English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

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

MPS-Authors
/persons/resource/persons185151

Hansen,  Rasmus
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

Locator
There are no locators available
Fulltext (public)

1606.07673.pdf
(Preprint), 2MB

Supplementary Material (public)
There is no public supplementary material available
Citation

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.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002B-9D13-4
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.