Top observables as precise probes of the ALP
High Energy Physics - Phenomenology
2026-02-04 v2 High Energy Physics - Experiment
Abstract
Measurements of the top quark by the ATLAS and CMS experiments go beyond testing the Standard Model (SM) with high precision. Axion-like particles (ALPs), a potential SM extension involving new pseudoscalar particles, exhibit strong interactions with heavy SM fermions. Consequently, they can significantly affect the kinematic distributions of top quarks in top-antitop pair production. Moreover, such strong interactions can induce other ALP couplings at low energies, leading to a rich phenomenology. We summarize recent developments in probing the ALP-top coupling and use LHC data from run 2 to constrain the ALP parameter space.
Keywords
Cite
@article{arxiv.2412.06506,
title = {Top observables as precise probes of the ALP},
author = {Anh Vu Phan},
journal= {arXiv preprint arXiv:2412.06506},
year = {2026}
}
Comments
7 pages, 4 figures. Talk at the 17th International Workshop on Top Quark Physics (Top2024), 22-27 September 2024