Antideuterons from Decaying Gravitino Dark Matter
High Energy Physics - Phenomenology
2015-07-09 v3 High Energy Astrophysical Phenomena
Abstract
We study the possibility of improving the constraints on the lifetime of gravitino dark matter in scenarios with bilinear R-parity violation by estimating the amount of cosmic-ray antideuterons that can be produced in gravitino decays. Taking into account all different sources of theoretical uncertainties, we find that the margin of improvement beyond the limits already set by cosmic-ray antiproton data are quite narrow and unachievable for the next generation of experiments. However, we also identify more promising energy ranges for future experiments.
Keywords
Cite
@article{arxiv.1503.01101,
title = {Antideuterons from Decaying Gravitino Dark Matter},
author = {Timur Delahaye and Michael Grefe},
journal= {arXiv preprint arXiv:1503.01101},
year = {2015}
}
Comments
28 pages, 14 figures, pdfLaTeX; addition of figure 7, minor extension of discussion, results unchanged, agrees with published version