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Description of all classes used to store output data (momentum units are GeV, position units are mm).

Parameter Definition How it was calculated
class Event
Number event number
ReadTime read time
ProcTime processing time
class LHCOEvent
Event LHCOEvent inherits all Event parameters
Trigger trigger word
class LHEFEvent
Event LHEFEvent inherits all Event parameters
ProcessID subprocess code for the event hepup.IDPRUP
Weight weight for the event hepup.XWGTUP
ScalePDF scale in GeV used in the calculation of the PDFs in the event hepup.SCALUP
AlphaQED value of the QED coupling used in the event hepup.AQEDUP
AlphaQCD value of the QCD coupling used in the event hepup.AQCDUP
class LHEFWeight
ID weight ID
Weight weight value
class HepMCEvent
Event HepMCEvent inherits all Event parameters
ProcessID unique signal process id signal_process_id()
MPI number of multi parton interactions mpi ()
Weight weight for the event
Scale energy scale, see hep-ph/0109068 event_scale()
AlphaQED QED coupling, see hep-ph/0109068 alphaQED()
AlphaQCD QCD coupling, see hep-ph/0109068 alphaQCD()
ID1 flavour code of first parton pdf_info()->id1()
ID2 flavour code of second parton pdf_info()->id2()
X1 fraction of beam momentum carried by first parton ("beam side") pdf_info()->x1()
X2 fraction of beam momentum carried by second parton ("target side") pdf_info()->x2()
ScalePDF Q-scale used in evaluation of PDF's (in GeV) pdf_info()->scalePDF()
PDF1 PDF (id1, x1, Q) pdf_info()->pdf1()
PDF2 PDF (id2, x2, Q) pdf_info()->pdf2()
class GenParticle
PID particle HEP ID number hepevt.idhep[number]
Status particle status hepevt.isthep[number]
IsPU 0 or 1 for particles from pile-up interactions
M1 particle 1st mother hepevt.jmohep[number][0] - 1
M2 particle 2nd mother hepevt.jmohep[number][1] - 1
D1 particle 1st daughter hepevt.jdahep[number][0] - 1
D2 particle last daughter hepevt.jdahep[number][1] - 1
Charge particle charge
Mass particle mass
E particle energy hepevt.phep[number][3]
Px particle momentum vector (x component) hepevt.phep[number][0]
Py particle momentum vector (y component) hepevt.phep[number][1]
Pz particle momentum vector (z component) hepevt.phep[number][2]
P particle momentum
PT particle transverse momentum
Eta particle pseudorapidity
Phi particle azimuthal angle
Rapidity particle rapidity
CtgTheta particle cotangent of theta
D0 particle transverse impact parameter
DZ particle longitudinal impact parameter
T particle vertex position (t component) hepevt.vhep[number][3]
X particle vertex position (x component) hepevt.vhep[number][0]
Y particle vertex position (y component) hepevt.vhep[number][1]
Z particle vertex position (z component) hepevt.vhep[number][2]
class Vertex
T vertex position (t component)
X vertex position (x component)
Y vertex position (y component)
Z vertex position (z component)
ErrorT vertex position error (t component)
ErrorX vertex position error (x component)
ErrorY vertex position error (y component)
ErrorZ vertex position error (z component)
Index vertex index
NDF number of degrees of freedom
Sigma vertex position (z component) error
SumPT2 sum pt^2 of tracks attached to the vertex
GenSumPT2 sum pt^2 of gen tracks attached to the vertex
GenDeltaZ distance in z to closest generated vertex
BTVSumPT2 sum pt^2 of tracks attached to the secondary vertex
Constituents references to constituents
class MissingET
MET mising transverse energy
Eta mising energy pseudorapidity
Phi mising energy azimuthal angle
class ScalarHT
HT scalar sum of transverse momenta
class Rho
Rho rho energy density
Edges[2] pseudorapidity range edges
class Weight
Weight weight for the event
class Photon
PT photon transverse momentum
Eta photon pseudorapidity
Phi photon azimuthal angle
E photon energy
T particle arrival time of flight
EhadOverEem ratio of the hadronic versus electromagnetic energy deposited in the calorimeter
Particles references to generated particles
IsolationVar isolation variable
IsolationVarRhoCorr isolation variable
SumPtCharged isolation variable
SumPtNeutral isolation variable
SumPtChargedPU isolation variable
SumPt isolation variable
class Electron
PT electron transverse momentum
Eta electron pseudorapidity
Phi electron azimuthal angle
T particle arrival time of flight
Charge electron charge
EhadOverEem ratio of the hadronic versus electromagnetic energy deposited in the calorimeter
Particle reference to generated particle
