2002/05/15 by Steen Hannestad · 5 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Cosmology and Gravitation Theories #Neutrino Physics Research #astro-ph #hep-ph
paper · pdf · doi:10.1103/physrevd.66.125011
published as Phys.Rev. D66 (2002) 125011 · 6 pages, 2 figures, uses Revtex 4
arxiv created 2002/05/15 · openalex publication_date 2002/12/27 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We perform a careful analysis of constraints on the neutrino mass from current cosmological data. Combining data from the cosmic microwave background and the 2dF galaxy survey yields an upper limit on the sum of the three neutrino mass eigenstates of \ensuremath∑m_\ensuremathν<~3eV (95% C.L.), without including additional priors. Including data from SNIa observations, big bang nucleosynthesis, and HST Hubble key project data on H0 tightens the limit to \ensuremath∑m_\ensuremathν<~2.5eV (95% C.L.). We also perform a Fisher matrix analysis which illustrates the cosmological parameter degeneracies affecting the determination of \ensuremath∑m_\ensuremathν.