publication . Article . Other literature type . Preprint . 2016

Cosmology and the neutrino mass ordering

Thomas Schwetz; Steen Hannestad;
Open Access English
  • Published: 18 Nov 2016 Journal: Journal of Cosmology and Astroparticle Physics, volume 2,016, issue 11, pages 35-35 (eissn: 1475-7516, Copyright policy)
Abstract
We propose a simple method to quantify a possible exclusion of the inverted neutrino mass ordering from cosmological bounds on the sum of the neutrino masses. The method is based on Bayesian inference and allows for a calculation of the posterior odds of normal versus inverted ordering. We apply the method for a specific set of current data from Planck CMB data and large-scale structure surveys, providing an upper bound on the sum of neutrino masses of 0.14 eV at 95% CL. With this analysis we obtain posterior odds for normal versus inverted ordering of about 2:1. If cosmological data is combined with data from oscillation experiments the odds reduce to about 3:2...
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic Astrophysics
free text keywords: Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Phenomenology, Astronomy and Astrophysics, Cosmology, Upper and lower bounds, Particle physics, Planck, symbols.namesake, symbols, Neutrino oscillation, Bayesian inference, Cosmic microwave background, Neutrino, Physics, Cosmic background radiation
Funded by
EC| InvisiblesPlus
Project
InvisiblesPlus
InvisiblesPlus
  • Funder: European Commission (EC)
  • Project Code: 690575
  • Funding stream: H2020 | MSCA-RISE
,
EC| ELUSIVES
Project
ELUSIVES
The Elusives Enterprise: Asymmetries of the Invisible Universe
  • Funder: European Commission (EC)
  • Project Code: 674896
  • Funding stream: H2020 | MSCA-ITN-ETN
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