Dark Atoms of Dark Matter and their Stable Charged Constituents

Details Dark Atoms of Dark Matter and their Stable Charged Constituents Dark Atoms of Dark Matter and their Stable Charged Constituents

2011-11-11

arxiv.org/abs/1111.2887v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Contribution to Proceedings of ICATPP2011

Scientific paper

Direct searches for dark matter lead to serious problems for simple models with stable neutral Weakly Interacting Massive Particles (WIMPs) as candidates for dark matter. A possibility is discussed that new stable quarks and charged leptons exist and are hidden from detection, being bound in neutral dark atoms of composite dark matter. Stable -2 charged particles $O^{--}$ are bound with primordial helium in O-helium (OHe) atoms, being specific nuclear interacting form of composite dark matter. The positive results of DAMA experiments can be explained as annual modulation of radiative capture of O-helium by nuclei. In the framework of this approach test of DAMA results in detectors with other chemical content becomes a nontrivial task, while the experimental search of stable charged particles at LHC or in cosmic rays acquires a meaning of direct test for composite dark matter scenario.

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