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The Standard Model Effective Field Theory (SMEFT) provides a consistent framework for comparing precision measurements at the LHC to the Standard Model. The observation of statistically significant non-zero SMEFT coefficients would…

高能物理 - 唯象学 · 物理学 2021-04-27 Sally Dawson , Samuel Homiller , Samuel D. Lane

A global analysis of the Standard Model Effective Field Theory (SMEFT) with SFitter is performed using measurements of single top quark production and top quark decay processes from ATLAS and CMS at center-of-mass energies of 7, 8 and 13…

高能物理 - 唯象学 · 物理学 2019-05-10 Rhea Moutafis

The Standard Model Effective Field Theory (SMEFT) offers a systematic approach to study potential deviations from the Standard Model (SM) through higher-dimensional operators that encapsulate new physics effects. In this work, we analyze…

高能物理 - 唯象学 · 物理学 2025-03-06 Luca Mantani , Veronica Sanz

The striking success of the Standard Model in explaining precision data and, at the same time, its lack of explanations for various fundamental phenomena, such as dark matter or the baryon asymmetry of the universe, suggests new physics at…

高能物理 - 唯象学 · 物理学 2025-04-23 Gino Isidori , Felix Wilsch , Daniel Wyler

The framework of standard model effective field theory (SMEFT) provides a relatively model-agnostic tool with which to parameterize the off-shell effects of potential heavy new physics. In the top quark sector, the ATLAS and CMS experiments…

高能物理 - 实验 · 物理学 2023-11-22 Kelci Mohrman

We perform global fits within Standard Model Effective Field Theory (SMEFT) combining top-quark pair production processes and decay with $b\rightarrow s$ flavor changing neutral current transitions and $Z \to b \bar b$ in three stages:…

高能物理 - 唯象学 · 物理学 2021-06-16 Stefan Bißmann , Cornelius Grunwald , Gudrun Hiller , Kevin Kröninger

The equations of motion for the Standard Model Effective Field Theory (SMEFT) differ from those in the Standard Model. Corrections due to local contact operators modify the equations of motion and impact matching results at sub-leading…

高能物理 - 唯象学 · 物理学 2018-12-26 Abdurrahman Barzinji , Michael Trott , Anagha Vasudevan

We investigate the bounds which can be placed on generic new-physics contributions to dijet production at the LHC using the framework of the Standard Model Effective Field Theory, deriving the first consistently-treated EFT bounds from…

高能物理 - 唯象学 · 物理学 2018-02-14 Stefan Alte , Matthias König , William Shepherd

Future high-energy $\textrm{e}^+\textrm{e}^-$ colliders will provide some of the most precise tests of the Standard Model. Statistical uncertainties on electroweak precision observables and triple gauge couplings are expected to improve by…

高能物理 - 唯象学 · 物理学 2023-01-18 Jakob Beyer , Jenny List

We calculate the one- and two-loop matching corrections in the Standard Model effective field theory (SMEFT) that impact electroweak precision measurements and flavour physics observables, focusing on the contributions of third-generation…

高能物理 - 唯象学 · 物理学 2025-01-17 Ulrich Haisch , Luc Schnell

The Fermi effective theory of the weak interaction helped identify the structure of the electroweak sector of the Standard Model, and the chiral effective Lagrangian pointed towards QCD as the theory of the strong interactions. The Standard…

高能物理 - 唯象学 · 物理学 2021-06-01 John Ellis

The study of the processes with the production of top quarks represents a unique possibility to test the standard model (SM) predictions and probe the new physics effects. Potential deviations from the SM expectations are parametrized…

高能物理 - 实验 · 物理学 2020-08-17 Kirill Skovpen

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 Standard Model Effective Field Theory (SMEFT). For the first…

高能物理 - 唯象学 · 物理学 2021-05-19 John Ellis , Maeve Madigan , Ken Mimasu , Veronica Sanz , Tevong You

With no direct evidence for new physics at the TeV scale, deviations from the Standard Model (SM) can be explored systematically through Effective Field Theories (EFTs) such as the Standard Model EFT (SMEFT). SMEFT extends the SM by…

高能物理 - 实验 · 物理学 2026-02-04 Dongwon Kim

We present a novel framework for carrying out global analyses of the Standard Model Effective Field Theory (SMEFT) at dimension-six: SMEFiT. This approach is based on the Monte Carlo replica method for deriving a faithful estimate of the…

高能物理 - 唯象学 · 物理学 2019-05-01 Nathan P. Hartland , Fabio Maltoni , Emanuele R. Nocera , Juan Rojo , Emma Slade , Eleni Vryonidou , Cen Zhang

Quantum information observables, such as entanglement measures, provide a powerful way to characterize the properties of quantum states. We propose to use them to probe the structure of fundamental interactions and to search for new physics…

高能物理 - 唯象学 · 物理学 2022-09-21 Rafael Aoude , Eric Madge , Fabio Maltoni , Luca Mantani

We investigate constraints on couplings of Standard Model effective field theory (SMEFT) operators contributing to $Wtb$ effective vertex at tree level. We study the one-loop level impact of these couplings on the low-energy flavour…

高能物理 - 唯象学 · 物理学 2025-10-15 Subhajit Kala , Lipika Kolay , Lopamudra Mukherjee , Soumitra Nandi

The consistency relations in large scale structure relate the lower-order correlation functions with their higher-order counterparts. They are direct outcome of the underlying symmetries of a dynamical system and can be tested using data…

宇宙学与河外天体物理 · 物理学 2017-06-23 Dipak Munshi , Donough Regan

Future high-energy $e^+e^-$ colliders will provide some of the most precise tests of the Standard Model. Statistical uncertainties on electroweak precision observables and triple gauge couplings are expected to improve by orders of…

高能物理 - 实验 · 物理学 2021-11-15 Jakob Beyer , Jenny List

Given the absence of direct evidence for new resonances beyond the Standard Model (BSM) at the Large Hadron Collider (LHC) so far, a complementary strategy to search for new physics in an indirect way is provided by the Standard Model…

高能物理 - 唯象学 · 物理学 2025-01-16 Jaco ter Hoeve
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