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CMS tracking performance results from early LHC operation


CMS Collaboration; Khachatryan, V; Aguiló, E; Amsler, C; Chiochia, V (2010). CMS tracking performance results from early LHC operation. European Physical Journal C - Particles and Fields, 70(4):1165-1192.

Abstract

The first LHC pp collisions at centre-of-mass energies of 0.9 and 2.36 TeV were recorded by the CMS detector in December 2009. The trajectories of charged particles produced in the collisions were reconstructed using the all-silicon Tracker and their momenta were measured in the 3.8 T axial magnetic field. Results from the Tracker commissioning are presented including studies of timing, efficiency, signal-to-noise, resolution, and ionization energy. Reconstructed tracks are used to benchmark the performance in terms of track and vertex resolutions, reconstruction of decays, estimation of ionization energy loss, as well as identification of photon conversions, nuclear interactions, and heavy-flavour decays.

Abstract

The first LHC pp collisions at centre-of-mass energies of 0.9 and 2.36 TeV were recorded by the CMS detector in December 2009. The trajectories of charged particles produced in the collisions were reconstructed using the all-silicon Tracker and their momenta were measured in the 3.8 T axial magnetic field. Results from the Tracker commissioning are presented including studies of timing, efficiency, signal-to-noise, resolution, and ionization energy. Reconstructed tracks are used to benchmark the performance in terms of track and vertex resolutions, reconstruction of decays, estimation of ionization energy loss, as well as identification of photon conversions, nuclear interactions, and heavy-flavour decays.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Engineering (miscellaneous)
Physical Sciences > Physics and Astronomy (miscellaneous)
Language:English
Date:2010
Deposited On:16 Feb 2011 15:26
Last Modified:23 Jan 2022 18:32
Publisher:Springer
ISSN:1434-6044
OA Status:Hybrid
Publisher DOI:https://doi.org/10.1140/epjc/s10052-010-1491-3
Related URLs:http://arxiv.org/abs/1007.1988
  • Content: Accepted Version
  • Description: Verlags-PDF