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Title: Axions as hot and cold dark matter

The presence of a hot dark matter component has been hinted at 3σ 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{sub a}∼
Authors:
 [1] ;  [2] ;  [3]
  1. Deutsches Elektronen Synchrotron DESY, Notkestrasse 85, 22607 Hamburg (Germany)
  2. Institute for Cosmic Ray Research, University of Tokyo, Kashiwa 277-8582 (Japan)
  3. Department of Physics, Tohoku University, Sendai 980-8578 (Japan)
Publication Date:
OSTI Identifier:
22370674
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 02; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANNIHILATION; AXIONS; GEV RANGE; HIGGS BOSONS; HIGGS MODEL; NONLUMINOUS MATTER; PARTICLE DECAY; QUANTUM CHROMODYNAMICS; STANDARD MODEL