2012/04/30 by Henrik Melbeus, Henrik Melbéus, Alexander Merle +1
Physics and Astronomy · #Astrophysics #Boson #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark matter #Higgs boson #Kaluza–Klein theory #Light dark matter #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Scalar field dark matter #Theoretical physics #Vector boson #WIMP #Warm dark matter #Weakly interacting massive particles #astro-ph.CO #hep-ph
paper · pdf · doi:10.1016/j.physletb.2012.07.037
published as Phys. Lett. B 715 (2012) 164-169 · 16 pages, 7 figures. Final version published in Phys. Lett. B
openalex publication_date 2012/07/20 · arxiv created 2012/08/14 · arxiv updated 2012/08/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.