New constraints on neutrino masses from cosmology
Copyright policy )New constraints on neutrino masses from cosmology
By combining data from cosmic microwave background (CMB) experiments (including the recent WMAP third year results), large scale structure (LSS) and Lyman-{alpha} forest observations, we derive upper limits on the sum of neutrino masses of {summation}m{sub v} 1eV or < 0.05eV the cosmological energy density in sterile neutrinos is always constrained to be {omega}{sub v} < 0.003 at 95% c.l.. However, for a sterile neutrino mass of {omega}{sub v} 0.25eV, {omega}{sub v} can be as large as 0.01.
- Roma Tre University Italy
- Sapienza University of Rome Italy
- University of North Texas United States
- Fermilab United States
- University of Ljubljana Slovenia
General Physics, Physics, Forests, Hypothesis, Astrophysics, 72 Physics Of Elementary Particles And Fields, Cosmology, Relict Radiation Astrophysics, cosmic microwave background; cosmology; neutrinos; theory, Abundance, Phenomenology-Hep, 71 Classical And Quantum Mechanics, Energy Density, Neutrinos
General Physics, Physics, Forests, Hypothesis, Astrophysics, 72 Physics Of Elementary Particles And Fields, Cosmology, Relict Radiation Astrophysics, cosmic microwave background; cosmology; neutrinos; theory, Abundance, Phenomenology-Hep, 71 Classical And Quantum Mechanics, Energy Density, Neutrinos
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