Performance of pile-up mitigation techniques for jets in pp collisions at √s=8 TeV using the ATLAS detector

The large rate of multiple simultaneous proton–proton interactions, or pile-up, generated by the Large Hadron Collider in Run 1 required the development of many new techniques to mitigate the adverse effects of these conditions. This paper describes the methods employed in the ATLAS experiment to co...

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Autor principal: Aad, G.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14346044_v76_n11_p_Aad
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_14346044_v76_n11_p_Aad2023-10-03T16:15:10Z Performance of pile-up mitigation techniques for jets in pp collisions at √s=8 TeV using the ATLAS detector Aad, G. The large rate of multiple simultaneous proton–proton interactions, or pile-up, generated by the Large Hadron Collider in Run 1 required the development of many new techniques to mitigate the adverse effects of these conditions. This paper describes the methods employed in the ATLAS experiment to correct for the impact of pile-up on jet energy and jet shapes, and for the presence of spurious additional jets, with a primary focus on the large 20.3 fb - 1 data sample collected at a centre-of-mass energy of s=8TeV. The energy correction techniques that incorporate sophisticated estimates of the average pile-up energy density and tracking information are presented. Jet-to-vertex association techniques are discussed and projections of performance for the future are considered. Lastly, the extension of these techniques to mitigate the effect of pile-up on jet shapes using subtraction and grooming procedures is presented. © 2016, CERN for the benefit of the ATLAS collaboration. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14346044_v76_n11_p_Aad
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The large rate of multiple simultaneous proton–proton interactions, or pile-up, generated by the Large Hadron Collider in Run 1 required the development of many new techniques to mitigate the adverse effects of these conditions. This paper describes the methods employed in the ATLAS experiment to correct for the impact of pile-up on jet energy and jet shapes, and for the presence of spurious additional jets, with a primary focus on the large 20.3 fb - 1 data sample collected at a centre-of-mass energy of s=8TeV. The energy correction techniques that incorporate sophisticated estimates of the average pile-up energy density and tracking information are presented. Jet-to-vertex association techniques are discussed and projections of performance for the future are considered. Lastly, the extension of these techniques to mitigate the effect of pile-up on jet shapes using subtraction and grooming procedures is presented. © 2016, CERN for the benefit of the ATLAS collaboration.
format JOUR
author Aad, G.
spellingShingle Aad, G.
Performance of pile-up mitigation techniques for jets in pp collisions at √s=8 TeV using the ATLAS detector
author_facet Aad, G.
author_sort Aad, G.
title Performance of pile-up mitigation techniques for jets in pp collisions at √s=8 TeV using the ATLAS detector
title_short Performance of pile-up mitigation techniques for jets in pp collisions at √s=8 TeV using the ATLAS detector
title_full Performance of pile-up mitigation techniques for jets in pp collisions at √s=8 TeV using the ATLAS detector
title_fullStr Performance of pile-up mitigation techniques for jets in pp collisions at √s=8 TeV using the ATLAS detector
title_full_unstemmed Performance of pile-up mitigation techniques for jets in pp collisions at √s=8 TeV using the ATLAS detector
title_sort performance of pile-up mitigation techniques for jets in pp collisions at √s=8 tev using the atlas detector
url http://hdl.handle.net/20.500.12110/paper_14346044_v76_n11_p_Aad
work_keys_str_mv AT aadg performanceofpileupmitigationtechniquesforjetsinppcollisionsats8tevusingtheatlasdetector
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