Cite as: McCauley, Thomas; (2014). J/psi to two muons from 2010. CERN Open Data Portal. DOI:10.7483/OPENDATA.CMS.SW96.PFX3
The collaboration approved 2000 dimuon events around the J/psi for use in education and outreach. This record contains the necessary files for these use-cases.
These data were selected for use in education and outreach and contain a subset of the total event information. The selection criteria may be different from that used in CMS physics results. They are not suitable for a full physics analysis.
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|Type||Combination of T and G, where T stands for tracker muon and G stands for global muon.|
|Run||The run number of the event.|
|Event||The event number.|
|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.|
|M||The invariant mass of two muons (GeV).|
The events in this derived dataset were selected because of the presence of two muons with invariant mass between 2-5 GeV.
Files with the extension .ig are JSON files containing information suitable for visual display. The data can be accessed from the file menu of the online event display. Comma-separated value (csv) files can be used in online applications such as the histogram visualizer and other applications, examples are given in
The open data are released under the Creative Commons CC0 waiver. Neither CMS nor CERN endorse any works, scientific or otherwise, produced using these data. All releases will have a unique DOI that you are requested to cite in any applications or publications.