Top, Higgs, diboson and electroweak fit to the Standard Model effective field theory

J Ellis, M Madigan, K Mimasu, V Sanz, T You - Journal of High Energy …, 2021 - Springer
A bstract The search for effective field theory deformations of the Standard Model (SM) is a
major goal of particle physics that can benefit from a global approach in the framework of the …

Complete set of dimension-eight operators in the standard model effective field theory

HL Li, Z Ren, J Shu, ML Xiao, JH Yu, YH Zheng - Physical Review D, 2021 - APS
We present a complete list of the dimension-eight operator basis in the standard model
effective field theory using group theoretic techniques in a systematic and automated way …

Snowmass white paper: UV constraints on IR physics

C de Rham, S Kundu, M Reece, AJ Tolley… - arXiv preprint arXiv …, 2022 - arxiv.org
Fundamental principles of local quantum field theory or of quantum gravity can enforce
consistency requirements on the space of consistent low-energy effective field theories. We …

Consistency of the standard model effective field theory

GN Remmen, NL Rodd - Journal of High Energy Physics, 2019 - Springer
We derive bounds on couplings in the standard model effective field theory (SMEFT) as a
consequence of causality and the analytic structure of scattering amplitudes. In the SMEFT …

Dimension-8 SMEFT analysis of minimal scalar field extensions of the Standard Model

J Ellis, K Mimasu, F Zampedri - Journal of High Energy Physics, 2023 - Springer
A bstract We analyze the constraints obtainable from present data using the Standard Model
Effective Field Theory (SMEFT) on extensions of the Standard Model with additional …

Dilepton production in the SMEFT at

R Boughezal, E Mereghetti, F Petriello - Physical Review D, 2021 - APS
We study the inclusion of O (1/Λ 4) effects in the Standard Model effective field theory in fits
to the current Drell-Yan data at the LHC. Our analysis includes the full set of dimension-6 …

Probing new physics in dimension-8 neutral gauge couplings at e+e colliders

J Ellis, HJ He, RQ Xiao - Science China Physics, Mechanics & Astronomy, 2021 - Springer
Neutral triple gauge couplings (nTGCs) are absent in the standard model effective theory up
to dimension-6 operators, but could arise from dimension-8 effective operators. In this work …

Convex geometry perspective on the (Standard Model) effective field theory space

C Zhang, SY Zhou - Physical Review Letters, 2020 - APS
We present a convex geometry perspective to the effective field theory (EFT) parameter
space. We show that the second s derivatives of the forward EFT amplitudes form a convex …

On the future of Higgs, electroweak and diboson measurements at lepton colliders

J De Blas, G Durieux, C Grojean, J Gu… - Journal of High Energy …, 2019 - Springer
A bstract LEP precision on electroweak measurements was sufficient not to hamper the
extraction of Higgs couplings at the LHC. But the foreseen permille-level Higgs measure …

Probing neutral triple gauge couplings at the LHC and future hadron colliders

J Ellis, HJ He, RQ Xiao - Physical Review D, 2023 - APS
We study probes of neutral triple gauge couplings (nTGCs) at the LHC and the proposed
100 TeV pp colliders, and compare their sensitivity reaches with those of proposed e+ e …