Cite as: McCauley, Thomas; (2014). J/psi to two electrons from 2010. CERN Open Data Portal. DOI:10.7483/OPENDATA.CMS.97YF.C4AH
The collaboration approved the release of 2000 dielectron 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.
This view is specifically designed for use in a Google Cardboard viewer and therefore requires a viewer and a suitable mobile phone.
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Select a 3D model to load.
Currently only .obj format is supported. If an additional .mtl is available and loaded it will be used as well.
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|Run||The run number of the event.|
|Event||The event number.|
|E||The total energy of the electron (GeV).|
|px,py,pz||The components of the momemtum of the electron (GeV).|
|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.|
|M||The invariant mass of two electrons (GeV).|
The events in this derived dataset were selected because of the presence of two electrons 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.