articleJournal of InstrumentationOct 16, 2014HYBRID OA

Description and performance of track and primary-vertex reconstruction with the CMS tracker

TCThe CMS Collaboration

A. Alikhanyan National Laboratory · Institute of Chemical Physics NAS RA

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Abstract

A description is provided of the software algorithms developed for the CMS tracker both for reconstructing charged-particle trajectories in proton-proton interactions and for using the resulting tracks to estimate the positions of the LHC luminous region and individual primary-interaction vertices. Despite the very hostile environment at the LHC, the performance obtained with these algorithms is found to be excellent. For tbar t events under typical 2011 pileup conditions, the average track-reconstruction efficiency for promptly-produced charged particles with transverse momenta of p(T) > 0.9GeV is 94% for pseudorapidities of |η| < 0.9 and 85% for 0.9 < |η| < 2.5. The inefficiency is caused mainly…

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Authors

1
  • TC
    The CMS CollaborationCorresponding

    A. Alikhanyan National Laboratory, Institute of Chemical Physics NAS RA

Topics & keywords

Topics
Keywords
  • Physics
  • Tracking (education)
  • Large Hadron Collider
  • Muon
  • Proton
  • Transverse plane
  • Electron
  • Charged particle
UN Sustainable Development Goals
  • Sustainable cities and communities
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