14th International Conference on Topics in Astroparticle and Underground Physics | |
AMS-02 antiprotons: implications for dark matter | |
物理学;天文学 | |
Boudaud, Mathieu^1 | |
LAPTh, Université Savoie Mont Blanc, CNRS, Annecy-le-Vieux | |
F-74941, France^1 | |
关键词: Dark matter; Energy dependence; Helium flux; Stringent constraints; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/718/4/042006/pdf DOI : 10.1088/1742-6596/718/4/042006 |
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学科分类:天文学(综合) | |
来源: IOP | |
【 摘 要 】
Using the updated proton and helium fluxes just released by the Ams-02 experiment we reevaluate the secondary astrophysical antiproton to proton ratio and its uncertainties, and compare it with the ratio preliminarly reported by AMS-02. We find no unambiguous evidence for a significant excess with respect to expectations. Yet, some preference for a flatter energy dependence of the diffusion coefficient (with respect to the Med benchmark often used in the literature) starts to emerge. Finally, we provide a first assessment of the room left for exotic components such as Galactic Dark Matter annihilation, deriving new stringent constraints.
【 预 览 】
Files | Size | Format | View |
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AMS-02 antiprotons: implications for dark matter | 1314KB | download |