Mass of Decaying Wino from AMS-02 2014

TL;DR

This paper analyzes recent AMS-02 cosmic ray data to support the hypothesis that decaying wino dark matter with a mass of a few TeV explains observed positron excesses, aligning with pure gravity mediation predictions.

Contribution

It revisits the decaying wino dark matter scenario using updated cosmic ray data, confirming the favored mass range around a few TeV.

Findings

AMS-02 data favors wino mass around a few TeV

Results are consistent with pure gravity mediation model

Supports decaying wino as a dark matter candidate

Abstract

We revisit the decaying wino dark matter scenario in the light of the updated positron fraction, electron and positron fluxes in cosmic ray recently reported by the AMS-02 collaboration. We show the AMS-02 results favor the mass of the wino dark matter at around a few TeV, which is consistent with the prediction on the wino mass in the pure gravity mediation model.