6533b82ffe1ef96bd1294821
RESEARCH PRODUCT
Unveiling ν secrets with cosmological data: Neutrino masses and mass hierarchy
Massimiliano LattanziMassimiliano LattanziKatherine FreeseKatherine FreeseElena GiusarmaElena GiusarmaElena GiusarmaMartina GerbinoOlga MenaSunny VagnozziShirley HoShirley HoShirley Hosubject
PhysicsParticle physics010308 nuclear & particles physicsCosmic background radiationSpectral densityAstrophysics::Cosmology and Extragalactic AstrophysicsLambda01 natural sciencesUpper and lower boundsBaryonHigh Energy Physics - Phenomenologysymbols.namesakeQuantum mechanics0103 physical sciencessymbolsBaryon acoustic oscillationsNeutrino010306 general physicsAstrophysics - Cosmology and Nongalactic AstrophysicsHubble's lawdescription
Using some of the latest cosmological datasets publicly available, we derive the strongest bounds in the literature on the sum of the three active neutrino masses, $M_\nu$, within the assumption of a background flat $\Lambda$CDM cosmology. In the most conservative scheme, combining Planck cosmic microwave background (CMB) temperature anisotropies and baryon acoustic oscillations (BAO) data, as well as the up-to-date constraint on the optical depth to reionization ($\tau$), the tightest $95\%$ confidence level (C.L.) upper bound we find is $M_\nu0.06\,{\rm eV}$ from oscillations data would raise the quoted upper bounds by ${\cal O}(0.1\sigma)$ and would not affect our conclusions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-27 | Physical Review D |