Parameter |
Definition |
How it was calculated |
ExRootLHEFEvent
|
Number |
event number
|
|
Nparticles |
number of particles in the event |
hepup.NUP
|
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
|
CouplingQED |
value of the QED coupling used in the event |
hepup.AQEDUP
|
CouplingQCD |
value of the QCD coupling used in the event |
hepup.AQCDUP
|
ExRootLHEFParticle
|
PID |
particle HEP ID number |
hepup.IDUP[number]
|
Status |
particle status code |
hepup.ISTUP[number]
|
Mother1 |
index for the particle first mother |
hepup.MOTHUP[number][0]
|
Mother2 |
index for the particle last mother |
hepup.MOTHUP[number][1]
|
ColorLine1 |
index for the particle color-line |
hepup.ICOLUP[number][0]
|
ColorLine2 |
index for the particle anti-color-line |
hepup.ICOLUP[number][1]
|
Px |
particle momentum vector (x component) |
hepup.PUP[number][0]
|
Py |
particle momentum vector (y component) |
hepup.PUP[number][1]
|
Pz |
particle momentum vector (z component) |
hepup.PUP[number][2]
|
E |
particle energy |
hepup.PUP[number][3]
|
M |
particle mass |
hepup.PUP[number][4]
|
PT |
particle transverse momentum
|
|
Eta |
particle pseudorapidity
|
|
Phi |
particle azimuthal angle
|
|
Rapidity |
particle rapidity
|
|
LifeTime |
particle invariant lifetime
(c*tau, distance from production to decay in mm)
|
hepup.VTIMUP[number]
|
Spin |
cosine of the angle between the particle spin vector
and the decaying particle 3-momentum,
specified in the lab frame. |
hepup.SPINUP[number]
|
ExRootGenEvent
|
Number |
event number |
hepevt.nevhep
|
ExRootGenParticle
|
PID |
particle HEP ID number |
hepevt.idhep[number]
|
Status |
particle status |
hepevt.isthep[number]
|
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 2nd daughter |
hepevt.jdahep[number][1] - 1
|
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]
|
ExRootGenJet
|
E |
jet energy
|
|
Px |
jet momentum vector (x component)
|
|
Py |
jet momentum vector (y component)
|
|
Pz |
jet momentum vector (z component)
|
|
PT |
jet transverse momentum
|
|
Eta |
jet pseudorapidity
|
|
Phi |
jet azimuthal angle
|
|
Rapidity |
jet rapidity
|
|
Mass |
jet invariant mass
|
|
ExRootEvent
|
Number |
event number
|
|
Trigger |
trigger word
|
|
ExRootMissingET
|
MET |
mising transverse energy
|
|
Phi |
mising energy azimuthal angle
|
|
ExRootPhoton
|
PT |
photon transverse momentum
|
|
Eta |
photon pseudorapidity
|
|
Phi |
photon azimuthal angle
|
|
EhadOverEem |
ratio of the hadronic versus electromagnetic energy
deposited in the calorimeter
|
|
ExRootElectron
|
PT |
electron transverse momentum
|
|
Eta |
electron pseudorapidity
|
|
Phi |
electron azimuthal angle
|
|
Charge |
electron charge
|
|
Ntrk |
number of tracks associated with the electron
|
|
EhadOverEem |
ratio of the hadronic versus electromagnetic energy
deposited in the calorimeter
|
|
ExRootMuon
|
PT |
muon transverse momentum
|
|
Eta |
muon pseudorapidity
|
|
Phi |
muon azimuthal angle
|
|
Charge |
muon charge
|
|
Ntrk |
number of tracks associated with the muon
|
|
PTiso |
sum of tracks transverse momentum within a cone of radius R=0.4
centered on the muon (excluding the muon itself)
|
|
ETiso |
ratio of ET in a 3x3 calorimeter cells array around the muon
(including the muon's cell) to the muon PT
|
|
JetIndex |
index of the closest jet
|
|
ExRootTau
|
PT |
tau transverse momentum
|
|
Eta |
tau pseudorapidity
|
|
Phi |
tau azimuthal angle
|
|
Charge |
tau charge
|
|
Ntrk |
number of charged tracks associated with the tau
|
|
EhadOverEem |
ratio of the hadronic versus electromagnetic energy
deposited in the calorimeter
|
|
ExRootJet
|
PT |
jet transverse momentum
|
|
Eta |
jet pseudorapidity
|
|
Phi |
jet azimuthal angle
|
|
Mass |
jet invariant mass
|
|
Ntrk |
number of tracks associated with the jet
|
|
BTag |
1 or 2 for a jet that has been tagged as containing a heavy quark
|
|
EhadOverEem |
ratio of the hadronic versus electromagnetic energy
deposited in the calorimeter
|
|
Index |
jet index in the LHC Olympics file
|
|