Version 8 (modified by 11 years ago) ( diff ) | ,
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Root Tree Description
Description of all classes used to store output data.
Parameter | Definition | How it was calculated |
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class Event | ||
Number | event number | |
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 HepMCEvent | ||
Event | HepMCEvent inherits all Event parameters | |
ProcessID | unique signal process id | signal_process_id() |
MPI | number of multi parton interactions | mpi() |
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 | generator specific status code: HepMC status codes, Herwig status codes, Herwig++ status codes, Pythia status codes | 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] |
class MissingET | ||
MET | mising transverse energy | |
Phi | mising energy azimuthal angle | |
class ScalarHT | ||
HT | scalar sum of transverse momenta | |
class 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 | |
class 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 | |
class Muon | ||
PT | muon transverse momentum | |
Eta | muon pseudorapidity | |
Phi | muon azimuthal angle | |
Charge | muon charge | |
Particle | reference to generated particle | |
class 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 | |
Constituents | references to constituents | |
Particles | references to generated particles | |
class 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) | |
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 | |
Particle | reference to generated particle | |
class 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 |
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