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Abstract:

This paper presents the method and performance of primary vertex reconstruction in proton–proton collision data recorded by the ATLAS experiment during Run 1 of the LHC. The studies presented focus on data taken during 2012 at a centre-of-mass energy of s=8 TeV. The performance has been measured as a function of the number of interactions per bunch crossing over a wide range, from one to seventy. The measurement of the position and size of the luminous region and its use as a constraint to improve the primary vertex resolution are discussed. A longitudinal vertex position resolution of about 30μm is achieved for events with high multiplicity of reconstructed tracks. The transverse position resolution is better than 20μm and is dominated by the precision on the size of the luminous region. An analytical model is proposed to describe the primary vertex reconstruction efficiency as a function of the number of interactions per bunch crossing and of the longitudinal size of the luminous region. Agreement between the data and the predictions of this model is better than 3% up to seventy interactions per bunch crossing. © 2017, CERN for the benefit of the ATLAS collaboration.

Registro:

Documento: Artículo
Título:Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC
Autor:Aaboud, M. et al.
Este artículo contiene 2855 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2855 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2017
Volumen:77
Número:5
DOI: http://dx.doi.org/10.1140/epjc/s10052-017-4887-5
Título revista:European Physical Journal C
Título revista abreviado:Eur. Phys. J. C
ISSN:14346044
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v77_n5_p_Aaboud

Referencias:

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Citas:

---------- APA ----------
(2017) . Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC. European Physical Journal C, 77(5).
http://dx.doi.org/10.1140/epjc/s10052-017-4887-5
---------- CHICAGO ----------
Aaboud, M. "Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC" . European Physical Journal C 77, no. 5 (2017).
http://dx.doi.org/10.1140/epjc/s10052-017-4887-5
---------- MLA ----------
Aaboud, M. "Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC" . European Physical Journal C, vol. 77, no. 5, 2017.
http://dx.doi.org/10.1140/epjc/s10052-017-4887-5
---------- VANCOUVER ----------
Aaboud, M. Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC. Eur. Phys. J. C. 2017;77(5).
http://dx.doi.org/10.1140/epjc/s10052-017-4887-5