Cosmological limits on axions

Details Cosmological limits on axions Cosmological limits on axions

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1115..303w&link_type=abstract

THE DARK SIDE OF THE UNIVERSE: 4th International Workshop on the Dark Side of the Universe. AIP Conference Proceedings, Volume

Mathematics

Logic

Dark Matter, Cosmology, Quantum Chromodynamics

Scientific paper

We derive cosmological limits on two-component hot dark matter consisting of neutrinos and axions. We restrict the large-scale structure data to the safely linear regime, excluding the Lyman-α forest. We derive Bayesian credible regions in the two-parameter space consisting of ma and Σmv. Marginalising over Σmv provides ma<1.02 eV (95% C.L.). In the absence of axions the same data and methods give Σmv<0.63 eV (95% C.L.).

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