besiii analysis software and event data model kanglin he 23 feb, 2006 [email protected]
TRANSCRIPT
Outline
BESIII Analysis Software Analysis Tools -- K.L He Analysis Framework -- X.B Ji Event/Physics Tag -- X.H Mo
BESIII Event Data Model MC Truth Event Data Model -- W.D Li Rec/Dst Event Data Model -- S.P Wen Analysis Event Data Model -- K.L He Physics Event Data Model -- Physics Group
Statistic Analysis Software -- Y.S Zhu Statistical Significance Toy Monte Carlo
PWA and Dalitz Analysis -- H.B Li
Analysis Software
Tools Project (K.L. He) Particle ID Composition Tools
BParticle Project (X. B. Ji) Charged, Neutral Track Selection Ks, Λ, π0/η Reconstruction
Event/Physics Tag Project (X. H. Mo) Event Classification Luminosity Determination Event Collection, filter
Physics Performance Check (X. B. Ji)
Particle ID
DedxPID: dE/dx info Ready now, correction was made
Tof1PID: inner barrel TOF Ready now, correction was made
Tof2PID: outer barrel TOF Ready now, correction was made
TofEPID: Endcap TOF Not readdy now, due to reconstruction
TofQPID: Q of Barrel TOF Not ready now, need detail study on Calibration
EmcPID: energy deposit in EMC Not ready now, Wang Liangliang is working at
ParticleID Combine the above info
MuonID Develop by PKU
ParticleIDBase For developer only
ParticleIDBase class (I) common interface
public: virtual bool IsPidInfoValid() = 0; virtual double chi(int n) const = 0; virtual double prob(int n) const = 0; virtual int ndof() const = 0; DstTrkList* PidTrk() const {return m_trk;} protected:// PID calculation routines(include PID correction) virt
ual int particleIDCalculation() = 0;
Sub-PidSys class design
class Tof1PID : public ParticleIDBase {
public: // constructor & desconstructor Tof1PID(DstTrkList *dstTrk, double chi=4); ~Tof1PID(){;} bool IsPidInfoValid() {return (m_ndof > 0); } double chi(int n) const {return m_chi[n];} double prob(int n) const {return m_prob[n];} int ndof() const {return m_ndof;}protected: int particleIDCalculation(); double offsetTof1(int n, int cntr, double ptrk, double ztof, double ph); double sigmaTof1(int n, int cntr, double ptrk, double ztof, double ph); private: xxxxx;}
How to use ParticleID
// Be careful to avoid memory leakageParticleID *pid = 0; for (int i = 0; i < ncharg; i++) { DstTrkList *dstTrk = *(dstTrkListCol->begin() + i); if(pid) delete pid; pid = new ParticleID(dstTrk); pid->usePidSys(pid->useDedx() | pid->useTof1() | pid->useTof2() )|; // pid->usePidSys(pid->useDedx()); // pid->usePidSys(pid->useTof1()); // pid->usePidSys(pid->useTof2()); pid->identify(pid->onlyPion() | pid->onlyKaon()); // pid->identify(pid->onlyPion()); // pid->identify(pid->onlyKaon()); pid->calculate(); if(!(pid->IsPidInfoValid())) continue; // user's selections } if(pid) delete pid;
Composition Tools
Telesis BESII Kinematic Fit package C++ implemented by SDU
BKlamsVTX BESII Ks, Λ reconstruction package C++ implemented by Dr. B.J. Liu
VertexFit New stuff, by K. L He VertexFit SecondVertexFit KinematicFit
Status of Telesis
