TY  - JOUR
AU  - Lessa, A.
AU  - Sanz, V.
PY  - 2024
DA  - 2024//
TI  - Going beyond Top EFT
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 107
EP  - 29pp
VL  - 04
IS  - 4
PB  - Springer
KW  - SMEFT
KW  - Dark Matter at Colliders
KW  - Supersymmetry
AB  - We present a new way to interpret Top Standard Model measurements going beyond the SMEFT framework. Instead of the usual paradigm in Top EFT, where the main effects come from tails in momenta distributions, we propose an interpretation in terms of new physics which only shows up at loop-level. The effects of these new states, which can be lighter than required within the SMEFT, appear as distinctive structures at high momenta, but may be suppressed at the tails of distributions. As an illustration of this phenomena, we present the explicit case of a UV model with a Z \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \mathcal{Z} $$\end{document} 2 symmetry, including a Dark Matter candidate and a top-partner. This simple UV model reproduces the main features of this class of signatures, particularly a momentum-dependent form factor with more structure than the SMEFT. As the new states can be lighter than in SMEFT, we explore the interplay between the reinterpretation of direct searches for colored states and Dark Matter, and Top measurements, made by ATLAS and CMS in the differential t t over bar \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ t\overline{t} $$\end{document} final state. We also compare our method with what one would expect using the SMEFT reinterpretation, finding that using the full loop information provides a better discriminating power.
SN  - 1029-8479
UR  - https://arxiv.org/abs/2312.00670
UR  - https://doi.org/10.1007/JHEP04(2024)107
DO  - 10.1007/JHEP04(2024)107
LA  - English
N1  - WOS:001205498200004
ID  - Lessa+Sanz2024
ER  -