PIRSA:13110083

Video URL

https://pirsa.org/13110083

Is there evidence for additional neutrino species from cosmology?

Feeney, S. (2013). Is there evidence for additional neutrino species from cosmology?. Perimeter Institute for Theoretical Physics. https://pirsa.org/13110083

Feeney, Stephen. Is there evidence for additional neutrino species from cosmology?. Perimeter Institute for Theoretical Physics, Nov. 12, 2013, https://pirsa.org/13110083 

          @misc{ scivideos_PIRSA:13110083,
            doi = {10.48660/13110083},
            url = {https://pirsa.org/13110083},
            author = {Feeney, Stephen},
            keywords = {Cosmology},
            language = {en},
            title = {Is there evidence for additional neutrino species from cosmology?},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2013},
            month = {nov},
            note = {PIRSA:13110083 see, \url{https://scivideos.org/pirsa/13110083}}
          }

Stephen Feeney

Talk numberPIRSA:13110083
DOI10.48660/13110083
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

It has been suggested that recent cosmological and flavor-oscillation data favor the existence of additional neutrino species beyond the three standard flavors. We apply Bayesian model selection to determine whether there is 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 data, and measurements of the baryon acoustic oscillation scale and the Hubble constant. We also consider other additional neutrino physics, such as massive neutrinos, and possible degeneracies with other cosmological parameters.