| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1843124 | Nuclear Physics B | 2006 | 12 Pages |
Abstract
We re-evaluate the thermal relic density of the Kaluza–Klein (KK) dark matter in universal extra dimension models. In particular, we consider the effect of the resonance caused by second KK particles on the density. We find that the annihilation cross sections relevant to the density are significantly enhanced due to the resonance when the Higgs boson mass is large enough (mh≳200 GeVmh≳200 GeV). As a result, the mass of the dark matter particle consistent with the WMAP observation is increased compared to the result which does not include any resonance.
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
Mitsuru Kakizaki, Shigeki Matsumoto, Yoshio Sato, Masato Senami,