Aaboudd, M;
Aad, G;
Abbott, B;
Abdallah, J;
Abdinov, O;
Abeloos, B;
Aben, R;
... Zwalinski, L; + view all
(2017)
Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton-proton collisions at the LHC.
The European Physical Journal C
, 77
(5)
, Article 332. 10.1140/epjc/s10052-017-4887-5.
Preview |
Text
Korn_10.1140%252Fepjc%252Fs10052-017-4887-5.pdf - Published Version Download (4MB) | Preview |
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 30 µm is achieved for events with high multiplicity of reconstructed tracks. The transverse position resolution is better than 20 µm 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.
| Type: | Article |
|---|---|
| Title: | Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton-proton collisions at the LHC |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1140/epjc/s10052-017-4887-5 |
| Publisher version: | http://doi.org/10.1140/epjc/s10052-017-4887-5 |
| Language: | English |
| Additional information: | This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecomm ons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3. |
| Keywords: | Science & Technology, Physical Sciences, Physics, Particles & Fields, Physics |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1532424 |
Archive Staff Only
 |
View Item |
