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  Pseudoscalar - sterile neutrino interactions: reconciling the cosmos with neutrino oscillations

Archidiacono, M., Gariazzo, S., Giunti, C., Hannestad, S., Hansen, R., Laveder, M., et al. (2016). Pseudoscalar - sterile neutrino interactions: reconciling the cosmos with neutrino oscillations. Journal of Cosmology and Astroparticle Physics, 2016: 067. doi:10.1088/1475-7516/2016/08/067.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-002B-9D13-4 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-002B-9D17-B
Genre: Journal Article

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 Creators:
Archidiacono, Maria, Author
Gariazzo, Stefano, Author
Giunti, Carlo, Author
Hannestad, Steen, Author
Hansen, Rasmus1, Author           
Laveder, Marco, Author
Tram, Thomas, Author
Affiliations:
1Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549              

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Free keywords: Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO,High Energy Physics - Phenomenology, hep-ph
 Abstract: The Short BaseLine (SBL) neutrino oscillation anomalies hint at the presence of a sterile neutrino with a mass of around 1 eV. However, such a neutrino is incompatible with cosmological data, in particular observations of the Cosmic Microwave Background (CMB) anisotropies. However, this conclusion can change by invoking new physics. One possibility is to introduce a secret interaction in the sterile neutrino sector mediated by a light pseudoscalar. In this pseudoscalar model, CMB data prefer a sterile neutrino mass that is fully compatible with the mass ranges suggested by SBL anomalies. In addition, this model predicts a value of the Hubble parameter which is completely consistent with local measurements.

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 Dates: 2016-08-31
 Publication Status: Published online
 Pages: 17 pages, 7 figures. Matches published version
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: arXiv: 1606.07673
DOI: 10.1088/1475-7516/2016/08/067
URI: http://arxiv.org/abs/1606.07673
 Degree: -

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Title: Journal of Cosmology and Astroparticle Physics
Source Genre: Journal
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Publ. Info: Bristol, England : Institute of Physics Pub.
Pages: - Volume / Issue: 2016 Sequence Number: 067 Start / End Page: - Identifier: ISSN: 1475-7516
CoNE: https://pure.mpg.de/cone/journals/resource/111055183238000_1