Reactor sterile neutrinos, dark energy and the age of the universe

Details Reactor sterile neutrinos, dark energy and the age of the universe Reactor sterile neutrinos, dark energy and the age of the universe

2011-04-04

arxiv.org/abs/1104.0704v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Accepted for publication in Astronomy & Astrophysics. References added and typos corrected. Added numerical values for w range

Scientific paper

There are indications that the neutrino oscillation data from reactor experiments and the LSND and MiniBooNE experiments show a preference for two sterile neutrino species, both with masses in the eV region. We show that this result has a significant impact on some important cosmological parameters. Specifically, we use a combination of CMB, LSS and SN1A data and show that the existence of two light, sterile neutrinos would rule out the cosmological constant as dark energy at 95% confidence level, and lower the expansion age of the universe to 12.58 \pm 0.26 Gyr.

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