Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector. / The ATLAS Collaboration.

In: European Physical Journal C: Particles and Fields, Vol. 77, 580, 09.2017, p. 1-32.

Research output: Contribution to journalArticlepeer-review

Published

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Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector. / The ATLAS Collaboration.

In: European Physical Journal C: Particles and Fields, Vol. 77, 580, 09.2017, p. 1-32.

Research output: Contribution to journalArticlepeer-review

Harvard

The ATLAS Collaboration 2017, 'Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector', European Physical Journal C: Particles and Fields, vol. 77, 580, pp. 1-32. https://doi.org/10.1140/epjc/s10052-017-5081-5

APA

The ATLAS Collaboration (2017). Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector. European Physical Journal C: Particles and Fields, 77, 1-32. [580]. https://doi.org/10.1140/epjc/s10052-017-5081-5

Vancouver

The ATLAS Collaboration. Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector. European Physical Journal C: Particles and Fields. 2017 Sep;77:1-32. 580. https://doi.org/10.1140/epjc/s10052-017-5081-5

Author

The ATLAS Collaboration. / Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector. In: European Physical Journal C: Particles and Fields. 2017 ; Vol. 77. pp. 1-32.

BibTeX

@article{365180b680ef46a195509fd55c8013be,
title = "Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector",
abstract = "The rejection of forward jets originating from additional proton–proton interactions (pile-up) is crucial for a variety of physics analyses at the LHC, including Standard Model measurements and searches for physics beyond the Standard Model. The identification of such jets is challenging due to the lack of track and vertex information in the pseudorapidity range |η|>2.5. This paper presents a novel strategy for forward pile-up jet tagging that exploits jet shapes and topological jet correlations in pile-up interactions. Measurements of the per-jet tagging efficiency are presented using a data set of 3.2 fb−1 of proton–proton collisions at a centre-of-mass energy of 13 TeV collected with the ATLAS detector. The fraction of pile-up jets rejected in the range 2.5<|η|<4.5 is estimated in simulated events with an average of 22 interactions per bunch-crossing. It increases with jet transverse momentum and, for jets with transverse momentum between 20 and 50 GeV, it ranges between 49% and 67% with an efficiency of 85% for selecting hard-scatter jets. A case study is performed in Higgs boson production via the vector-boson fusion process, showing that these techniques mitigate the background growth due to additional proton–proton interactions, thus enhancing the reach for such signatures.",
author = "{The ATLAS Collaboration}",
year = "2017",
month = sep,
doi = "10.1140/epjc/s10052-017-5081-5",
language = "English",
volume = "77",
pages = "1--32",
journal = "European Physical Journal C: Particles and Fields",
issn = "1434-6044",
publisher = "Springer New York",

}

RIS

TY - JOUR

T1 - Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector

AU - The ATLAS Collaboration

PY - 2017/9

Y1 - 2017/9

N2 - The rejection of forward jets originating from additional proton–proton interactions (pile-up) is crucial for a variety of physics analyses at the LHC, including Standard Model measurements and searches for physics beyond the Standard Model. The identification of such jets is challenging due to the lack of track and vertex information in the pseudorapidity range |η|>2.5. This paper presents a novel strategy for forward pile-up jet tagging that exploits jet shapes and topological jet correlations in pile-up interactions. Measurements of the per-jet tagging efficiency are presented using a data set of 3.2 fb−1 of proton–proton collisions at a centre-of-mass energy of 13 TeV collected with the ATLAS detector. The fraction of pile-up jets rejected in the range 2.5<|η|<4.5 is estimated in simulated events with an average of 22 interactions per bunch-crossing. It increases with jet transverse momentum and, for jets with transverse momentum between 20 and 50 GeV, it ranges between 49% and 67% with an efficiency of 85% for selecting hard-scatter jets. A case study is performed in Higgs boson production via the vector-boson fusion process, showing that these techniques mitigate the background growth due to additional proton–proton interactions, thus enhancing the reach for such signatures.

AB - The rejection of forward jets originating from additional proton–proton interactions (pile-up) is crucial for a variety of physics analyses at the LHC, including Standard Model measurements and searches for physics beyond the Standard Model. The identification of such jets is challenging due to the lack of track and vertex information in the pseudorapidity range |η|>2.5. This paper presents a novel strategy for forward pile-up jet tagging that exploits jet shapes and topological jet correlations in pile-up interactions. Measurements of the per-jet tagging efficiency are presented using a data set of 3.2 fb−1 of proton–proton collisions at a centre-of-mass energy of 13 TeV collected with the ATLAS detector. The fraction of pile-up jets rejected in the range 2.5<|η|<4.5 is estimated in simulated events with an average of 22 interactions per bunch-crossing. It increases with jet transverse momentum and, for jets with transverse momentum between 20 and 50 GeV, it ranges between 49% and 67% with an efficiency of 85% for selecting hard-scatter jets. A case study is performed in Higgs boson production via the vector-boson fusion process, showing that these techniques mitigate the background growth due to additional proton–proton interactions, thus enhancing the reach for such signatures.

U2 - 10.1140/epjc/s10052-017-5081-5

DO - 10.1140/epjc/s10052-017-5081-5

M3 - Article

VL - 77

SP - 1

EP - 32

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

M1 - 580

ER -