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

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

2006-05-26

arxiv.org/abs/hep-ph/0605280v1

Phys.Rev. D74 (2006) 023504

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, 7 figures

Scientific paper

10.1103/PhysRevD.74.023504

We investigate the relic abundance of dark matter in the minimal universal extra dimension model including resonance processes by second Kaluza-Klein (KK) particles in all coannihilation processes. After including second KK 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 < 1/R < 1400 GeV for Lambda R = 20.

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