Abstract
In a recent work, we emphasized that an excess in tri-lepton events plus
missing energy observed by the ATLAS experiment at the LHC could be interpreted
as a signal of low energy supersymmetry. In such a scenario the lightest
neutralino mass is approximately $m_60$ GeV and the direct Dark
Matter detection cross section is naturally below the current bound. In this
work we present simple extensions of this scenario that lead to an explanation
of the gamma ray excess at the center of the galaxy observed by Fermi-LAT, as
well as the anti-proton excess observed by AMS-02. These extensions include the
addition of a small CP violating phase in the neutralino sector or the addition
of a light CP-odd Higgs scalar. Our study is of special relevance in view of a
recent analysis that casts doubt on the previously accepted preference for
mili-second pulsars as the origin of the galactic center excess.
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