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Holds information about track parameters. More...
#include <StPicoTrack.h>
Public Types | |
| enum | { eTopologyMap = 2 } |
Public Member Functions | |
| StPicoTrack () | |
| Default constructor. | |
| StPicoTrack (const StPicoTrack &track) | |
| Copy constructor. | |
| virtual | ~StPicoTrack () |
| Destructor. | |
| virtual void | Print (const Char_t *option="") const |
| Print track parameters. | |
| Int_t | id () const |
| Return unique Id of the track. | |
| Float_t | chi2 () const |
| Return chi2 of the track. | |
| TVector3 | pMom () const |
| Return momentum (GeV/c) of the primary track. Return (0,0,0) if not primary track. | |
| TVector3 | gMom () const |
| Return momentum (GeV/c) of the global tracks at the point of DCA to the primary vertex. | |
| TVector3 | origin () const |
| Return space coordinate (cm) of DCA to the primary vertex. | |
| Float_t | gPt () const |
| Return global tranverse momentum (GeV/c) | |
| Float_t | gPtot () const |
| Return global total momentum (GeV/c) | |
| Float_t | pPt () const |
| Return transverse momentum (GeV/c) of the primary track. | |
| Float_t | pPtot () const |
| Return total momentum (GeV/c) of the primary track. | |
| TVector3 | gMom (TVector3 pVtx, Float_t B) const |
| Global momentum at point of DCA to pVtx, B should be in kilogauss. | |
| StPicoPhysicalHelix | helix (Float_t const B) const |
| Helix at point of DCA to StPicoEvent::mPrimaryVertex. | |
| Float_t | gDCAx (Float_t pVtxX) const |
| Return signed distance in x direction (cm) between the value and x position of the DCA point (gDCAx - x) | |
| Float_t | gDCAy (Float_t pVtxY) const |
| Return signed distance in y direction between the value and y position of the DCA point (gDCAy - y) | |
| Float_t | gDCAz (Float_t pVtxZ) const |
| Return signed distance in z direction (cm) between the value and z position of the DCA point (gDCAz - z) | |
| Float_t | gDCAxy (Float_t pVtxX, Float_t pVtxY) const |
| Return distance in xy direction (cm) between the (x,y) point and the DCA point to primary vertex. | |
| Float_t | gDCA (Float_t pVtxX, Float_t pVtxY, Float_t pVtxZ) const |
| Return distance in xyz direction (cm) between the (x,y,z) point and the DCA point to primary vertex. | |
| TVector3 | gDCA (TVector3 pVtx) const |
| Return 3-vector (distance) between the DCA point and the point (gDCA - point) | |
| Float_t | gDCAs (TVector3 pVtx) const |
| Short_t | charge () const |
| Return charge of the track (encoded in nHitsFit as: nHitsFit * charge) | |
| Int_t | nHits () const |
| Return number of hits. | |
| Int_t | nHitsFit () const |
| Return number of hits fit. | |
| Int_t | nHitsMax () const |
| Return number of hits possible. | |
| Int_t | nHitsPoss () const |
| Return number of hits possible. | |
| Int_t | nHitsDedx () const |
| Return number of hits used for dE/dx measurement. | |
| UInt_t | hftHitsMap () const |
| Return a map of hits in HFT. | |
| Float_t | dEdx () const |
| Return dE/dx (in keV/cm) of the track. | |
| Float_t | dEdxError () const |
| Return dE/dx error of the track (in GeV/cm) | |
| Float_t | dNdx () const |
| Return dN/dx of the track. | |
| Float_t | dNdxError () const |
| Return dN/dx error of the track. | |
| Char_t | status () const |
| Return if the track was fitted to any vertex (0 - not fitted, 1 - fitted) | |
| Float_t | nSigmaPion () const |
| Return nSigma(pion) | |
| Float_t | nSigmaKaon () const |
| Return nSigma(kaon) | |
| Float_t | nSigmaProton () const |
| Return nSigma(proton) | |
| Float_t | nSigmaElectron () const |
| Return nSigma(electron) | |
| UInt_t | topologyMap (UInt_t idx) const |
| Return track topology map (return 0 in case when requested index is >1) | |
| ULong64_t | iTpcTopologyMap () const |
| Return topology map for iTPC. | |
| Bool_t | hasPxl1Hit () const |
| Return if the track has an inner PXL hit. | |
| Bool_t | hasPxl2Hit () const |
| Return if the track has an outer PXL hit. | |
| Bool_t | hasIstHit () const |
| Return if the track has an IST hit. | |
| Bool_t | hasSstHit () const |
| Return if the track has an inner SST hit. | |
| Bool_t | isHft () const |
| Return if trach has hit in HFT. | |
| Bool_t | isHFTTrack () const |
| Return if trach has hit in HFT. | |
