TY  - JOUR
AU  - Jeong, Kwang Sik
AU  - Kawasaki, Masahiro
AU  - Takahashi, Fuminobu
TI  - Axions as hot and cold dark matter
JO  - Journal of cosmology and astroparticle physics
VL  - 2014
IS  - 02
SN  - 1475-7516
CY  - London
PB  - IOP
M1  - DESY-2014-02299
M1  - DESY-13-181
M1  - TU-948
M1  - ICRR-661-2013-10
M1  - IPMU13-0197
M1  - arXiv:1310.1774
SP  - 046 - 046
PY  - 2014
AB  - The presence of a hot dark matter component has been hintedat 3σ by a combination of the results from differentcosmological observations. We examine a possibility that pseudoNambu-Goldstone bosons account for both hot and cold dark mattercomponents. We show that the QCD axions can do the job for theaxion decay constant fa(1010) GeV, if theyare produced by the saxion decay and the domain wall annihilation.We also investigate the cases of thermal QCD axions, pseudoNambu-Goldstone bosons coupled to the standard model sector throughthe Higgs portal, and axions produced by modulus decay.
LB  - PUB:(DE-HGF)16 ; PUB:(DE-HGF)15
DO  - DOI:10.1088/1475-7516/2014/02/046
UR  - https://bib-pubdb1.desy.de/record/168033
ER  -