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Open Access item CMS tracking performance results from early LHC operation

Authors:Cabrillo, I. J.
Calderón, A.
Chuang, S. H.
Diaz Merino, I.
Diez González, C.
Duarte Campderros, J.
Fernández, M.
Gómez, G.
González Sánchez, J.
González Suárez, R.
Jorda, C.
Lobelle Pardo, P.
López Virto, A.
Marco, Jesús
Marco, Rafael
Martínez-Rivero, Celso
Martínez Ruiz del Arbol, P.
Matorras, Francisco
Rodrigo, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Sobron Sañudo, M.
Vila, Iván
Vilar, Rocío
Issue Date:2010
Publisher:Springer
Citation:European Physical Journal C: Particles and Fields 70(4): 1165-1192 (2010)
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.
Description:28 páginas, 19 figuras, 5 tablas.-- Open Access: This article is distributed under the terms of the Creative Commons Attribution Noncommercial License.-- CMS Collaboration: et al.
Publisher version (URL):http://dx.doi.org/10.1140/epjc/s10052-010-1491-3
URI:http://hdl.handle.net/10261/45867
ISSN:1434-6044
E-ISSNmetadata.dc.identifier.doi = DOI:1434-6052
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