Track presentation (φ,κ,λ) for charged track (φ,λ, E) for neutral track
Constraints Resonance Momentum-energy conservation Miss track
Worked smoothly in BOSS
TKinematicFit
#include "Telesis/TKinematicFit.h"
TKinematicFit* kmfit = TKinematicFit::instance();DstMdcTrack *pipTrk=xxx;DstMdcTrack *pimTrk = xxx;DstEmcTrack *g1Trk = xxx;DstEmcTrack *g2Trk = xxx; kmfit->init(ecms);kmfit->AddTrack(1, pipTrk, mpi, 0); kmfit->AddTrack(2, pimTrk, mpi, 0); kmfit->AddTrack(3, g1Trk, 0.0, 0);kmfit->AddTrack(4, g2Trk, 0.0, 0);kmfit->AddResonance(1, 0.135, 3, 4); If(kmfit->fit()) { HepLorentzVector ppip = kmfit->pfit(1); HepLorentzVector ppim = kmfit->pfit(2); HepLorentzVector ppi0 = kmfit->pfit(3) + kmfit->pfit(4); // user code, fill histogram/ntuple}
// see Analysis/Physics/RhopiAlg/RhopiAlg-00-00-02 for detail
Status of BKlamsVTX
Get the point (s) of intersection of two helices in transverse planeCheck if the 2nd vertex candidate is loc
ated in reasonable regionWorked smoothly in BOSS
Analysis/Physics/KlamsTestAlg for detail
Status of Vertex Fit
Formulas (adopt from Paul Avery’s Lessons) Include: VertexFit, KinematicFit and 3-D SecondVertexFi
t Support Composed Particle
Reconstructed π0, η Reconstructed Ks, Λ
Particle and Vertex presentation
W
zyx
V
z)y,x,E,,p,p,(pW
charge
Vx
z)y,(x,
Formulas for Kinematic Fitting
n
2
1
α
α
α
α
n
r
2
r
1
r
n
2
2
2
1
2
n
1
2
1
1
1
α
H
α
H
α
H
α
H
α
H
α
Hα
H
α
H
α
H
D
r
2
1
H
H
H
d
0dD
0λD)α(αV
d)(Dδ2λ)α(αV)α(αχT
01
α
T0
1α
T0
2
0
0
Formulas for Kinematic Fitting (continue)
d)(DδλλVλχ
DVVDVVV
)D(DVV
d)(DδVλ
λDVαα
T1D
T2αD
Tααα
1TαD
D
T1α0
000
0
0
Formulas for Vertex Fitting
DT
xDDD
0D0
D000D
0T
x01
xxT
x0
Tα0
VEEVVVV
d)(DδVλ
xEVλd)xE(DδVλ
λEVδxVVλEVδxδx
λDVδαδα
00
0
d)xE(Dδλχ
EVVDVx),cov(
DVVEEVVDVDVVDVVV
E)VE(VV
00T2
xDT
α
αDT
xDT
ααDT
ααα
1D
T1xx
0
00000
0
Vertex Constraints
Vertex constraint to a fixed position Vertex constraint to an unknown position General Vertex fit Swimming Track parameters and Error matrix to vertex position
2
1
22
hp
)hx)(h(pΔxpasin
a
hphΔx0
)hx(Δx2
ahΔx)(p0
Swimming after VertexFit
xx
BxAαp
)xa(xpp
V
V
00
V
V
VxVV
VVp
α V)p,cov(x
)x,cov(pVV
xx
xVV
Tx
TTTαp
VV
BVx),Acov()x,cov(p
BBV)ABcov(x,x)B,Acov(AAVV
V
V
SecondVertexFit
Find decay vertex position of Ks/Λ through VertexFit
Performing a 2-C fit by applying the alignment constraints
Calculating the decay length and its error
0cτm
pzz
0cτm
pyy
0cτm
pxx
zdp
ydp
xdp
Xp: production position (beam position)Xd: decay position
SecondVertexFit
1D
Tcτ
0T
cτ
T
T0
1α
E)V(EV
λEVδcτ
0dcτEαD
0λE
0λD)δαα(V0
d)cE(Dδ2λ)α(α)Vα(αχ T0
1α0
2
0
d)(Dδλχ
cEVλλ
λDVαα
)D(DVV
d)(DδVλ
0T2
D0
Tα0
1TαD
0D0
0
0
00000 αDT
cτDT
ααDT
ααα DVVEEVVDVDVVDVVV
Build Virtual Particle
Virtual Particle from KinematicFit π0/η,…
Virtual Particle from VertexFit Ks/Λ , …
Can be treated as a normal particle in further kinematic/Vertex fit BuildVirtualParticle(number) in KinematicFit
/ VertexFit
AddTrack Utility
// event data model dependentvoid AddTrack(const int number, const double mass,
