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arXiv · 2312.00872

Precise tests of the axion coupling to tops

Anh Vu Phan·Susanne Westhoff
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Abstract

We present an in-depth analysis of axions and axion-like particles in top-pair production at the LHC. Our main goal is to probe the axion coupling to top quarks at high energies. To this end, we calculate the top-antitop cross section and differential distributions including ALP effects up to one-loop level. By comparing these predictions with LHC precision measurements, we constrain the top coupling of axion-like particles with masses below the top-antitop threshold. Our results apply to all UV completions of the ALP effective theory with dominant couplings to top quarks, in particular to DFSZ-like axion models.

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Anh Vu Phan, Susanne Westhoff. 2023-12-01. Precise tests of the axion coupling to tops. https://doi.org/10.1007/jhep05(2024)075

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