IsolationVar isolation variable
IsolationVarRhoCorr isolation variable
SumPtCharged isolation variable
SumPtNeutral isolation variable
SumPtChargedPU isolation variable
SumPt isolation variable
class Muon
PT muon transverse momentum
Eta muon pseudorapidity
Phi muon azimuthal angle
T particle arrival time of flight
Charge muon charge
Particle reference to generated particle
IsolationVar isolation variable
IsolationVarRhoCorr isolation variable
SumPtCharged isolation variable
SumPtNeutral isolation variable
SumPtChargedPU isolation variable
SumPt isolation variable
class Jet
PT jet transverse momentum
Eta jet pseudorapidity
Phi jet azimuthal angle
Mass jet invariant mass
Flavor jet flavor
FlavorAlgo jet flavor
FlavorPhys jet flavor
BTag 0 or 1 for a jet that has been tagged as containing a heavy quark
BTagAlgo 0 or 1 for a jet that has been tagged as containing a heavy quark
BTagPhys 0 or 1 for a jet that has been tagged as containing a heavy quark
TauTag 0 or 1 for a jet that has been tagged as a tau
Charge tau charge
EhadOverEem ratio of the hadronic versus electromagnetic energy deposited in the calorimeter
NCharged number of charged constituents
NNeutrals number of neutral constituents
Beta (sum pt of charged pile-up constituents)/(sum pt of charged constituents)
BetaStar (sum pt of charged constituents coming from hard interaction)/(sum pt of charged constituents)
MeanSqDeltaR average distance (squared) between constituent and jet weighted by pt (squared) of constituent
PTD average pt between constituent and jet weighted by pt of constituent
FracPt[5] (sum pt of constituents within a ring 0.1*i < DeltaR < 0.1*(i+1))/(sum pt of constituents)
Tau[5] N-subjettiness
TrimmedP4[5] first entry (i = 0) is the total Trimmed Jet 4-momenta and from i = 1 to 4 are the trimmed subjets 4-momenta
PrunedP4[5] first entry (i = 0) is the total Pruned Jet 4-momenta and from i = 1 to 4 are the pruned subjets 4-momenta
SoftDroppedP4[5] first entry (i = 0) is the total SoftDropped Jet 4-momenta and from i = 1 to 4 are the pruned subjets 4-momenta
NSubJetsTrimmed number of subjets trimmed
NSubJetsPruned number of subjets pruned
NSubJetsSoftDropped number of subjets soft-dropped
Constituents references to constituents
Particles references to generated particles
class Track
PID HEP ID number
Charge track charge
P track momentum
PT track transverse momentum
Eta track pseudorapidity
Phi track azimuthal angle
CtgTheta track cotangent of theta
EtaOuter track pseudorapidity at the tracker edge
PhiOuter track azimuthal angle at the tracker edge
T track vertex position (t component)
X track vertex position (x component)
Y track vertex position (y component)
Z track vertex position (z component)
TOuter track position (t component) at the tracker edge
XOuter track position (x component) at the tracker edge
YOuter track position (y component) at the tracker edge
ZOuter track position (z component) at the tracker edge
Xd X coordinate of point of closest approach to vertex
Yd Y coordinate of point of closest approach to vertex
Zd Z coordinate of point of closest approach to vertex
L track path length
D0 track transverse impact parameter
DZ track longitudinal impact parameter
ErrorP track momentum error
ErrorPT track transverse momentum error
ErrorPhi track azimuthal angle error
ErrorCtgTheta track cotangent of theta error
ErrorT time measurement error
ErrorD0 track transverse impact parameter error
ErrorDZ track longitudinal impact parameter error
Particle reference to generated particle
VertexIndex reference to vertex
class Tower
ET calorimeter tower transverse energy
Eta calorimeter tower pseudorapidity
Phi calorimeter tower azimuthal angle
E calorimeter tower energy
T ecal deposit time, averaged by sqrt(EM energy) over all particles, not smeared
NTimeHits number of hits contributing to time measurement
Eem calorimeter tower electromagnetic energy
Ehad calorimeter tower hadronic energy
Edges[4] calorimeter tower edges
Particles references to generated particles
class HectorHit
E reconstructed energy [GeV]
Tx angle of the momentum in the horizontal (x,z) plane [urad]
Ty angle of the momentum in the verical (y,z) plane [urad]
T time of flight to the detector [s]
X horizontal distance to the beam [um]
Y vertical distance to the beam [um]
S distance to the interaction point [m]
Particle reference to generated particle
Last modified 18 months ago Last modified on 06/15/18 16:29:26