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We discuss the implications of dimension-six operators of the Effective Field Theory (EFT) framework in the study of Vector Boson Scattering (VBS) in the $pp \to Z Z j j $ channel. We show that operators of dimension-six should not be…

高能物理 - 唯象学 · 物理学 2019-05-22 Raquel Gomez-Ambrosio

We analyse the single top production in association with the Higgs at the Large Hadron Collider (LHC) using Standard Model (SM) effective operators upto dimension six. We show that the presence of effective operators can significantly alter…

高能物理 - 唯象学 · 物理学 2023-09-07 Subhaditya Bhattacharya , Sanjoy Biswas , Kuntal Pal , Jose Wudka

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

I summarize phenomenological LHC13 studies of the effect of dimension six effective operators on the inclusive cross section and differential distributions for the t-channel single top process at NLO in QCD.

高能物理 - 唯象学 · 物理学 2018-11-30 Marc de Beurs

We study the impact of $q \bar q' W$ and $q \bar q' WH$ interactions, originating from dimension-six operators of the Standard Model Effective Field Theory (SMEFT), on the Higgs boson associated production $pp \to W^+H$ at the LHC. We…

We investigate lepton number violation (LNV) induced by $\Delta L = 2$ dimension-seven Standard Model Effective Field Theory (SMEFT) operators in the context of same-sign muon colliders. Specifically, we study $\mu^+ \mu^+ \rightarrow…

高能物理 - 唯象学 · 物理学 2026-03-31 Subhaditya Bhattacharya , Soumyajit Datta , Abhik Sarkar

We perform a systematic study of lepton-number-violating (LNV) dimension-9 operators in the Standard Model Effective Field Theory (SMEFT) that can mediate neutrinoless double beta decay ($0\nu\beta\beta$) at tree level, and map them to…

高能物理 - 唯象学 · 物理学 2026-02-23 Fabian Esser , Lukáš Gráf , Chandan Hati

The Standard Model Effective Field Theory (SMEFT) is constrained by current LHC data. Supposedly extensions of the Standard Model (SM) involving heavy particles can be constrained by matching onto the SMEFT. However, the reliability of…

高能物理 - 唯象学 · 物理学 2025-06-17 Manuel Drees , Cong Zhang

We calculate a set of one-loop corrections to $h\to b\bar b$ and $h\to \tau\bar \tau$ decays in the dimension-6 Standard Model effective field theory (SMEFT). In particular, working in the limit of vanishing gauge couplings, we calculate…

高能物理 - 唯象学 · 物理学 2016-10-26 Rhorry Gauld , Benjamin D. Pecjak , Darren J. Scott

We study the next-to-leading order electroweak corrections to Higgs processes from dimension-six top-quark operators in the Standard Model Effective Field Theory approach. We consider the major production channels, including $WH$, $ZH$, and…

高能物理 - 唯象学 · 物理学 2018-10-02 Eleni Vryonidou , Cen Zhang

We study the effects of four-heavy-quark operators in the production of top quarks in the framework of the Standard Model Effective Field Theory (SMEFT) at the LHC. In particular, we compute for the first time the total contribution of the…

高能物理 - 唯象学 · 物理学 2024-06-24 Celine Degrande , Rogerio Rosenfeld , Andres Vasquez

Gluon-gluon to photon-photon scattering $gg \to \gamma\gamma$ offers to the LHC experiments a uniquely powerful probe of dimension-8 operators in the Standard Model Effective Field Theory (SMEFT) that are quadratic in both the…

高能物理 - 唯象学 · 物理学 2018-08-01 John Ellis , Shao-Feng Ge

The Standard Model effective field theory (SMEFT) provides a general framework to include the dynamics of the beyond standard model physics residing at a certain higher energy scale $\Lambda$. We study the top-quark production along with a…

高能物理 - 唯象学 · 物理学 2022-12-07 Monoranjan Guchait , Arnab Roy

In the context of the Standard Model effective field theory (SMEFT), we study the LHC sensitivity to four fermion operators involving heavy quarks by employing cross section measurements in the $t\bar{t}b\bar{b}$ final state. Starting from…

高能物理 - 唯象学 · 物理学 2018-12-06 Jorgen D'Hondt , Alberto Mariotti , Ken Mimasu , Seth Moortgat , Cen Zhang

In the context of the Standard Model effective field theory (SMEFT), we study the LHC sensitivity to four fermion operators involving heavy quarks by employing cross section measurements in the $t\bar{t}b\bar{b}$ final state. Starting from…

高能物理 - 唯象学 · 物理学 2018-11-26 Jorgen D'Hondt , Alberto Mariotti , Ken Mimasu , Seth Moortgat , Cen Zhang

We explore the sensitivity of Tevatron data to heavy new physics effects in differential dijet production rates using the SMEFT in light of the fact that consistent and conservative constraints from the LHC cannot cover relatively low…

高能物理 - 唯象学 · 物理学 2019-10-02 Eduard Keilmann , William Shepherd

We study single-top production in association with a $W$ boson at the Large Hadron Collider (LHC) as a probe of dimension-6 Standard Model effective field theory (SMEFT) at leading order, next-to-leading order, and approximate…

高能物理 - 唯象学 · 物理学 2026-05-07 Nikolaos Kidonakis , Kaan Şimşek

We present a study of di-lepton production at the CERN Large Hadron Collider with a particular focus on the contribution resulting from both real and virtual photons in the initial state. We discuss the region of phase space in which the…

高能物理 - 唯象学 · 物理学 2017-04-19 Elena Accomando , Juri Fiaschi , Francesco Hautmann , Stefano Moretti , Claire H. Shepherd-Themistocleous

We present a global analysis of lepton-flavor-specific operators in the Standard Model Effective Field Theory (SMEFT), combining data from collider and flavor physics experiments. We systematically explore various lepton-flavor scenarios,…

高能物理 - 唯象学 · 物理学 2025-11-11 Cornelius Grunwald , Gudrun Hiller , Kevin Kröninger , Lara Nollen

New Physics that becomes relevant at some high scale $\Lambda$ beyond the experimental reach, can be described in the effective theory approach by adding higher-dimensional operators to the Standard Model (SM) Lagrangian. In Higgs pair…

高能物理 - 唯象学 · 物理学 2015-10-28 Ramona Grober , Margarete Muhlleitner , Michael Spira , Juraj Streicher