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Measurement of high-mass tt¯ℓ+ℓ- production and lepton flavour universality-inspired effective field theory interpretations at s=13 TeV with the ATLAS detector
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Measurement of high-mass tt¯ℓ+ℓ- production and lepton flavour universality-inspired effective field theory interpretations at s=13 TeV with the ATLAS detector

L. Zwalinski, O. Zormpa, T. G. Zorbas, A. Zografos, K. Zoch, A. Zoccoli, L. Živković, M. Ziolkowski, J. Zinsser, N. I. Zimine, …
The European physical journal. C, Particles and fields, 卷.85(12), 1434
18/12/2025
Web of Science ID: WOS:001671690300001

摘要

Measurements of t (t) over barl(+)l(-) production in the region of high dilepton invariant mass with effective field theory (EFT) interpretations are presented. They are performed using final states with three isolated leptons (electrons or muons) and are based on root s = 13 TeV proton-proton collision data with an integrated luminosity of 140 fb(-1), recorded from 2015 to 2018 with the ATLAS detector at the Large Hadron Collider. Measurements of the t (t) over barl(+)l(-) signal strength and cross-section upper-limits are performed inclusively in lepton flavour and separately for electrons and muons. The study also aims to probe anomalous four-fermion interactions including to test for possible lepton flavor universality violation. No significant deviations from the Standard Model predictions are observed and the measurements are interpreted through the EFT formalism to provide new constraints on the relevant operators.

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機構合作
國際合作
引用書目主題
5 Physics
5.9 Particles & Fields
5.9.19 Beyond Standard Model
Web Of Science研究領域
Physics, Particles & Fields
ESI研究領域
Physics

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