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相关论文: Shift-Type SMEFT Effects in Dileptons at the LHC

200 篇论文

We study the Standard Model effective field theory ($\nu$SMEFT) extended with operators involving right-handed neutrinos, focussing on the regime where the right-handed neutrinos decay promptly on collider scales to a photon and a Standard…

高能物理 - 唯象学 · 物理学 2021-02-03 Anke Biekötter , Mikael Chala , Michael Spannowsky

We study whether higher-dimensional operators in effective field theories, in particular in the Standard Model Effective Field Theory (SMEFT), can source gauge anomalies via the modification of the interactions involved in triangle…

高能物理 - 唯象学 · 物理学 2021-06-30 Quentin Bonnefoy , Luca Di Luzio , Christophe Grojean , Ayan Paul , Alejo N. Rossia

We consider the associated production of a Higgs boson and a photon in weak boson fusion in the Standard Model (SM) and the Standard Model Effective Theory (SMEFT), with the Higgs boson decaying to a pair of bottom quarks. Analysing events…

高能物理 - 唯象学 · 物理学 2021-01-20 Anke Biekötter , Raquel Gomez-Ambrosio , Parisa Gregg , Frank Krauss , Marek Schönherr

We perform a global analysis of the bounds from charged lepton flavour violating observables to new physics. We parametrize generic new physics through the Effective Field Theory formalism and perform global fits beyond the common…

高能物理 - 唯象学 · 物理学 2025-10-07 Enrique Fernández-Martínez , Xabier Marcano , Daniel Naredo-Tuero

We present a momentum-dependent reweighting strategy to extend current LHC di-Higgs analyses within the $\kappa$-framework and SMEFT into the bosonic sector of the Higgs Effective Field Theory (HEFT). Unlike SMEFT, where symmetry…

高能物理 - 唯象学 · 物理学 2025-06-25 Christoph Englert , Tom Ingebretsen Carlson , Jörgen Sjölin , Michael Spannowsky

The tails of diboson production at the LHC are sensitive to the interference between Standard Model and higher dimension operators parameterizing the effects of heavy new physics. However, helicity selection rules for the diboson scattering…

高能物理 - 唯象学 · 物理学 2019-08-07 Rafael Aoude , William Shepherd

We review the status of calculations in the Standard Model Effective Field Theory (SMEFT) beyond leading order (LO). Improving the SMEFT beyond LO allows theoretical errors to be characterized and reduced when considering SMEFT…

高能物理 - 唯象学 · 物理学 2016-10-27 Giampiero Passarino , Michael Trott

We analyse the constraints on models of WIMP Dark Matter that can be derived from upper bounds on the "monojet" cross section at the LHC. These constraints were originally interpreted in the context of an effective field theory (EFT) where…

高能物理 - 唯象学 · 物理学 2018-09-19 Swasti Belwal , Manuel Drees , Jong Soo Kim

We study the impact of LHC forward-backward asymmetry (AFB) measurements at high invariant-mass in the Drell-Yan process on probes of semileptonic four-fermion operators in the Standard Model effective field theory (SMEFT). In particular,…

高能物理 - 唯象学 · 物理学 2023-10-19 Radja Boughezal , Yingsheng Huang , Frank Petriello

We study the dimension-six SMEFT four-lepton operators in the $\mu$--$\tau$ sector. These operators control both charged-lepton scattering and neutrino self-interactions, the latter being weakly constrained by direct laboratory probes…

高能物理 - 唯象学 · 物理学 2026-05-01 Aadarsh Singh , G. D'Ambrosio , Sudhir K. Vempati

The shift in focus towards searches for physics beyond the Standard Model (SM) employing model-independent Effective Field Theory (EFT) methods necessitates a rigorous approach to matching to guarantee the validity of the obtained results…

高能物理 - 唯象学 · 物理学 2023-03-29 Upalaparna Banerjee , Joydeep Chakrabortty , Christoph Englert , Shakeel Ur Rahaman , Michael Spannowsky

We explore the impact of Renormalisation Group (RG) effects in the Standard Model Effective Field Theory (SMEFT) interpretations of LHC measurements. We implement the RG running and mixing for the Wilson coefficients as obtained from the…

高能物理 - 唯象学 · 物理学 2023-03-21 Rafael Aoude , Fabio Maltoni , Olivier Mattelaer , Claudio Severi , Eleni Vryonidou

The Standard Model Effective Field Theory (SMEFT) provides a powerful, model-independent framework to explore deviations from the Standard Model (SM) by parametrising potential new physics through higher-dimensional operators. This thesis…

高能物理 - 唯象学 · 物理学 2026-02-06 Álvaro Díaz-Carmona

A model-independent anatomy of $\Delta F= 2$ transitions in the context of the Weak Effective Theory (WET) below the electroweak scale (EW) and the Standard Model Effective Field Theory (SMEFT) above the EW scale is discussed. Two master…

高能物理 - 唯象学 · 物理学 2022-02-22 Jason Aebischer

We perform for the first time a full study of spin correlations in inclusive WZ production at the LHC with leptonic decays in the presence of NLO QCD corrections and of effects from a dimension-six operator in the SMEFT modifying the…

高能物理 - 唯象学 · 物理学 2026-01-15 Giovanni Pelliccioli , Emanuele Re

In this paper, we investigate the effects of dimension six operators in the framework of the standard model (SM) effective field theory on using $t\bar{t}b\bar{b}$ channel at the LHC with the center-of-mass energy of 13 TeV. In this…

高能物理 - 唯象学 · 物理学 2018-07-13 Hoda Hesari

We investigate the high-$p_T$ tails of the $pp\to \ell \nu$ and $pp \to \ell \ell$ Drell-Yan processes as probes of New Physics in semileptonic interactions with an arbitrary flavor structure. For this purpose, we provide a general…

高能物理 - 唯象学 · 物理学 2023-03-20 Lukas Allwicher , Darius A. Faroughy , Florentin Jaffredo , Olcyr Sumensari , Felix Wilsch

We present the Standard Model Effective Field Theories (SMEFT) from purely on-shell arguments. Starting from a few basic assumptions such as Poincar\'e invariance and locality, we classify all the renormalisable and non-renormalisable…

高能物理 - 理论 · 物理学 2022-05-04 Manuel Accettulli Huber , Stefano De Angelis

The Drell-Yan process is a copious source of lepton pairs at high energy and is measured with great precision at the Large Hadron Collider (LHC). Barring any new light particles, beyond the Standard Model effects can be studied in Drell-Yan…

高能物理 - 唯象学 · 物理学 2019-03-06 S. Dawson , P. P. Giardino , A. Ismail

We present the renormalisation group running of the bosonic operators of the Standard Model effective field theory by the Lepton Number Violating operators (LNVs) at 1-loop order up to $\mathcal{O}(v^4/\Lambda^4)$, with $v \sim 246$ GeV as…

高能物理 - 唯象学 · 物理学 2023-07-12 Supratim Das Bakshi , Álvaro Díaz-Carmona