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AMS-02 antiprotons are consistent with a secondary astrophysical origin

par Boudaud, Mathieu;Genolini, Yoann ;Derome, Laurent;Lavalle, Julien;Maurin, David;Salati, Pierre;Serpico, Pasquale Dario
Référence Pos proceedings of science, 358
Publication Publié, 2019

Article révisé par les pairs

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Résumé :

The AMS-02 experiment has ushered cosmic-ray physics into precision era. Using the USINE code and an improved methodology, we extract the cosmic-ray transport parameters from the B/C data. We then derive a robust range of predictions for the secondary antiprotons flux, accounting for several sources of uncertainties and their correlations. Combined with a correlation matrix of systematic errors for the antiprotons data, we show that the latter are consistent with a secondary origin. We present key elements relevant to dark matter search in this channel, notably by pointing out the inherent difficulties in achieving predictions at the percent-level precision.