Butterworth, Jonathan;
ATLAS Collaboration;
(2023)
Tools for estimating fake/non-prompt lepton backgrounds with the ATLAS detector at the LHC.
Journal of Instrumentation
, 18
, Article T11004. 10.1088/1748-0221/18/11/T11004.
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Abstract
Measurements and searches performed with the ATLAS detector at the CERN LHC often involve signatures with one or more prompt leptons. Such analyses are subject to `fake/non-prompt' lepton backgrounds, where either a hadron or a lepton from a hadron decay or an electron from a photon conversion satisfies the prompt-lepton selection criteria. These backgrounds often arise within a hadronic jet because of particle decays in the showering process, particle misidentification or particle interactions with the detector material. As it is challenging to model these processes with high accuracy in simulation, their estimation typically uses data-driven methods. Three methods for carrying out this estimation are described, along with their implementation in ATLAS and their performance.
| Type: | Article |
|---|---|
| Title: | Tools for estimating fake/non-prompt lepton backgrounds with the ATLAS detector at the LHC |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1748-0221/18/11/T11004 |
| Publisher version: | https://doi.org/10.1088/1748-0221/18/11/T11004 |
| Language: | English |
| Additional information: | This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Analysis and statistical methods; Particle identification methods |
| 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/10183232 |
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