Relic abundance of dark matter in the minimal universal extra dimension model

2006/05/26 by M. Kakizaki, Mitsuru Kakizaki, Shigeki Matsumoto +1 · 2 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.74.023504

published as Phys.Rev. D74 (2006) 023504 · 24 pages, 7 figures

arxiv created 2006/05/26 · openalex publication_date 2006/07/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We investigate the relic abundance of dark matter in the minimal universal extra dimension model including resonance processes by second Kaluza-Klein particles in all coannihilation processes. After including second Kaluza-Klein resonance processes, the relic abundance of dark matter is reduced by about 30%. Thus, the compactification scale 1/R of the extra dimension consistent with the WMAP observation is increased by a few hundred GeV. As a result, the cosmologically allowed compactification scale is 600 GeV\ensuremath\lesssim1/R\ensuremath\lesssim1400 GeV for \ensuremathΛR=20.

Citations

• Cosmic abundances of stable particles: Improved analysis
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results

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