Phys. Rev. Lett. 89, 061301 (2002) [4 pages]New Upper Limit on the Total Neutrino Mass from the 2 Degree Field Galaxy Redshift Survey
See accompanying Physics Focus We constrain fν≡Ων/Ωm, the fractional contribution of neutrinos to the total mass density in the Universe, by comparing the power spectrum of fluctuations derived from the 2 Degree Field Galaxy Redshift Survey with power spectra for models with four components: baryons, cold dark matter, massive neutrinos, and a cosmological constant. Adding constraints from independent cosmological probes we find fν<0.13 (at 95% confidence) for a prior of 0.1<Ωm<0.5, and assuming the scalar spectral index n=1. This translates to an upper limit on the total neutrino mass mν,tot<1.8 eV for “concordance” values of Ωm and the Hubble constant. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.061301
DOI:
10.1103/PhysRevLett.89.061301
PACS:
95.35.+d, 14.60.Pq, 98.62.Py, 98.80.Es
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