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ATLAS flavour-tagging algorithms for the LHC Run 2 pp collision dataset

Aad, G. ; Åkesson, T.P.A. LU orcid ; Corrigan, E.E. LU ; Doglioni, C. LU ; Ekman, P.A. LU ; Geisen, J. LU orcid ; Hedberg, V. LU ; Herde, H. LU orcid ; Jarlskog, G. LU and Konya, B. LU , et al. (2023) In European Physical Journal C 83(7).
Abstract
The flavour-tagging algorithms developed by the ATLAS Collaboration and used to analyse its dataset of s=13 TeV pp collisions from Run 2 of the Large Hadron Collider are presented. These new tagging algorithms are based on recurrent and deep neural networks, and their performance is evaluated in simulated collision events. These developments yield considerable improvements over previous jet-flavour identification strategies. At the 77% b-jet identification efficiency operating point, light-jet (charm-jet) rejection factors of 170 (5) are achieved in a sample of simulated Standard Model tt¯ events; similarly, at a c-jet identification efficiency of 30%, a light-jet (b-jet) rejection factor of 70 (9) is obtained. © 2023, The Author(s).
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publishing date
type
Contribution to journal
publication status
published
subject
in
European Physical Journal C
volume
83
issue
7
article number
681
publisher
Springer
external identifiers
  • scopus:85167625195
ISSN
1434-6044
DOI
10.1140/epjc/s10052-023-11699-1
language
English
LU publication?
yes
id
053d2cb0-d07d-478d-b4cd-cdddd62f8616
date added to LUP
2023-12-20 15:23:03
date last changed
2023-12-20 15:23:58
@article{053d2cb0-d07d-478d-b4cd-cdddd62f8616,
  abstract     = {{The flavour-tagging algorithms developed by the ATLAS Collaboration and used to analyse its dataset of s=13 TeV pp collisions from Run 2 of the Large Hadron Collider are presented. These new tagging algorithms are based on recurrent and deep neural networks, and their performance is evaluated in simulated collision events. These developments yield considerable improvements over previous jet-flavour identification strategies. At the 77% b-jet identification efficiency operating point, light-jet (charm-jet) rejection factors of 170 (5) are achieved in a sample of simulated Standard Model tt¯ events; similarly, at a c-jet identification efficiency of 30%, a light-jet (b-jet) rejection factor of 70 (9) is obtained. © 2023, The Author(s).}},
  author       = {{Aad, G. and Åkesson, T.P.A. and Corrigan, E.E. and Doglioni, C. and Ekman, P.A. and Geisen, J. and Hedberg, V. and Herde, H. and Jarlskog, G. and Konya, B. and Lytken, E. and Mjörnmark, J.U. and Poettgen, R. and Simpson, N.D. and Skorda, E. and Smirnova, O. and Zwalinski, L.}},
  issn         = {{1434-6044}},
  language     = {{eng}},
  number       = {{7}},
  publisher    = {{Springer}},
  series       = {{European Physical Journal C}},
  title        = {{ATLAS flavour-tagging algorithms for the LHC Run 2 pp collision dataset}},
  url          = {{http://dx.doi.org/10.1140/epjc/s10052-023-11699-1}},
  doi          = {{10.1140/epjc/s10052-023-11699-1}},
  volume       = {{83}},
  year         = {{2023}},
}