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Limits to gauge coupling in the dark sector of super-heavy dark matter particles from the Pierre Auger Observatory data
by Olivier Deligny for the Pierre Auger Collaboration
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Submission summary
| Authors (as registered SciPost users): | Olivier Deligny |
| Submission information | |
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| Preprint Link: | scipost_202209_00056v1 (pdf) |
| Date accepted: | 2023-08-28 |
| Date submitted: | 2022-09-27 12:48 |
| Submitted by: | Deligny, Olivier |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 21st International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI2022) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Experimental |
Abstract
Assuming that the energy density of super-heavy particles matches that of dark matter observed today, tight constraints on the couplings governing the decay process are presented as a function of the particle mass. These constraints are obtained from the lack of signatures that would be suggestive of decaying super-heavy $X$ particles in the data of the Pierre Auger Observatory. In particular, instanton-induced decay processes allow us to derive a bound on the reduced coupling constant of gauge interactions in the dark sector: \boldmath $\alpha_X \lesssim 0.09$,\unboldmath\, for \boldmath $10^{9} \lesssim M_X/\mathrm{GeV} < 10^{19}$\unbolmath . Cosmological aspects for super-heavy dark matter production during the reheating epoch are discussed.
Published as SciPost Phys. Proc. 13, 013 (2023)
Reports on this Submission
Report 1 by Subir Sarkar on 2022-11-21 (Contributed Report)
- Cite as: Subir Sarkar, Report on arXiv:scipost_202209_00056v1, delivered 2022-11-21, doi: 10.21468/SciPost.Report.7724
Report
In the present manuscript this observational constraint is translated (as seen in Figure 1) into one on the decay process (assuming it to be mediated by instantons). The implied limit on the gauge coupling in the dark sector is reasonable if unsurprising. The paper is reasonably well-written and is suitable for publication in a Conference Proceedings.