TY - JOUR
T1 - Relic abundance of dark matter in the minimal universal extra dimension model
AU - Kakizaki, Mitsuru
AU - Matsumoto, Shigeki
AU - Senami, Masato
PY - 2006
Y1 - 2006
N2 - 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 600GeV 1/R 1400GeV for ΛR=20.
AB - 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 600GeV 1/R 1400GeV for ΛR=20.
UR - http://www.scopus.com/inward/record.url?scp=33745745903&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.74.023504
DO - 10.1103/PhysRevD.74.023504
M3 - 学術論文
AN - SCOPUS:33745745903
SN - 1550-7998
VL - 74
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 2
M1 - 023504
ER -