Cosmological limit on the neutrino mass

Details Cosmological limit on the neutrino mass Cosmological limit on the neutrino mass

2002-05-15

arxiv.org/abs/astro-ph/0205223v1

Phys.Rev. D66 (2002) 125011

Astronomy and Astrophysics

Astrophysics

6 pages, 2 figures, uses Revtex 4

Scientific paper

10.1103/PhysRevD.66.125011

We have performed 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 \sum m_nu < 3 eV (95% conf.), without including additional priors. Including data from SNIa observations, Big Bang nucleosynthesis, and HST Hubble key project data on H_0 tightens the limit to \sum m_nu < 2.5 eV (95% conf.). We also perform a Fisher matrix analysis which illustrates the cosmological parameter degeneracies affecting the determination of \sum m_nu.

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