Direct Detection Constraints on Superheavy Dark Matter

Details Direct Detection Constraints on Superheavy Dark Matter Direct Detection Constraints on Superheavy Dark Matter

2003-01-11

arxiv.org/abs/astro-ph/0301188v3

Phys.Rev.Lett. 90 (2003) 221301; Erratum-ibid. 91 (2003) 229903

Astronomy and Astrophysics

Astrophysics

10 pages, 2 figures, Figure 2 replaced

Scientific paper

10.1103/PhysRevLett.90.221301

The dark matter in the Universe might be composed of superheavy particles (mass >~ 10^10 GeV). These particles can be detected via nuclear recoils produced in elastic scatterings from nuclei. We estimate the observable rate of strongly interacting supermassive particles (simpzillas) in direct dark matter search experiments. The simpzilla energy loss in the Earth and in the experimental shields is taken into account. The most natural scenarios for simpzillas are ruled out based on recent EDELWEISS and CDMS results. The dark matter can be composed of superheavy particles only if these interact weakly with normal matter or if their mass is above 10^15 GeV.

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