| 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
|
|