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Precise tests of the axion coupling to tops
by Anh Vu Phan, Susanne Westhoff
This is not the latest submitted version.
Submission summary
| Authors (as registered SciPost users): | Anh Vu Phan |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2312.00872v2 (pdf) |
| Date submitted: | 2025-01-20 14:47 |
| Submitted by: | Phan, Anh Vu |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | The 17th International Workshop on Top Quark Physics (TOP2024) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Phenomenological |
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.
List of changes
I have modified the discussion immediately after equation 4. Hopefully, it is now clear that the ALP-top interaction feature presents in both bases, and that basis II serves to make such feature explicit.
I have added the definition to R(μ,Λ) immediately after equation 7.
I have added our choice of renormalizatoin and factorization scales to the beginning of section 4.