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Author  |
Gargalionis, J.; Quevillon, J.; Vuong, P.N.H.; You, T. |
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Title |
Linear Standard Model extensions in the SMEFT at one loop and Tera-Z |
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Journal Article |
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Year |
2025 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
07 |
Issue |
7 |
Pages |
136 - 34pp |
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Keywords |
Electroweak Precision Physics; SMEFT |
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Abstract |
Linear Standard Model (SM) extensions, defined as new particles that can couple linearly to SM fields, form a motivated and finite set of simplified models for exploring phenomenology Beyond the SM (BSM). Heavy BSM particles may be integrated out to obtain their low-energy effects in the SM Effective Field Theory (SMEFT) parametrised by the Wilson coefficients of higher-dimensional operators. We compute and map the dimension-6 SMEFT operator structure of all scalar and fermion linear SM extensions up to one-loop order, thus extending the existing tree-level dictionary of results. Explicit analytic matching expressions for the Wilson coefficients are provided as both Python and Mathematica code in a GitHub repository accessible through links embedded in our main table for each coefficient and within a Python package. We apply our map to highlight the sensitivity to heavy new physics of a Z-pole run at a future Tera-Z factory; at one loop, with unit couplings, all linear SM extensions can be indirectly probed by electroweak precision measurements up to O10\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \mathcal{O}(10) $$\end{document} TeV. |
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Address |
[Gargalionis, John] Univ Valencia, Dept Fis Teor, Burjassot 46100, Spain, Email: john.gargalionis@adelaide.edu.au; |
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Publisher |
Springer |
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English |
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Notes |
WOS:001528607500005 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6753 |
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