const DstMdcTrack *trk); void AddTrack(const int number, const double mass,
const DstMdcKalTrack *trk); void AddTrack(const int number, const double mass,
const DstEmcTrack *trk);// event data model independent void AddTrack(const int number, const WTrackPara
meter wtrk);
Kinematic Constraints Invariant mass constraints
AddResonance(number, mass, n1, n2, ...) Total energy constraints
AddTotalEnergy(number, energy, n1, n2, …) Total Momentum constraints
AddTotalMomentum(number, ptot, n1, n2, …) Total 3-momentum constraints
AddThreeMomentum(number, Hep3Vector p3, n1, n2, …) Total 4-momentum constraints
AddFourMomentum(number, HepLorentzVector p4, n1, n2, …) AddFourMomentum(number, etot, n1, n2, …)
Equal mass constraints AddEqualMass(kmfitAddList(n1, n2, …), kmfitAddList(m1, m2, ….))
How to use compose tools
TKinematicFit *kmfit=TKinematicFit::instance();
VertexFit *vtxfit=VertexFit::instance();
SecondVertexFit *vtxfit = SecondVertexFit::instance();
KinematicFit *kmfit=KinematicFit::instance();
kmfit->init();
// Track and constraints
if(kmfit->Fit()) {//extract kinematic fit information;}
vtxfit->init();
// Track and constraints
if(vtxfit->Fit()) {// extract (Second)VertexFit information;}
Summary of Analysis Tools
Particle ID package Hadron identification by combined TOF and dE/
dx information Muon identification by MuonID Electron identification is not completed
All Composition Tools packaged are worked smoothly and stably in BOSS
Analysis Event Data Flow
MdcTrackCol
MdcKalTrackCol
DedxCol
TofTrackCol
EmcTrackCol
MucTrackCol
ExtTrackCol
Track #1MdcTrack
MdcKalTrackDedx
TofTrackEmcTrackMucTrackExtTrackTrack #2
MdcTrackMdcKalTrack
DedxTofTrackEmcTrackMucTrackExtTrackTrack #...MdcTrack
MdcKalTrackDedx
TofTrackEmcTrackMucTrackExtTrackTrack #NMdcTrack
MdcKalTrackDedx
TofTrackEmcTrackMucTrackExtTrack
BParticle
BTrack
BParticleID
BVertex
BPhotonCol
BElectronCol
BMuonCol
BPionCol
BKaonCol
BProtonCol
BPi0Col
...BKShortCol
BLambaCol
Bhabha Event
Dimu Event
GammaGammaEvent
...
Hadron Event
Tau PairEvent
D0 Tags
D+ Tags
DsTags
...
J/Psi Tags
Other PhysicsTags
Dst EventData Model
Analysis EventData Model
Physics/EventTag
B(es)Particle Project
Write Particle (Charged tracks, neutrals, Vertice and composed particle) information into TDS. Analysis Algorithm can access these info. May develop to a common standard platfor
m, make Analysis job easily and friendly Allow Physics groups to design Physics Dat
a model easily
Contents BParticle Collection
Event Analysis Event Data Model BParticleID Collection
Particle identification data BTrack Collection
Charged and Neutral Track infomation data BVertex Collection
(2nd)Vertex Reconstruction data BStableParticle Collection
Photon, Electron, Muon, Pion, Kaon, Proton BComposedParticle Collection
π0,η,Ks,Λ etc
B(es)Particle Project
BParticleCol
BVertexBTrackColBParticleID
BComposedParticle
BKShortCol
BLambdaCol
BPi0Col
BEtaCol
BPhotonCol
BElectronCol
BMuonCol
BPionCol
BKaonCol
BProtonCol
Event/Physics Tags Project
Event Classification Bhabha/Dimu/Hadron/etc.
