This document contains 20k events where two muon candidates with invariant mass near the mass of J/psi were observed. The data was selected from the primary dataset DoubleMu 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.|
|type||Either T or G: whether the muon is a tracker or global muon.|
|E||The total energy of the muon (GeV).|
|px,py,pz||The components of the momemtum of the muon (GeV).|
|pt||The transverse momentum of the muon (GeV).|
|eta||The pseudorapidity of the muon.|
|phi||The phi angle of the muon (rad).|
|Q||The charge of the muon.|
An event was selected if there were two muons in the event, both with |eta| < 2.4, at least one muon was a global muon, the invariant mass of the two muons was > 2 GeV and < 5 GeV, and they have opposite-sign charge.
Comma-separated value (csv) files can be used in online applications such as the histogram visualizer and other applications, examples are given in
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