publication . Article . 2013

Is there evidence for additional neutrino species from cosmology?

Stephen M. Feeney; Hiranya V. Peiris; Licia Verde;
Open Access
  • Published: 18 Apr 2013 Journal: Journal of Cosmology and Astroparticle Physics, volume 2,013, pages 36-36 (eissn: 1475-7516, Copyright policy)
  • Publisher: IOP Publishing
Abstract
It has been suggested that recent cosmological and flavor-oscillation data favor the existence of additional neutrino species beyond the three predicted by the Standard Model of particle physics. We apply Bayesian model selection to determine whether there is indeed any evidence from current cosmological datasets for the standard cosmological model to be extended to include additional neutrino flavors. The datasets employed include cosmic microwave background temperature, polarization and lensing power spectra, and measurements of the baryon acoustic oscillation scale and the Hubble constant. We also consider other extensions to the standard neutrino model, such...
Persistent Identifiers
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic AstrophysicsHigh Energy Physics::PhenomenologyHigh Energy Physics::Experiment
free text keywords: Astronomy and Astrophysics, Cosmic microwave background, Standard Model, Baryon, Neutrino, Cosmology, Hubble's law, symbols.namesake, symbols, Astrophysics, Physics, Lambda-CDM model, Bayesian inference
Related Organizations
Funded by
EC| COSMICDAWN
Project
COSMICDAWN
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • Funding stream: FP7 | SP2 | ERC
,
EC| PHYS.LSS
Project
PHYS.LSS
Cosmological Physics with future large-scale structure surveys
  • Funder: European Commission (EC)
  • Project Code: 240117
  • Funding stream: FP7 | SP2 | ERC
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