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arXiv · 2307.10372

A global analysis of axion-like particle interactions using SMEFT fits

Anke Biekötter·Javier Fuentes-Martín·Anne Mareike Galda·Matthias Neubert
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Abstract

In the presence of an axion or axion-like particle (ALP) that couples to the Standard Model via dimension-five interactions, dimension-six SMEFT interactions are generated via renormalization-group evolution. As many of these SMEFT contributions are experimentally tightly constrained, this "ALP-SMEFT interference" can be used to derive indirect bounds on the ALP couplings to the Standard Model particles. We present a global analysis of the Wilson coefficients of the ALP effective Lagrangian based on Higgs, top, and low-energy data. The obtained bounds are model independent and are competitive or even stronger than direct bounds in the GeV to TeV ALP-mass range.

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Anke Biekötter, Javier Fuentes-Martín, Anne Mareike Galda, Matthias Neubert. 2023-07-19. A global analysis of axion-like particle interactions using SMEFT fits. https://doi.org/10.1007/jhep09(2023)120

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