235 |
fQOverPErr = qOverPErr;
|
| 236 |
fLambdaErr = lambdaErr;
|
| 237 |
fPhi0Err = phi0Err;
|
| 238 |
fDxyErr = dxyErr;
|
| 239 |
fDszErr = dszErr;
|
| 240 |
}
|
| 241 |
|
| 242 |
//--------------------------------------------------------------------------------------------------
|
| 243 |
inline
|
| 244 |
const mithep::MCParticle *mithep::Track::MCPart() const
|
| 245 |
{
|
| 246 |
// Get reference to simulated particle.
|
| 247 |
|
| 248 |
return static_cast<const MCParticle*>(fMCParticleRef.GetObject());
|
| 249 |
}
|
| 250 |
#endif
|