Luminosity Determination Bhabha/Dimu/Di-photon
Physics Tags Charm Meson Tags (D0, D+, Ds)
J.Y Zhang, Y.Z Sun, S.S Sun, M. Yang are working on J/Ψ tags (Ψ’ππJ/Ψ)
X.H Mo, Li Gang are working on Other Physics Tags
Event Collection/Filter (Y.Z Sun and Framework Team) Event Collection Filter: sub-sets of data containing selected tags
Statistic Analysis
Statistic Significance Up Limit determination Systematic Uncertainties Theory Toy Monte Carlo
Event Data Model
MC Truth information Monte Carlo Generator & Simulation
Dst Event Data Model Reconstruction
Truth Match MC track Rec/Dst track
Analysis Event Data Model BParticle project
Physics Event Data Model Defined by Physics/Working Group
Histograms, ntuples Root, paw……
MC Truth Data Model
Generator McParticle So on Kinematic and vertex inf
o
Simulation MdcMcHit TofMcHit EmcMcHit MucMcHit
Please see
Event/McTruth/ subdirectoryFor detail
Dst Event Data Model
DstMdcTrack DstMdcKalTrack DstDedx DstTofTrack DstEmcTrack DstMucTrack DstExtTrack
Please see
Event/DstEvent subdirctoryFor detail
DstMdcTrack
int trackID() int charge() Double helix(int i) Double pxy() Double px() Double py() Double pz() Double p() Double theta() Double phi()
Double x() Double y() Double z() Double r() Int stat() Double chi2() Int ndof() Double rms() Double err(int i) Int nhits() Int nster()
How to use DstMdcTrack#include “Event/DstMdcTrack.h”
MsgStream log(msgSvc(), name()); SmartDataPtr<DstMdcTrackCol> mdcCol(eventSvc(), EventModel::Dst::DstMdcTrackCol);If(!mdcCol) return StatusCode::SUCCESS;DstMdcTrackCol::iterator it = mdcColbegin();for( ; it < mdcColend() ; it++) {
//px, py, pzlog<<MSG::INFO<<“px, py, pz = “ <<(*it)px() <<“ , “ // px<<(*it)py() <<“ , “ // py<<(*it)pz() << endreq; // pz// x, y, z, rlog<<MSG::INFO<<“ x0, y0, z0, rxy = “
<< (*it)x() << “ , “ // x0<<(*it)y() << “ , “ // y0<<(*it)z() << “ , “ // z0<<(*it)r() << endreq; // rxy
}
Global Link
MDC reconstruction dE/dx, Kalman fit track
Match to TOF and Muon counter Track Applying Track Extrapolatio
information, done in Reconstruction
Match to EMC Position difference of extTrk
and emc Track, treat as Neutral tracks if not matched
See Wang L.L ‘s talk for detail
Dst Track List Collection
trackID() MdcTrk() DstMdcTrack MdcKalTrk() DstMdcKalTrack Dedx() DstDedx TofTrk() DstTofTrack EmcTrk() DstEmcTrack MucTrk() DstMucTrack ExtTrk() DstExtTrack
Access sub-detector info through a set of pointers
TrackList (track level)int trackID() const {return m_trackID;}
bool IsMdcTrkValid() {return (m_originMdcTrack != 0);} bool IsMdcKalTrkValid() {return (m_originMdcKalTrack != 0);} bool IsDedxValid() {return (m_originDedx != 0);} bool IsTofTrkValid() {return (m_originTofTrack != 0);}bool IsEmcTrkValid() {return (m_originEmcTrack != 0);} bool IsMucTrkValid() {return (m_originMucTrack != 0);} bool IsExtTrkValid() {return (m_originExtTrack != 0);}
