Volume 314 - The European Physical Society Conference on High Energy Physics (EPS-HEP2017) - Dark Matter (Parallel Session). Coveners: Enrique Araujo; Caterina Doglioni; Alfredo Urbano. Scientific Secretary: Caterina Braggio.
Dark Matter signal from e+ / e- / p- with the AMS Detector on the International Space Station
N. Zimmermann* and  On behalf of the AMS Collaboration
*: corresponding author
Full text: pdf
Pre-published on: October 19, 2017
Published on: March 20, 2018
Abstract
The excess of the antiproton flux and the antiproton-to-proton flux ratio beyond the prediction of the collision of ordinary cosmic rays is a unique signal from dark matter models of neutralino annihilation. This excess cannot come from pulsars. We present precision measurements by AMS-02 of the antiproton flux and the antiproton-to-proton flux ratio in the absolute rigidity range from 1 to 450 GV based on 3.49×105 antiproton events and 2.42×109 proton events. Comparison of our results with neutralino annihilation model shows good agreement.

We also present the latest results on 16.5×106 electron and 1.08×106 positron events measured by the Alpha Magnetic Spectrometer on the International Space Station. The measurement covers the energy range up to 1000 GeV. The measured positron flux and the positron fraction are in agreement with a specific dark matter model with a neutralino mass of 1 TeV.
DOI: https://doi.org/10.22323/1.314.0090
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