CMS Tracking Performance Results from Early LHC Operation

Eija Maarit Tuominen, Esa Veikko Tuovinen, CMS Collaboration

Research output: Contribution to journalArticleScientificpeer-review

136 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)1165-1192
JournalThe European Physical Journal C: Particles and Fields
Volume70
DOIs
Publication statusPublished - 24 Nov 2010
MoE publication typeA1 Journal article-refereed

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