Results 11 to 20 of about 1,044 (153)
European Physical Journal C: Particles and Fields, 2023 This work is based on a bottom-up approach to the standard-model effective field theory (SMEFT), resulting in an equiprobable space of Wilson coefficients.
Federico Camponovo, Giampiero Passarino
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Journal of High Energy Physics, 2021 There are two canonical approaches to treating the Standard Model as an Effective Field Theory (EFT): Standard Model EFT (SMEFT), expressed in the electroweak symmetric phase utilizing the Higgs doublet, and Higgs EFT (HEFT), expressed in the broken ...
Timothy Cohen +3 more
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EWPD in the SMEFT to dimension eight [PDF]
Journal of High Energy Physics, 2021 We calculate the O H † H 2 / Λ 4 $$ \mathcal{O}\left({\left\langle {H}^{\dagger }H\right\rangle}^2/{\Lambda}^4\right) $$ corrections to LEP electroweak precision data using the geometric formulation of the Standard Model Effective Field Theory (SMEFT ...
Tyler Corbett +3 more
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On the non-minimal character of the SMEFT [PDF]
Physics Letters B, 2017 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 one dimension ...
Yun Jiang, Michael Trott
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European Physical Journal C: Particles and Fields, 2023 This document contains lectures on SMEFT, which is an effective field theory of the degrees of freedom of the Standard Model. The material is at a basic, introductory level, without assuming any prior knowledge of effective field theory techniques.
Adam Falkowski
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Adding Flavor to the SMEFT [PDF]
Journal of High Energy Physics, 2022 Abstract We study the flavor structure of the lepton and baryon number-conserving dimension-6 operators in the Standard Model effective field theory (SMEFT). Building on the work of [1], we define several well-motivated flavor symmetries and symmetry-breaking patterns that serve as competing hypotheses about the ultraviolet (UV ...
Admir Greljo +2 more
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Loop counting matters in SMEFT
SciPost Physics, 2023 We show that, in addition to the counting of canonical dimensions, a counting of loop orders is necessary to fully specify the power counting of Standard Model Effective Field Theory (SMEFT).
Gerhard Buchalla, Gudrun Heinrich, Christoph Müller-Salditt, Florian Pandler
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Towards the ultimate differential SMEFT analysis [PDF]
Journal of High Energy Physics, 2020 Abstract We obtain SMEFT bounds using an approach that utilises the complete multi-dimensional differential information of a process. This approach is based on the fact that at a given EFT order, the full angular distribution in the most important electroweak processes can be expressed as a sum of a fixed number of basis functions.
Shankha Banerjee +4 more
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Journal of High Energy Physics, 2022 Abstract We use the Fitmaker tool to incorporate the recent CDF measurement of mW in a global fit to electroweak, Higgs, and diboson data in the Standard Model Effective Field Theory (SMEFT) including dimension-6 operators at linear order. We find that including any one of the SMEFT operators $$ \mathcal{O} $$ O
Emanuele Bagnaschi +5 more
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SMEFT atlas of ∆F = 2 transitions [PDF]
Journal of High Energy Physics, 2020 We present a model-independent anatomy of the ∆F = 2 transitions K 0 − K ¯ 0 $$ {\overline{K}}^0 $$ , B s,d − B ¯ s , d $$ {\overline{B}}_{s,d} $$ and D 0 − D ¯ 0 $$ {\overline{D}}^0 $$ in the context of the Standard Model Effective Field Theory (SMEFT).
Jason Aebischer +3 more
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