Search for squarks and gluinos in pp collisions at s=13 TeV and 13.6 TeV in events with τ-leptons, jets and missing transverse momentum using the ATLAS detector

ATLAS Collaboration

doi:10.1140/epjc/s10052-025-14957-6

Search for squarks and gluinos in pp collisions at s=13 TeV and 13.6 TeV in events with τ-leptons, jets and missing transverse momentum using the ATLAS detector

ATLAS Collaboration

Department of Physics
Stellenbosch University
Department of Physics
University of South Africa
University of Zululand
Cadi Ayyad University
Departamento de Física Teórica y del Cosmos
University of Granada
CERN
Demokritos National Centre for Scientific Research
University of Sheffield
Harvard University
University of Bologna
National Institute for Nuclear Physics
University of Belgrade
University of Siegen
Heidelberg University
Indiana University Bloomington
CAS - Institute of High Energy Physics
University of Science and Technology of China
Shanghai Jiao Tong University
University of Michigan, Ann Arbor
Shandong University
University of Arizona
Nanjing University
Tsinghua University
University of Illinois at Urbana-Champaign
SLAC National Accelerator Laboratory
Carleton University
University of Washington
Université Paris-Saclay
Lawrence Berkeley National Laboratory
University College London
The University of Tokyo
Laboratoire Evolution et Diversité Biologique, CNRS, Université Paul Sabatier

Research output: Contribution to journal › Article › peer-review

Abstract

A search for R-parity-conserving supersymmetry in events with large missing transverse momentum, jets and at least one hadronically decaying τ-lepton is presented. Both gluino and squark pair production are considered, with the cascade decay of each gluino or squark producing either a τ-slepton or a τ-sneutrino. Three channels are examined, requiring either exactly one hadronically decaying τ-lepton and no other leptons, exactly one hadronically decaying τ-lepton and at least one other lepton, or two or more hadronically decaying τ-leptons. Analyses in the three channels are optimised independently and combined statistically. Two separate analysis strategies, either a cut-and-count or machine-learning approach, are used. The search uses 140 fb-1 and 51.8 fb-1 of pp collision data recorded by the ATLAS detector at the Large Hadron Collider during 2015–2018 at s=13 TeV and 2022–2023 at s=13.6 TeV, respectively. Gluino masses below 2.25 TeV and squark masses up to 1.7 TeV

Original language	English
Article number	1437
Journal	European Physical Journal C
Volume	85
Issue number	12
DOIs	https://doi.org/10.1140/epjc/s10052-025-14957-6
State	Published - Dec 2025

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10.1140/epjc/s10052-025-14957-6

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@article{0bf557e094b5460d9e502002334ef890,

title = "Search for squarks and gluinos in pp collisions at s=13 TeV and 13.6 TeV in events with τ-leptons, jets and missing transverse momentum using the ATLAS detector",

abstract = "A search for R-parity-conserving supersymmetry in events with large missing transverse momentum, jets and at least one hadronically decaying τ-lepton is presented. Both gluino and squark pair production are considered, with the cascade decay of each gluino or squark producing either a τ-slepton or a τ-sneutrino. Three channels are examined, requiring either exactly one hadronically decaying τ-lepton and no other leptons, exactly one hadronically decaying τ-lepton and at least one other lepton, or two or more hadronically decaying τ-leptons. Analyses in the three channels are optimised independently and combined statistically. Two separate analysis strategies, either a cut-and-count or machine-learning approach, are used. The search uses 140 fb-1 and 51.8 fb-1 of pp collision data recorded by the ATLAS detector at the Large Hadron Collider during 2015–2018 at s=13 TeV and 2022–2023 at s=13.6 TeV, respectively. Gluino masses below 2.25 TeV and squark masses up to 1.7 TeV",

author = "\{ATLAS Collaboration\} and L. Zwalinski and O. Zormpa and Zorbas, \{T. G.\} and A. Zografos and K. Zoch and A. Zoccoli and L. {\v Z}ivkovi{\'c} and M. Ziolkowski and J. Zinsser and Zimine, \{N. I.\} and K. Zhukov and X. Zhuang and Y. Zhu and Y. Zhu and X. Zhu and J. Zhu and Zhu, \{C. G.\} and Y. Zhou and Y. Zhou and Y. Zhou and N. Zhou and H. Zhou and B. Zhou and D. Zhong and Z. Zheng and X. Zheng and K. Zheng and J. Zheng and A. Zhemchugov and Z. Zhao and Z. Zhao and Y. Zhao and T. Zhao and H. Zhao and Z. Zhang and Z. Zhang and Z. Zhang and Y. Zhang and Y. Zhang and Y. Zhang and Y. Zhang and T. Zhang and S. Zhang and D. Tsybychev and G. Piacquadio and J. Jia and J. Hobbs and V. Dao and \{Da Via\}, C. and H. Arnold",

