Higgs Dark Matter in UEDs: A Good WIMP with Bad Detection Prospects
arXiv:1204.5186 · doi:10.1016/j.physletb.2012.07.037
Abstract
We study the first Kaluza-Klein excitation of the Higgs boson in universal extra dimensions as a dark matter candidate. The first-level Higgs boson could be the lightest Kaluza-Klein particle, which is stable due to the conservation of Kaluza-Klein parity, in non-minimal models where boundary localized terms modify the mass spectrum. We calculate the relic abundance and find that it agrees with the observed dark matter density if the mass of the first-level Higgs boson is slightly above 2 TeV, not considering coannihilations and assuming no relative mass splitting among the first-level Kaluza-Klein modes. In the case of coannihilations and a non-zero mass splitting, the mass of the first-level Higgs boson can range from 1 TeV to 4 TeV. We study also the prospects for detection of this dark matter candidate in direct as well as indirect detection experiments. Although the first-level Higgs boson is a typical weakly interacting massive particle, an observation in any of the conventional experiments is very challenging.
arXiv comment16 pages, 7 figures. Final version published in Phys. Lett. B
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- A White Paper on keV Sterile Neutrino Dark Matter
- A Review on Non-Minimal Universal Extra Dimensions
- Status Report on Universal Extra Dimensions After LHC8
- Dark Matter in Minimal Universal Extra Dimensions with a Stable Vacuum and the "Right" Higgs
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