| Bool_t | hasHft4Layers () const |
| Return if track has hits in all 4 layers of silicon. | |
| Bool_t | isTofTrack () const |
| Return if track has TOF hit. | |
| Bool_t | isBemcTrack () const |
| Return if track has BEMC hit. | |
| Bool_t | isMtdTrack () const |
| Return if track has MTD hit. | |
| Bool_t | isETofTrack () const |
| Return if track has ETOF hit. | |
| Bool_t | isBemcMatchedTrack () const |
| Checks if track matches any BEMC tower. | |
| Bool_t | isPrimary () const |
| Return if track is primary. | |
| Int_t | bemcPidTraitsIndex () const |
| Return index to the corresponding BEMC PID trait. | |
| Int_t | bTofPidTraitsIndex () const |
| Return index to the corresponding BTOF PID trait. | |
| Int_t | mtdPidTraitsIndex () const |
| Return index to the corresponding MTD PID trait. | |
| Int_t | eTofPidTraitsIndex () const |
| Return index to the corresponding ETOF PID trait. | |
| Int_t | bemcTowerIndex () const |
| Bool_t | isBemcMatchedExact () const |
| Int_t | idTruth () const |
| Index of the corresponding MC track. | |
| Int_t | qaTruth () const |
| Qualtiy of the MC track. | |
| Int_t | vertexIndex () const |
| Return parent vertex index (-2 if not fitted to any vertex) | |
| void | setId (Int_t id) |
| Set track ID. | |
| void | setChi2 (Float_t chi2) |
| Set chi2 of the track. | |
| void | setPrimaryMomentum (Double_t px, Double_t py, Double_t pz) |
| Set momentum of the primary track. | |
| void | setPrimaryMomentum (Float_t px, Float_t py, Float_t pz) |
| Set momentum of the primary track. | |
| void | setPrimaryMomentum (TVector3 mom) |
| Set momentum of the primary track. | |
| void | setGlobalMomentum (Double_t px, Double_t py, Double_t pz) |
| Set momentum of the global track. | |
| void | setGlobalMomentum (Float_t px, Float_t py, Float_t pz) |
| Set momentum of the global track. | |
| void | setGlobalMomentum (TVector3 mom) |
| Set momentum of the global track. | |
| void | setOrigin (Double_t x, Double_t y, Double_t z) |
| Set origin of the track (DCA point to the primary vertex) | |
| void | setOrigin (Float_t x, Float_t y, Float_t z) |
| Set origin of the track (DCA point to the primary vertex) | |
| void | setOrigin (TVector3 orig) |
| Set origin of the track (DCA point to the primary vertex) | |
| void | setDedx (Float_t dEdx) |
| Set dE/dx of the track. | |
| void | setDedxError (Float_t dEdxError) |
| Set dE/dx error of the track. | |
| void | setDndx (Float_t dNdx) |
| Set dN/dx of the track. | |
| void | setDndxError (Float_t dNdxError) |
| Set dN/dx error of the track. | |
| void | setStatus (Char_t k=0) |
| Set status of the track (0 - not fitted to any vertex, 1 - fitted to a vertex) | |
| void | setNHitsFit (Int_t nhits) |
| Set nHitsFit ( charge * nHitsFit ) | |
| void | setNHitsPossible (Int_t nhits) |
| Set nHitsPoss. | |
| void | setNHitsMax (Int_t nhits) |
| Set nHitsPoss. | |
| void | setNHitsDedx (Int_t nhits) |
| Set nHitsDedx. | |
| void | setNSigmaPion (Float_t ns) |
| Set nSigma(pion) | |
| void | setNSigmaKaon (Float_t ns) |
| Set nSigma(kaon) | |
| void | setNSigmaProton (Float_t ns) |
| Set nSigma(proton) | |
| void | setNSigmaElectron (Float_t ns) |
| Set nSigma(electron) | |
| void | setTopologyMap (Int_t id, UInt_t word) |
| Set topology map (2 words) | |
| void | setiTpcTopologyMap (ULong64_t map) |
| Set iTPC topology map. | |
| void | setBEmcPidTraitsIndex (Int_t index) |
| Set index to BEMC PID traits. | |
| void | setBTofPidTraitsIndex (Int_t index) |
| Set index to BTOF PID traits. | |
| void | setMtdPidTraitsIndex (Int_t index) |
| Set index to MTD PID traits. | |
| void | setETofPidTraitsIndex (Int_t index) |
| Set index to ETOF PID traits. | |
| void | setBEmcMatchedTowerIndex (Int_t index) |
| Set index of the BEMC tower that matches the track. | |
| void | setMcTruth (Int_t index, Int_t qa) |
| Set index of the corresonding MC track. | |
| void | setVertexIndex (Int_t index) |
| Set vertex index to which the track was fitted. | |
Protected Attributes | |
| UShort_t | mId |
| Unique track ID. | |
| UShort_t | mChi2 |
| Chi2 of the track (encoding = chi2*1000) | |
| Float_t | mPMomentumX |
| Px momentum (GeV/c) of the primary track ( 0 if not primary ) | |
| Float_t | mPMomentumY |
| Py momentum (GeV/c) of the primary track ( 0 if not primary ) | |