note = "Publisher Copyright: {\textcopyright} CERN for the benefit of the ATLAS Collaboration 2025.",

year = "2025",

month = dec,

doi = "10.1140/epjc/s10052-025-14957-6",

language = "English",

volume = "85",

journal = "European Physical Journal C",

issn = "1434-6044",

number = "12",

}

TY - JOUR

T1 - Search for squarks and gluinos in pp collisions at s=13 TeV and 13.6 TeV in events with τ-leptons, jets and missing transverse momentum using the ATLAS detector

AU - ATLAS Collaboration

AU - Zwalinski, L.

AU - Zormpa, O.

AU - Zorbas, T. G.

AU - Zografos, A.

AU - Zoch, K.

AU - Zoccoli, A.

AU - Živković, L.

AU - Ziolkowski, M.

AU - Zinsser, J.

AU - Zimine, N. I.

AU - Zhukov, K.

AU - Zhuang, X.

AU - Zhu, Y.

AU - Zhu, X.

AU - Zhu, J.

AU - Zhu, C. G.

AU - Zhou, Y.

AU - Zhou, N.

AU - Zhou, H.

AU - Zhou, B.

AU - Zhong, D.

AU - Zheng, Z.

AU - Zheng, X.

AU - Zheng, K.

AU - Zheng, J.

AU - Zhemchugov, A.

AU - Zhao, Z.

AU - Zhao, Y.

AU - Zhao, T.

AU - Zhao, H.

AU - Zhang, Z.

AU - Zhang, Y.

AU - Zhang, T.

AU - Zhang, S.

AU - Tsybychev, D.

AU - Piacquadio, G.

AU - Jia, J.

AU - Hobbs, J.

AU - Dao, V.

AU - Da Via, C.

AU - Arnold, H.

PY - 2025/12

Y1 - 2025/12

N2 - A search for R-parity-conserving supersymmetry in events with large missing transverse momentum, jets and at least one hadronically decaying τ-lepton is presented. Both gluino and squark pair production are considered, with the cascade decay of each gluino or squark producing either a τ-slepton or a τ-sneutrino. Three channels are examined, requiring either exactly one hadronically decaying τ-lepton and no other leptons, exactly one hadronically decaying τ-lepton and at least one other lepton, or two or more hadronically decaying τ-leptons. Analyses in the three channels are optimised independently and combined statistically. Two separate analysis strategies, either a cut-and-count or machine-learning approach, are used. The search uses 140 fb-1 and 51.8 fb-1 of pp collision data recorded by the ATLAS detector at the Large Hadron Collider during 2015–2018 at s=13 TeV and 2022–2023 at s=13.6 TeV, respectively. Gluino masses below 2.25 TeV and squark masses up to 1.7 TeV

AB - A search for R-parity-conserving supersymmetry in events with large missing transverse momentum, jets and at least one hadronically decaying τ-lepton is presented. Both gluino and squark pair production are considered, with the cascade decay of each gluino or squark producing either a τ-slepton or a τ-sneutrino. Three channels are examined, requiring either exactly one hadronically decaying τ-lepton and no other leptons, exactly one hadronically decaying τ-lepton and at least one other lepton, or two or more hadronically decaying τ-leptons. Analyses in the three channels are optimised independently and combined statistically. Two separate analysis strategies, either a cut-and-count or machine-learning approach, are used. The search uses 140 fb-1 and 51.8 fb-1 of pp collision data recorded by the ATLAS detector at the Large Hadron Collider during 2015–2018 at s=13 TeV and 2022–2023 at s=13.6 TeV, respectively. Gluino masses below 2.25 TeV and squark masses up to 1.7 TeV

UR - https://www.scopus.com/pages/publications/105026661071

U2 - 10.1140/epjc/s10052-025-14957-6

DO - 10.1140/epjc/s10052-025-14957-6

M3 - Article

AN - SCOPUS:105026661071

SN - 1434-6044

VL - 85

JO - European Physical Journal C

JF - European Physical Journal C

IS - 12

M1 - 1437

ER -

Search for squarks and gluinos in pp collisions at s=13 TeV and 13.6 TeV in events with τ-leptons, jets and missing transverse momentum using the ATLAS detector

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