Abstract
Using recent cosmological data, we derive upper limits on the sum of neutrino masses of Σm ν < 0.17 eV at 95% c.l. We then constrain the hypothesis of a fourth, sterile, massive neutrino. For the 3 massless + 1 massive neutrino case we bound the mass of the sterile neutrino to m s < 0.26 eV at 95% c.l. These results exclude at high significance the sterile neutrino hypothesis as an explanation of the LSND anomaly.
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Melchiorri, A., De Bernardis, F., Pagano, L., Serra, P. (2008). Cosmological Constraints on Neutrino Masses. In: Carlino, G., D’Ambrosio, G., Merola, L., Paolucci, P., Ricciardi, G. (eds) IFAE 2007. Springer, Milano. https://doi.org/10.1007/978-88-470-0747-5_42
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DOI: https://doi.org/10.1007/978-88-470-0747-5_42
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