Preprint/Internal Report

DESY-2013-01123

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Axions as Hot and Cold Dark Matter

Jeong, K.DESY* ; Kawasaki, M. ; Takahashi, F.

2013

This record in other databases:  

Report No.: DESY-13-181; ICRR-661-2013-10; IPMU13-0197; TU-948; arXiv:1310.1774

Abstract: The presence of a hot dark matter component has been hinted at 3 sigma by a combination of the results from different cosmological observations. We examine a possibility that pseudo Nambu-Goldstone bosons account for both hot and cold dark matter components. We show that the QCD axions can do the job for the axion decay constant f_a < O(10^10) GeV, if they are produced by the saxion decay and the domain wall annihilation. We also investigate the cases of thermal QCD axions, pseudo Nambu-Goldstone bosons coupled to the standard model sector through the Higgs portal, and axions produced by modulus decay.

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 514 - Theoretical Particle Physics (POF2-514) (POF2-514)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2013

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Database coverage:
Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article/Internal Report Jeong, K. S. (Corresponding Author)DESY* ; Kawasaki, M. ; Takahashi, F.
Axions as hot and cold dark matter
Journal of cosmology and astroparticle physics 2014(02), 046 - 046 (2014) [10.1088/1475-7516/2014/02/046]2014     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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