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

Aad, G; Abbott, B.; Abdallah, J; Abdinov, O; Aben, R; Abolins, M; Åkesson, Torsten LU ; Bocchetta, Simona LU ; BRYNGEMARK, LENE LU and Doglioni, Caterina LU , et al. (2016) In European Physical Journal C 76(11).
Abstract
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- 1data 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... (More)
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- 1data 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. (Less)
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European Physical Journal C
volume
76
issue
11
publisher
Springer
external identifiers
  • scopus:84993983948
ISSN
1434-6044
DOI
10.1140/epjc/s10052-016-4395-z
language
English
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yes
id
0d521a2b-e7ca-4e3e-9102-23b5d6c4c909
date added to LUP
2017-07-18 07:17:08
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2017-11-19 04:41:50
@article{0d521a2b-e7ca-4e3e-9102-23b5d6c4c909,
  abstract     = {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- 1data 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.},
  articleno    = {581},
  author       = {Aad, G and Abbott, B. and Abdallah, J and Abdinov, O and Aben, R and Abolins, M and Åkesson, Torsten and Bocchetta, Simona and BRYNGEMARK, LENE and Doglioni, Caterina and Floderus, Anders and Hawkins, Anthony and Hedberg, Vincent and Ivarsson, Jenny and Jarlskog, Göran and Lytken, Else and Mjörnmark, Ulf and Smirnova, Oxana and Viazlo, Oleksandr and , },
  issn         = {1434-6044},
  language     = {eng},
  number       = {11},
  publisher    = {Springer},
  series       = {European Physical Journal C},
  title        = {Performance of pile-up mitigation techniques for jets in pp collisions at √s=8 TeV using the ATLAS detector},
  url          = {http://dx.doi.org/10.1140/epjc/s10052-016-4395-z},
  volume       = {76},
  year         = {2016},
}