| Float_t | mPMomentumZ |
| Pz momentum (GeV/c) of the primary track ( 0 if not primary ) | |
| Float_t | mGMomentumX |
| Px component of the momentum (GeV/c) of the global track at DCA to primary vertex. | |
| Float_t | mGMomentumY |
| Py component of the momentum (GeV/c) of the global track at DCA to primary vertex. | |
| Float_t | mGMomentumZ |
| Pz component of the momentum (GeV/c) of the global track at DCA to primary vertex. | |
| Float_t | mOriginX |
| Track origin x (DCAx to the primary vertex) in cm. | |
| Float_t | mOriginY |
| Track origin y (DCAy to the primary vertex) in cm. | |
| Float_t | mOriginZ |
| Track origin z (DCAy to the primary vertex) in cm. | |
| Float16_t | mDedx |
| dE/dx in KeV/cm (dE/dx * 1e6) | |
| Float16_t | mDedxError |
| dE/dx error (in GeV/cm) | |
| Float_t | mDnDx |
| Fitted dN/dx. | |
| Float_t | mDnDxError |
| Fitted dN/dx error. | |
| Char_t | mNHitsFit |
| Charge * nHitsFit. | |
| UChar_t | mNHitsMax |
| Possible number of hits (in TPC) | |
| UChar_t | mNHitsDedx |
| Number of hits used for dE/dx estimation (in TPC) | |
| Short_t | mNSigmaPion |
| nSigma(pion) (encoding = nsigma * 1000) | |
| Short_t | mNSigmaKaon |
| nSigma(kaon) (encoding = nsigma * 1000) | |
| Short_t | mNSigmaProton |
| nSigma(proton) (encoding = nsigma * 1000) | |
| Short_t | mNSigmaElectron |
| nSigma(electron) (encoding = nsigma * 1000) | |
| UInt_t | mTopologyMap [eTopologyMap] |
| Toplogy Map data0 and data1. See StEvent/StTrackTopologyMap.cxx. | |
| Short_t | mBEmcPidTraitsIndex |
| Index of the BEMC pidTratis in the event. | |
| Short_t | mBTofPidTraitsIndex |
| Index of the BTOF pidTratis in the event. | |
| Short_t | mMtdPidTraitsIndex |
| Index of the MTD pidTratis in the event. | |
| Short_t | mETofPidTraitsIndex |
| Index of the ETOF pidTratis in the event. | |
| Short_t | mBEmcMatchedTowerIndex |
| ULong64_t | mTopoMap_iTpc |
| Topology map for the iTPC. | |
| Char_t | mStatus |
| UShort_t | mIdTruth |
| MC track id. | |
| UShort_t | mQATruth |
| MC track quality (percentage of hits coming from corresponding MC track) | |
| Char_t | mVertexIndex |
| Parent vertex index. -2 if no vertex. | |
Holds information about track parameters.
The class stores information about the tracks reconstructed in TPC
Definition at line 35 of file StPicoTrack.h.
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Return index of the BEMC tower index that was matched with the track. The indexing scheme was chosen so that towers with an exact match are stored with the softid (1, 4800), towers with an close match are stored as -softid (-1, -4800), and towers without a match are stored as 0. Therefore, returning abs(mBEmcMatchedTowerIndex) - 1 will return the array index of the proper tower for matched tracks, and return -1 for unmatched tracks Indices start from 0 and go up to 4799 in order have the trivial access to StPicoBTowHit array.
Definition at line 198 of file StPicoTrack.h.
References mBEmcMatchedTowerIndex.
| Float_t StPicoTrack::gDCAs | ( | TVector3 | pVtx | ) | const |
Return signed DCA of global track to the primary vertex
The values can be estimated only for tracks (with non-zero momentum) that have primary partners. In other case -999 value will be returned.
Definition at line 414 of file StPicoTrack.cxx.
References gDCA(), gMom(), and isPrimary().
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If true, the track was found in the material between towers, not in a scintillating pad
Definition at line 201 of file StPicoTrack.h.
References mBEmcMatchedTowerIndex.
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Index of the BEMC-matched tower. The indexing scheme was chosen so that towers with an exact match are stored with the softid (1, 4800), towers with an close match are stored as -softid (-1, -4800), and towers without a match are stored as 0.
Definition at line 358 of file StPicoTrack.h.
Referenced by bemcTowerIndex(), isBemcMatchedExact(), isBemcMatchedTrack(), and setBEmcMatchedTowerIndex().
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Checks if the track was fitted to any vertex
Definition at line 368 of file StPicoTrack.h.
Referenced by setStatus(), status(), and StPicoTrack().
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