Unveiling hidden physics at the LHC

O Fischer, B Mellado, S Antusch, E Bagnaschi… - The European Physical …, 2022 - Springer
The field of particle physics is at the crossroads. The discovery of a Higgs-like boson
completed the Standard Model (SM), but the lacking observation of convincing resonances …

Observation of four-top-quark production in the multilepton final state with the ATLAS detector

G Aad, B Abbott, K Abeling, NJ Abicht, SH Abidi… - The European Physical …, 2023 - Springer
This paper presents the observation of four-top-quark (tt¯ tt¯) production in proton-proton
collisions at the LHC. The analysis is performed using an integrated luminosity of 140 fb-1 at …

Observation of four top quark production in proton-proton collisions at s= 13TeV

A Hayrapetyan, A Tumasyan, W Adam, JW Andrejkovic… - Physics Letters B, 2023 - Elsevier
The observation of the production of four top quarks in proton-proton collisions is reported,
based on a data sample collected by the CMS experiment at a center-of-mass energy of 13 …

Combined SMEFT interpretation of Higgs, diboson, and top quark data from the LHC

JJ Ethier, G Magni, F Maltoni, L Mantani… - Journal of High Energy …, 2021 - Springer
A bstract We present a global interpretation of Higgs, diboson, and top quark production and
decay measurements from the LHC in the framework of the Standard Model Effective Field …

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 …

The present and future of four top operators

G Banelli, E Salvioni, J Serra, T Theil… - Journal of High Energy …, 2021 - Springer
A bstract We study the phenomenology of a strongly-interacting top quark at future hadron
and lepton colliders, showing that the characteristic four-top contact operators give rise to …

Automated one-loop computations in the standard model effective field theory

C Degrande, G Durieux, F Maltoni, K Mimasu… - Physical Review D, 2021 - APS
We present the automation of one-loop computations in the standard-model effective field
theory at dimension 6. Our general implementation, dubbed smeft@ nlo, covers all types of …

Measurement of the cross section of top quark-antiquark pair production in association with a W boson in proton-proton collisions at = 13 TeV

A Tumasyan, W Adam, JW Andrejkovic… - Journal of High Energy …, 2023 - Springer
A bstract The production of a top quark-antiquark pair in association with a W boson
(\(\textrm {t}\overline {\textrm {t}}\textrm {W}\)) is measured in proton-proton collisions at a …

Precise Predictions for the Associated Production of a Boson with a Top-Antitop Quark Pair at the LHC

L Buonocore, S Devoto, M Grazzini, S Kallweit… - Physical Review Letters, 2023 - APS
The production of a top-antitop quark pair in association with a W boson (tt¯ W) is one of the
heaviest signatures currently probed at the Large Hadron Collider. Since the first …

On improving NLO merging for production

R Frederix, I Tsinikos - Journal of High Energy Physics, 2021 - Springer
A bstract We introduce an improvement to the FxFx matrix element merging procedure for
pp→\(t\overline {t} W\) production at NLO in QCD with one and/or two additional jets. The …