Results 31 to 40 of about 4,794 (202)
Determining SMEFT and PDF parameters simultaneously based on the CTEQ-TEA framework [PDF]
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2023)The SM effective field theory (SMEFT) provides a model-independent and systematically improv-able framework for new physics searches. In this talk, we outline our approach to simultaneously fitting SMEFT parameters and Probability Density Functions (PDFs)
XiaoMin Shen +4 more
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SMEFT predictions for semileptonic processes [PDF]
Physical Review DThe SU(2)L×U(1)Y invariance of the Standard Model effective field theory (SMEFT) predicts multiple restrictions in the space of Wilson coefficients of U(1)em invariant effective Lagrangians such as the low-energy effective field theory (LEFT), used for ...
S. Karmakar, Amol Dighe, Rick S. Gupta
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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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Building blocks of the flavourful SMEFT RG [PDF]
Journal of High Energy Physics, 2022 Abstract A powerful aspect of effective field theories is connecting scales through renormalisation group (RG) flow. The anomalous dimension matrix of the Standard Model Effective Field Theory (SMEFT) encodes clues to where to find relics of heavy new physics in data, but its unwieldy 2499 × 2499 size (at operator dimension 6 ...
Camila S. Machado +2 more
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ALP — SMEFT interference [PDF]
Journal of High Energy Physics, 2021 Abstract The Standard Model Effective Field Theory (SMEFT) offers a powerful theoretical framework for parameterizing the low-energy effects of heavy new particles with masses far above the scale of electroweak symmetry breaking. Additional light degrees of freedom extend the effective theory.
Sophie Renner +4 more
openaire +4 more sources
The top quark legacy of the LHC Run II for PDF and SMEFT analyses [PDF]
Journal of High Energy Physics, 2023 We assess the impact of top quark production at the LHC on global analyses of parton distributions (PDFs) and of Wilson coefficients in the SMEFT, both separately and in the framework of a joint interpretation.
Z. Kassabov +6 more
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Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2017), 2017 5 + 1 pages, 2 figures. Contribution to the proceedings of EPS-HEP 2017, European Physical Society conference on High Energy Physics, 5-12 July 2017, Venice ...
Ilaria Brivio
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Impact of dimension-8 SMEFT operators on diboson productions [PDF]
Journal of High Energy Physics, 2023 We for the first time identify all the dimension-8 (dim-8) SMEFT operators that can have an interference with the SM with E4/Λ4 enhancement in the high energy limit for the processes qq¯→WW/WZ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{
C. Degrande, Hao-Lin Li
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An EFT hunter’s guide to two-to-two scattering: HEFT and SMEFT on-shell amplitudes [PDF]
Journal of High Energy Physics, 2023 We derive the contact terms contributing to the four-point amplitudes of the standard model particles, keeping terms with up to quartic energy growth. Imposing just the unbroken low-energy symmetry, and treating the electroweak gauge bosons and the Higgs
Hongkai Liu +3 more
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A global analysis of the SMEFT under the minimal MFV assumption [PDF]
Journal of High Energy Physics, 2023 We present comprehensive global fits of the SMEFT under the minimal minimal flavour violation (MFV) hypothesis, i.e. assuming that only the flavour-symmetric and CP-invariant operators are relevant at the high scale.
Riccardo Bartocci +2 more
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