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Effective field theory interpretation of ATLAS measurements involving the Higgs boson, electroweak bosons and the top quark
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Effective field theory interpretation of ATLAS measurements involving the Higgs boson, electroweak bosons and the top quark

Georges Aad, Erlend Aakvaag, Braden Keim Abbott, Sara Abdelhameed, Kira Abeling, Nils Julius Abicht, Haider Abidi, Mohammed Aboelela, Asmaa Aboulhorma, Halina Abramowicz, …
JHEP, 卷.7(7), 頁.238
27/07/2026
Web of Science ID: WOS:001841204800001

摘要

High Energy Physics - Experiment High Energy Physics - Phenomenology Physics
Wilson coefficients in dimension-six effective field theory are constrained in a combined fit to several ATLAS measurements. These inputs probe Higgs-boson processes across multiple production and decay modes, di-Higgs signatures in thebb̄γγandbb̄ττfinal states,WWandWZdiboson signatures, electroweakZjjfinal states, high-mass Drell-Yan interactions, and top-antitop events in both resolved and boosted topologies. Precision electroweak observables from LEP, SLD, and ATLAS are also included. A total of 48 parameters, including individual Wilson coefficients in the Warsaw basis and linear combinations of Wilson coefficients, are constrained simultaneously. Constraints on two-Higgs-doublet models and heavy-vector-boson models are also obtained by matching a relevant sub-set of the results with their parameters. This combined fit provides the most comprehensive effective field theory interpretation of experimental data by the ATLAS Collaboration to date. No significant deviations from the Standard Model are observed.

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