Collaboration, ATLAS;
(2020)
Performance of the ATLAS muon triggers in Run 2.
Journal of Instrumentation
, 15
10.1088/1748-0221/15/09/p09015.
Preview |
Text
Aad_2020_J._Inst._15_P09015.pdf - Published Version Download (3MB) | Preview |
Abstract
The performance of the ATLAS muon trigger system is evaluated with proton-proton ($pp$) and heavy-ion (HI) collision data collected in Run 2 during 2015-2018 at the Large Hadron Collider. It is primarily evaluated using events containing a pair of muons from the decay of $Z$ bosons to cover the intermediate momentum range between 25 GeV and 100 GeV. Overall, the efficiency of the single-muon triggers is about 68 % in the barrel region and 85% in the endcap region. The $p_{\text{T}}$ range for efficiency determination is extended by using muons from decays of $J/\psi$ mesons, $W$ bosons, and top quarks. The performance in HI collision data is measured and shows good agreement with the results obtained in $pp$ collisions. The muon trigger shows uniform and stable performance in good agreement with the prediction of a detailed simulation. Dedicated multi-muon triggers with kinematic selections provide the backbone to beauty, quarkonia, and low-mass physics studies. The design, evolution and performance of these triggers are discussed in detail.
| Type: | Article |
|---|---|
| Title: | Performance of the ATLAS muon triggers in Run 2 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1748-0221/15/09/p09015 |
| Publisher version: | http://dx.doi.org/10.1088/1748-0221/15/09/p09015 |
| Additional information: | Copyright © 2020 CERN. Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| Keywords: | Data acquisition concepts; Data processing methods; Online farms and online filtering; Trigger concepts and systems (hardware and software) |
| 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/10110610 |
Archive Staff Only
 |
View Item |
