AMS-02 antiprotons from annihilating or decaying dark matter
نویسندگان
چکیده
منابع مشابه
AMS-02 antiprotons, at last! Secondary astrophysical component and immediate implications for Dark Matter
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 coe...
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We show that in the scenario where dark matter (DM) particles annihilate through light mediators, the energy spectra of the final state cosmic-ray particles depend strongly on the mediator mass. For final state antiprotons, a spectrum with relatively narrow peak occurs when the mediator mass is comparable to the p̄p production threshold. Of interest, the latest AMS-02 data on the p̄/p flux ratio ...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2015
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2015.06.041