This document contains 10k events where two electron candidates with invariant mass near the mass of Z-boson were observed. The data was selected from the primary dataset DoubleElectron 2011. These data were selected for use in education and outreach and contain a subset of the total event information. They are not suitable for a full physics analysis.
|Run||The run number of the event.|
|Event||The event number.|
|pt||The transverse momentum of the electron (GeV).|
|eta||The pseudorapidity of the electron.|
|phi||The phi angle of the electron (rad).|
|Q||The charge of the electron.|
|type||Either EB or EE: whether the electron is in the barrel or in the endcap.|
|sigmaEtaEta||The weighted cluster rms along eta for an electron.|
|HoverE||The energy of the electron in the HCAL divided by the energy of the electron in the ECAL.|
|isoTrack||The isolation variable for the electron in the tracker.|
|isoEcal||The isolation variable for the electron in the ECAL.|
|isoHcal||The isolation variable for the electron in the HCAL.|
An event was selected if there were two electrons in the event with pT > 25 GeV and the invariant mass of the two electrons was > 60 GeV and < 120 GeV.
Comma-separated value (csv) files can be used in online applications such as the histogram visualizer and other applications, examples are given in