Antideuterons as a Signature of Supersymmetric Dark Matter

Details Antideuterons as a Signature of Supersymmetric Dark Matter Antideuterons as a Signature of Supersymmetric Dark Matter

1999-04-28

arxiv.org/abs/hep-ph/9904481v1

Phys.Rev.D62:043003,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 9 figures

Scientific paper

10.1103/PhysRevD.62.043003

Once the energy spectrum of the secondary component is well understood, measurements of the antiproton cosmic-ray flux at the Earth will be a powerful way to indirectly probe for the existence of supersymmetric relics in the galactic halo. Unfortunately, it is still spoilt by considerable theoretical uncertainties. As shown in this work, searches for low-energy antideuterons appear in the mean time as a plausible alternative, worth being explored. Above a few GeV/n, a dozen spallation antideuterons should be collected by the future AMS experiment on board ISSA. For energies less than about 3 GeV/n, the antideuteron spallation component becomes negligible and may be supplanted by a potential supersymmetric signal. If a few low-energy antideuterons are discovered, this should be seriously taken as a clue for the existence of massive neutralinos in the Milky Way.

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