Search for Beyond the Standard Model physics with anomaly detection in multilepton final states in pp collisions at s=13TeV with the ATLAS detector
Publication
, Journal Article
Zwalinski, L; Zormpa, O; Zorbas, TG; Zografos, A; Zoch, K; Zoccoli, A; Živković, L; Ziolkowski, M; Zinsser, J; Zimine, NI; Zhukov, K; Zhu, Y ...
Published in: European Physical Journal C
March 1, 2026
A model-agnostic search for Beyond the Standard Model physics is presented, targeting final states with at least four light leptons (electrons or muons). The search regions are separated by event topology and unsupervised machine learning is used to identify anomalous events in the full 140 fb-1 of proton–proton collision data collected with the ATLAS detector during Run 2. No significant excess above the Standard Model background expectation is observed. Model-agnostic limits are presented in each topology, along with limits on several benchmark models including vector-like leptons, wino-like charginos and neutralinos, or smuons. Limits are set on the flavourful vector-like lepton model for the first time.
Duke Scholars
Published In
European Physical Journal C
DOI
EISSN
1434-6052
ISSN
1434-6044
Publication Date
March 1, 2026
Volume
86
Issue
3
Related Subject Headings
- Nuclear & Particles Physics
- 5107 Particle and high energy physics
- 5102 Atomic, molecular and optical physics
- 5101 Astronomical sciences
Citation
APA
Chicago
ICMJE
MLA
NLM
Zwalinski, L., Zormpa, O., Zorbas, T. G., Zografos, A., Zoch, K., Zoccoli, A., … Yamazaki, T. (2026). Search for Beyond the Standard Model physics with anomaly detection in multilepton final states in pp collisions at s=13TeV with the ATLAS detector. European Physical Journal C, 86(3). https://doi.org/10.1140/epjc/s10052-025-15218-2
Zwalinski, L., O. Zormpa, T. G. Zorbas, A. Zografos, K. Zoch, A. Zoccoli, L. Živković, et al. “Search for Beyond the Standard Model physics with anomaly detection in multilepton final states in pp collisions at s=13TeV with the ATLAS detector.” European Physical Journal C 86, no. 3 (March 1, 2026). https://doi.org/10.1140/epjc/s10052-025-15218-2.
Zwalinski L, Zormpa O, Zorbas TG, Zografos A, Zoch K, Zoccoli A, et al. Search for Beyond the Standard Model physics with anomaly detection in multilepton final states in pp collisions at s=13TeV with the ATLAS detector. European Physical Journal C. 2026 Mar 1;86(3).
Zwalinski, L., et al. “Search for Beyond the Standard Model physics with anomaly detection in multilepton final states in pp collisions at s=13TeV with the ATLAS detector.” European Physical Journal C, vol. 86, no. 3, Mar. 2026. Scopus, doi:10.1140/epjc/s10052-025-15218-2.
Zwalinski L, Zormpa O, Zorbas TG, Zografos A, Zoch K, Zoccoli A, Živković L, Ziolkowski M, Zinsser J, Zimine NI, Zhukov K, Zhuang X, Zhu Y, Zhu X, Zhu J, Zhou Y, Zhou N, Zhou H, Zhou B, Zhong D, Zheng Z, Zheng X, Zheng K, Zheng J, Zhemchugov A, Zhao Z, Zhao Y, Zhao T, Zhao H, Zhang Z, Zhang Y, Zhang T, Zhang S, Zhang R, Zhang P, Zhang L, Zhang J, Zhang G, Zhang DF, Zhai M, Zerwas D, Zenz S, Ženiš T, Zenin O, Zenger DT, Zeng H, Zeitnitz C, Zaplatilek O, Zanzottera R, Zang J, Zamora Saa JA, Zambito S, Zakareishvili T, Zak ZK, Zaio A, Zahir I, Zabinski B, Zaazoua M, Yue L, Yuan R, Yuan M, Yuan J, Yu Y, Young ND, Young C, Young CJS, Yorita K, Yildirim TP, Yexley MR, Yeo B, Yeletskikh I, Yeh Y, Ye X, Ye S, Ye J, Yardley CL, Yao WM, Yang Y, Yang X, Yang T, Yang S, Yang HT, Yang HJ, Yan Z, Yan S, Yamazaki Y, Yamazaki T. Search for Beyond the Standard Model physics with anomaly detection in multilepton final states in pp collisions at s=13TeV with the ATLAS detector. European Physical Journal C. 2026 Mar 1;86(3).
Published In
European Physical Journal C
DOI
EISSN
1434-6052
ISSN
1434-6044
Publication Date
March 1, 2026
Volume
86
Issue
3
Related Subject Headings
- Nuclear & Particles Physics
- 5107 Particle and high energy physics
- 5102 Atomic, molecular and optical physics
- 5101 Astronomical sciences