DstMdcTrack* MdcTrk() {return m_originMdcTrack;} DstMdcKalTrack* MdcKalTrk() {return m_originMdcKalTrack;} DstDedx* DedxTrk() {return m_originDedx;} DstTofTrack* TofTrk() {return m_originTofTrack;} DstEmcTrack* EmcTrk() {return m_originEmcTrack;} DstMucTrack* MucTrk() {return m_originMucTrack;}
DstExtTrack* ExtTrk() {return m_originExtTrack;}
How to access Dst Event Data
In analysis source code:
#include “Event/DstTrkList.h”SmartDataPtr<DstTrkListCol> dstCol ( eventSvc(), EventModel::Dst::DstTrac
kListCol)// To get Energy deposit in EmcDstTrkListCol::iterater itTrk = dstColbegin() For(; itTrk < dstColend(); itTrk++) { if((*itTrk)IsEmcTrkValid()) { DstEmcTrack *emcTrk = (*itTrk)EmcTrk();
double energy = emcTrkenergy(); // piece of analysis code, fill histogram/ntuple
} }
In analysis job option file: #include “$DSTEVENTASSEMBLYALGROOT/jobOptions_DstEventAssembly.txt”
MC Truth Track Association
Match MC truth track & Reconstructed Track Dubna group is working on MDC track part is ready now
EventNavigator PackageDocumentation in BES3 Software Web Page
Analysis Event Data Model
BParticle Collection Event Analysis Event Data Model
BParticleID Collection Particle identification data
BTrack Collection Charged and Neutral Track infomation data
BVertex Collection (2nd)Vertex Reconstruction data
BStableParticle Collection Photon, Electron, Muon, Pion, Kaon, Proton
BComposedParticle Collection π0,η,Ks,Λ etc
BParticle Collection// track List IDint m_trackID;// PDG ID int m_particleID;// reference point(0, 0, 0)HepPoint3D m_refpoint; // WTrackparameters(charge, px, py, pz, e, x, y, z)WTrackParameter m_wtrk; SmartRef<DstTrkList> m_dstTrk; // Dst TrackList SmartRef<BParticleID> m_pid; // ParticleID infoSmartRef<BVertex> m_vertex; // Vertex infoSmartRef<BComposeParticle> m_bcompart; // ComposeParticleSmartRef<BParticle> m_mother; // motherSmartRefVector<BParticle> m_daughters; //decay daughters
BParticleID Collection
int m_trackID; // TrackList IDint m_type; // 1: electron 2: muon 3: pi/K/pint m_ndof;double m_chiDedx[5];double m_chiTof1[5];double m_chiTof2[5];double m_chiTofE[5];double m_chiTofQ[5];double m_chiEmc[5];double m_prob[5];double m_chisq[5];
BVertex Collection
int m_vertexID;VertexType m_vertexType;VertexParameter m_vpar;double m_chisq;int m_ndof;WTrackParameter m_wtrk;double m_lxyz;double m_lxyz_err;SmartRefVector<BParticle> m_outgo;
BTrack Collection
bool isNeutral(); bool isCharged(); bool isGoodTrack(); bool isPhoton(); bool isDaughter(); bool isUnknown();
bool isElectron(); bool isMuon(); bool isPion(); bool isKaon(); bool isProton();
Selection Criteria controlled by job option file
BParticle in Analysis
