Parameter |
Definition |
How it was calculated |
Event
|
Number |
event number |
|
LHCOEvent
|
Event |
LHCOEvent inherits all Event parameters |
|
Trigger |
trigger word |
|
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 |
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() |
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] |
PT |
particle transverse momentum |
|
Eta |
particle pseudorapidity |
|
Phi |
particle azimuthal angle |
|
Rapidity |
particle rapidity |
|
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] |
Vertex
|
T |
vertex position (t component) |
|
X |
vertex position (x component) |
|
Y |
vertex position (y component) |
|
Z |
vertex position (z component) |
|
MissingET
|
MET |
mising transverse energy |
|
Eta |
mising energy pseudorapidity |
|
Phi |
mising energy azimuthal angle |
|
ScalarHT
|
HT |
scalar sum of transverse momenta |
|
Rho
|
Rho |
rho energy density |
|
Edges[2] |
pseudorapidity range edges |
|
Weight
|
Weight |
weight for the event |
|
Photon
|
PT |
photon transverse momentum |
|
Eta |
photon pseudorapidity |
|
Phi |
photon azimuthal angle |
|
E |
photon energy |
|
EhadOverEem |
ratio of the hadronic versus electromagnetic energy deposited in the calorimeter |
|
Particles |
references to generated particles |
|
Electron
|
PT |
electron transverse momentum |
|
Eta |
electron pseudorapidity |
|
Phi |
electron azimuthal angle |
|
Charge |
electron charge |
|
EhadOverEem |
ratio of the hadronic versus electromagnetic energy deposited in the calorimeter |
|
Particle |
reference to generated particle |
|
Muon
|
PT |
muon transverse momentum |
|
Eta |
muon pseudorapidity |
|
Phi |
muon azimuthal angle |
|
Charge |
muon charge |
|
Particle |
reference to generated particle |
|
Jet
|
PT |
jet transverse momentum |
|
Eta |
jet pseudorapidity |
|
Phi |
jet azimuthal angle |
|
Mass |
jet invariant mass |
|
BTag |
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) |
|
Tau1 |
1-subjettiness |
|
Tau2 |
2-subjettiness |
|
Tau3 |
3-subjettiness |
|
Tau4 |
4-subjettiness |
|
Tau5 |
5-subjettiness |
|
Constituents |
references to constituents |
|
Particles |
references to generated particles |
|
Track
|
PID |
HEP ID number |
|
Charge |
track charge |
|
PT |
track transverse momentum |
|
Eta |
track pseudorapidity |
|
Phi |
track azimuthal angle |
|
EtaOuter |
track pseudorapidity at the tracker edge |
|
PhiOuter |
track azimuthal angle at the tracker edge |
|
X |
track vertex position (x component) |
|
Y |
track vertex position (y component) |
|
Z |
track vertex position (z component) |
|
T |
track vertex position (z component) |
|
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 |
|
TOuter |
track position (z component) at the tracker edge |
|
Particle |
reference to generated particle |
|
Tower
|
ET |
calorimeter tower transverse energy |
|
Eta |
calorimeter tower pseudorapidity |
|
Phi |
calorimeter tower azimuthal angle |
|
E |
calorimeter tower energy |
|
Eem |
calorimeter tower electromagnetic energy |
|
Ehad |
calorimeter tower hadronic energy |
|
Edges[4] |
calorimeter tower edges |
|
Particles |
references to generated particles |
|
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 |
|