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Constraints on Heavy Dark Matter Annihilation and Decay from Electron and Positron Cosmic Ray Spectra
by Holger Motz
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Submission summary
| Authors (as registered SciPost users): | Holger Motz |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202210_00006v1 (pdf) |
| Date accepted: | 2023-04-24 |
| Date submitted: | 2022-10-02 06:54 |
| Submitted by: | Motz, Holger |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 14th International Conference on Identification of Dark Matter (IDM2022) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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Abstract
Annihilation or decay of dark matter (DM) could contribute to the electron and positron cosmic-ray flux, allowing for constraints on DM parameters from its measurement. CALET is directly measuring the energy spectrum of electron+positron cosmic rays up into the TeV region most important for studying heavy DM, while AMS-02 provides a positron-only spectrum below the TeV range. Limits on DM annihilation and decay well into the TeV mass range have been derived from a combined analysis of both data-sets with an astrophysical background model including pulsars as the origin of the positron excess and individual nearby supernova remnant sources.
Published as SciPost Phys. Proc. 12, 035 (2023)
Reports on this Submission
Report #1 by Anonymous (Referee 1) on 2022-10-21 (Invited Report)
- Cite as: Anonymous, Report on arXiv:scipost_202210_00006v1, delivered 2022-10-21, doi: 10.21468/SciPost.Report.5954
Strengths
1. This manuscript studies the limits on decaying and annihilating dark matter with CALET all-electron data and AMS-02 positron data.
2. With a fixed propagation model , the study gives one of the strongest bounds on dark matter decay and annihilation in the mass region of 0.1 - 10 TeV.
Report
This submission provides enough interesting results, and meets the criteria of SciPost Physics Proceedings. So it should be accepted for publication here.