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The Standard Model effective field theory (SMEFT) is the tool of choice for studying deviations of Higgs couplings from the Standard Model predictions. The SMEFT is an expansion in an infinite tower of higher dimension operators, which is…

高能物理 - 唯象学 · 物理学 2023-05-12 Sally Dawson , Duarte Fontes , Samuel Homiller , Matthew Sullivan

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

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

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

We use the on-shell S-matrix and form factors to compute anomalous dimensions of higher dimension operators in the Standard Model Effective Field Theory. We find that in many instances, these computations are made simple by using the…

高能物理 - 唯象学 · 物理学 2020-12-21 Joan Elias Miró , James Ingoldby , Marc Riembau

We present a complete basis of dimension-8 operators in the Standard Model Effective Field Theory. Attention is paid to operators that vanish in the absence of flavor structure. There are dimension-8 SMEFT 44,807 operators. We also briefly…

高能物理 - 唯象学 · 物理学 2022-07-27 Christopher W. Murphy

Standard Model Neutrino Effective Field Theory (SMNEFT) is an effective theory with Standard Model (SM) gauge-invariant operators constructed only from SM and right-handed neutrino fields. For the full set of dimension-six SMNEFT operators,…

高能物理 - 唯象学 · 物理学 2021-02-03 Alakabha Datta , Jacky Kumar , Hongkai Liu , Danny Marfatia

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

Nowadays, the Standard Model Effective Field Theory (SMEFT) provides a standard framework to parameterize potential deviations from the Standard Model and to combine information from multiple processes in global analyses. This review…

高能物理 - 唯象学 · 物理学 2026-03-19 A. Aleshko , E . Boos , V. Bunichev , L. Dudko

When integrating out unknown new physics sectors, what is the minimal character of the Standard Model Effective Field Theory (SMEFT) that can result? In this paper we focus on a particular aspect of this question: "How can one obtain only…

高能物理 - 唯象学 · 物理学 2017-04-28 Yun Jiang , Michael Trott

There is increasing need to assess the impact and the interpretation of dim = 6 and dim = 8 operators within the context of the Standard Model Effective Field Theory (SMEFT). The observational and mathematical consistency of a construct…

高能物理 - 唯象学 · 物理学 2019-02-07 Giampiero Passarino

The Standard Model Effective Field Theory (SMEFT) provides a powerful theoretical framework for searching for subtle deviations from the Standard Model. In this talk, we present the results from a global fit of the dimension-6 operators of…

高能物理 - 唯象学 · 物理学 2022-12-02 Maeve Madigan

In Effective Field Theories (EFTs) with higher-dimensional operators many anomalous dimensions vanish at the one-loop level for no apparent reason. With the use of supersymmetry, and a classification of the operators according to their…

高能物理 - 唯象学 · 物理学 2016-04-15 J. Elias-Miro , J. R. Espinosa , A. Pomarol

We classify the physical operators of the most general bosonic effective gauge theory up to dimension six using on-shell methods. Based on this classification, we compute the complete one-loop anomalous dimension employing both on-shell…

高能物理 - 唯象学 · 物理学 2026-05-29 Jason Aebischer , Luigi C. Bresciani , Nudzeim Selimovic

The Standard Model Effective Field Theory (SMEFT) provides a robust framework for probing deviations in the couplings of Standard Model particles from their theoretical predictions. This framework relies on an expansion in…

高能物理 - 唯象学 · 物理学 2025-01-22 Nilabhra Adhikary , Tisa Biswas , Joydeep Chakrabortty , Christoph Englert , Michael Spannowsky

We construct accidentally symmetric potentials in the framework of Two Higgs Model Effective Field Theory (2HDMEFT) including higher-order operators of dimension 6 and dimension 8. Our construction is facilitated by an earlier developed…

高能物理 - 唯象学 · 物理学 2020-09-25 Callum Birch-Sykes , Neda Darvishi , Yvonne Peters , Apostolos Pilaftsis

The Standard Model Effective Field Theory (SMEFT) is the parametrization chosen to interpret many modern measurements. We have recently discussed, building on the work of other groups, that its overall framework can be experimentally…

高能物理 - 唯象学 · 物理学 2023-01-11 Alexandre Salas-Bernardez , Juan J. Sanz-Cillero , Felipe J. Llanes-Estrada , Raquel Gomez-Ambrosio

The gauge-invariant operators up to dimension six in the low-energy effective field theory below the electroweak scale are classified. There are 70 Hermitian dimension-five and 3631 Hermitian dimension-six operators that conserve baryon and…

高能物理 - 唯象学 · 物理学 2024-03-21 Elizabeth E. Jenkins , Aneesh V. Manohar , Peter Stoffer

Until recently little was known about the high-dimensional operators of the standard model effective field theory (SMEFT). However, in the past few years the number of these operators has been counted up to mass dimension 15 using…

高能物理 - 唯象学 · 物理学 2020-04-10 Renato M. Fonseca

We present a complete list of the independent dimension-7 operators that are constructed using the Standard Model degrees of freedom and are invariant under the Standard Model gauge group. This list contains only 20 independent operators;…

高能物理 - 唯象学 · 物理学 2014-12-30 Landon Lehman
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