#include “BParticle/BParticle.h”#include “BParticle/BParticleID.h”#include “BParticle/BVertex.h”#include “BParticle/StableParticle.h”#include “BParticle/BComposedParticle.h”// get pion ListsSmartDataPtr<BPionCol> pionCol(eventSvc(), EventModel::Analysis::BPionCol);// get Kaon ListsSmartDataPtr<BKaonCol> kaonCol(eventSvc(), EventModel::Analysis::BKaonCol);// get Photon ListsSmartDataPtr<BPhotonCol> photonCol(eventSvc(), EventModel::Analysis::BPhotonCol);//get KShort ListsSmartDataPtr<BKShortCol> ksCol(eventSvc(),EventModel::Analysis::BKShortCol);//get pi0 ListsSmartDataPtr<BPi0Col> pi0Col(eventSvc(), EventModel::Analysis::BPi0Col);
//DO not forget to add following line in your job option file#include “$PARTICLESELECTIONALGROOT/share/jobOPtions_ParticleSelection.txt”
BParticleTestAlg
Package: Analysis/Physics/BParticleTestAlg Contents Inclusive Photon Inclusive J/Psi Inclusive phi/omega/K* Inclusive pi0/eta Inclusive Ks/Lambda
Job option file #include “BPARTICLETESTALGROOT”/share/joboption
s_BParticleTestAlg.txt
Physics Event Data Model
BCharmMeson Collection D0 K pi, K pi pi0, K pi pi pi, …
D+ Ks pi, K pi pi, K pi pi pi0, …
Ds Phi pi, K*K, K0K, …
BJPsi Collection J/Psimu+ mu- J/Psie+ e- Psi’ pi pi J/Psi
Designed by Physics Group
Histogram and Ntuples
Root data format HBOOK data format Both are supported by Gaudi
ROOTPAW
Analysis Environment
Versions Rec/Cal/Anal/MC/DAQ/…
DAQ/Trigger Mode Cosmic Collision Separate Beam run
Event Type Bhabha/Dimu/diphoton Calibration event Physics event …
Run Status Good/Bad/Usable
Run Parameters Beam parameters Luminosity Magnetic Field …
Data Correction Constants PID (TOF, dE/dx, Emc, Muc) Momentum correction factor …
Analysis Demo Analysis/Physics/RhopiAlg
RhopiAlg-00-00-02 TKinematicFit > 00-00-02 KinematicFit
Analysis/Physics/KlamsTestAlg BKlamsVTX
Analysis/Physics/BParticleTestAlg Analysis Event Data Model
Analysis/AnalysisDemoAlg Dst Event Data Model Analysis/Physics/JPsi/KstarKAlg J/Psi Physics Analysis/Physics/PsiPrime/G2MuMuAlg Psi’ Physics Analysis/Physics/CharmMeson/ Charm Physics Analysis/Physics/TauPair/ Tau Physics Analysis/Physics/RValue/ R Physics Analysis/Physics/TwoPhoton/ TwoPhoton Physics
Physics Performance Check
Charged Track Hadron Performance (X.B Ji’s talk) MuonID Performance (PKU)
Photon(π0/η ) performance M.S Chen’s talk
Decay Vertex Reconstruction B.J Liu’s talk
J/Ψ,Ψ’, D/Ds Analysis X.H Mo, X.B Ji, J.Y Zhang ‘s talks
Energy threshold at 40MeV
GeV
Eff
icie
ncie
s(10
0%)
Photon detection Efficiencies as a function of E
20MeV30MeV
40MeV50MeV
60MeV70MeV
From Li H.B
ρπJ/ψ
M
M
ρπJ/ψ
No 4C fit
After 4C fit
γγπ0
γγπ0
From Li H B
M
γγπ0
50 K
Inc
lusi
ve Ψ
” M
C d
ata
~3MeV
~1.2MeV
ππKS
pπ
50 K
Inc
lusi
ve Ψ
” M
C d
ata
KKφ
0πππω
50 K
Inc
lusi
ve Ψ
” M
C d
ata
50K
Inc
lusi
ve Ψ
” M
C d
ata
KπK*0
πKK S*
From Y.Z Sun
πKD0 πππKD0
π
00 ππKD ππKD S
0
From J. Y Zhang
0S ππKD
πKD S
πππKD S
ππKD
J/ψππψ
recM
From Li Gang
50K inclusive Ψ’ MC data
Inclusive photon Energy
0cχ
1cχ2
cχ
γJ/ψχ1,2c
E
μμJ/ψ
Cheers and Thank you !!!
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