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Production and propagation of secondary antideuteron in the Galaxy
by Luis Fernando Galicia Cruztitla and Diego Mauricio Gomez Coral
Submission summary
| Authors (as registered SciPost users): | Luis Fernando Galicia Cruztitla |
| Submission information | |
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| Preprint Link: | scipost_202411_00001v1 (pdf) |
| Date submitted: | 2024-11-01 02:15 |
| Submitted by: | Galicia Cruztitla, Luis Fernando |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 22nd International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI 2024) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Phenomenological |
Abstract
This work reviews the current state of the antideuteron ($\bar{d}$) production cross-sections in cosmic ray interactions and its uncertainties, considering the coalescence model and measurements in accelerator experiments. These cross-sections have been included in a simulation of cosmic rays propagation in the Galaxy using GALPROP v.57, with updated parameters of the diffusive reacceleration model. An estimation of the expected antideuteron flux at Earth is presented.
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The article reviews the current state of the antideuteron production cross-sections and their uncertainties from the measurements at accelerators. An estimate of the expected cosmic-ray antideuteron flux at Earth using GALPROP modelling is presented by the authors. Though the paper is clear in the assumptions and conclusions, I have two important comments which I suggest that authors address before the publication:
1. The earlier calculations of the antideuteron flux at Earth should be properly acknowledged. For instance, the following articles arrive to very similar conclusions:
K. Blum, K. C. Yu. Ng, R. Sato, and M. Takimoto, Phys. Rev. D 96, 103021 (2017)
M. Korsmeier, F. Donato, and N. Fornengo, Phys. Rev. D 97, 103011 (2018)
…
2. In Figure 2 the authors refer to the AMS-02 sensitivity from Ref. [20], which in turn refers to the ICRC-2008 presentation describing AMS in superconducting magnet configuration with 3 years of data collection time. The AMS-02 Experiment with permanent magnet is collecting data for over 13 years. The current status and life-time projections of the AMS-02 sensitivity to antideuterons were presented at ICRC-2023 (a copy of this presentation with relevant slides is attached for reference - in particular, see p.15):
Z. Weng, presentation at the AMS special session at International Cosmic Ray Conference Jul. 28, 2023, Nagoya, Japan.
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