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Combined effective field theory interpretation of Higgs boson and weak boson production and decay with ATLAS data and electroweak precision observables

Wilson coefficients of the Standard Model Effective Field Theory (SMEFT) are constrained in a combined fit of measurements of Higgs boson production and decay in the framework of Simplified Template Cross Sections and differential cross-section measurements of weak boson production at the ATLAS expe...

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Detalles Bibliográficos
Autor principal: The ATLAS collaboration
Lenguaje:eng
Publicado: 2022
Materias:
Acceso en línea:http://cds.cern.ch/record/2816369
Descripción
Sumario:Wilson coefficients of the Standard Model Effective Field Theory (SMEFT) are constrained in a combined fit of measurements of Higgs boson production and decay in the framework of Simplified Template Cross Sections and differential cross-section measurements of weak boson production at the ATLAS experiment as well as electroweak precision observables measured at the LEP and SLC colliders. The ATLAS measurements are based on 36-139~fb$^{-1}$ of proton-proton collision data collected at the LHC at $\sqrt{s}=$~13~TeV. The SMEFT interpretation is performed using a combined likelihood function that takes into account experimental uncertainties and their correlation as well as theoretical uncertainties on Standard Model predictions. Constraints on 28 Wilson coefficients and their mutually orthogonal linear combinations are determined. No new deviations from the SM are observed.