Probing oscillations into sterile neutrinos with cosmology, astrophysics and experiments

By Marco Cirelli, Guido Marandella, Alessandro Strumia, F. Vissani. 2004

144 citations recorded by the source corpus.

Abstract We perform a thorough analysis of oscillation signals generated by one extra sterile neutrino, extending previous analyses done in simple limiting cases and including the effects of established oscillations among active neutrinos. We consider the following probes: solar, atmospheric, reactor and beam neutrinos, big-bang nucleosynthesis (helium-4, deuterium), cosmic microwave background, large scale structure, supernovae, neutrinos from other astrophysical sources. We find no evidence for a sterile neutrino in present data, identify the still allowed regions, and study which future experiments can best probe them: sub-MeV solar experiments, more precise studies of CMB or BBN, future supernova explosions, etc. We discuss how the LSND hint is strongly disfavoured by the constraints of (standard) cosmology.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/80257a9a694096ef4c82c1f26547f688323a6da0

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In Nuclear and High Energy Physics

1. S. Pastor
2. Julien Lesgourgues
3. M. Viel
4. T. Schwetz
5. M. Maltoni
6. F. Vissani
7. S. Marcocci
8. S. Dell’Oro

Citations in the corpus

• Neutrino Mass from Cosmology (2012, methodology): “A full four-flavour calculation has not been performed, but a few analyses did solve simplified kinetic equations taking into account active neutrino mixing, such as [39, 40, 41].”
• The Search for Heavy Majorana Neutrinos (2009, unknown): “[64].”
• Neutrinoless Double Beta Decay: 2015 Review (2016, background): “However, it has been known for long [55, 56] that the presence of eV neutrinos would also imply large effects in cosmology, both in the number of relativistic species and in the value of the neutrino mass.”
• Sterile neutrino oscillations after first MiniBooNE results (2007, background): “Such models do have an impact on cosmology [38].”