| Article | |
| Report number | arXiv:1911.12364 ; UMD-PP-019-07 |
| Title | High Quality QCD Axion and the LHC |
| Author(s) | Hook, Anson (Maryland U.) ; Kumar, Soubhik (Maryland U.) ; Liu, Zhen (Maryland U.) ; Sundrum, Raman (Maryland U.) |
| Publication | 2020-06-02 |
| Imprint | 2019-11-27 |
| Number of pages | 7 |
| Note | 8+8 pages, 9 figures, 1 table |
| In: | Phys. Rev. Lett. |
| DOI | 10.1103/PhysRevLett.124.221801 10.1103/PhysRevLett.124.221801 (publication) |
| Subject category | hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology |
| Accelerator/Facility, Experiment | CERN LHC |
| Abstract | The QCD axion provides an elegant solution to the Strong CP Problem. While the minimal realization is vulnerable to the so-called "Axion Quality Problem", we will consider a more robust realization in the presence of a mirror sector related to the Standard Model by a (softly broken) $\mathbb{Z}_2$ symmetry. We point out that the resulting "heavy" axion, while satisfying all theoretical and observational constraints, has a large and uncharted parameter space which allows it to be probed at the LHC as a Long-Lived Particle (LLP). The small defining axionic coupling to gluons results in a challenging hadronic decay signal which we argue can be distinguished against the background in such a long-lived regime, and yet, the same coupling allows for sufficient production at hadron colliders thanks to the large gluon parton luminosity. Our study opens up a new window towards accelerator observable axions, and more generally, singly produced LLPs. |
| Copyright/License | publication: © 2020-2025 authors preprint: (License: CC-BY-4.0) CC-BY-4.0 |
Corresponding record in: Inspire
Notice créée le 2020-09-05, modifiée le 2024-10-30
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