Most constraining cosmological neutrino mass bounds

Eleonora Di Valentino, Stefano Gariazzo, and Olga Mena
Phys. Rev. D 104, 083504 – Published 1 October 2021

Abstract

We present here up-to-date neutrino mass limits exploiting the most recent cosmological data sets. By making use of the cosmic microwave background temperature fluctuation and polarization measurements, supernovae Ia luminosity distances, baryon acoustic oscillation observations and determinations of the growth rate parameter, we are able to set the most constraining bound to date, mν<0.09eV at 95% C.L. This very tight limit is obtained without the assumption of any prior on the value of the Hubble constant and highly compromises the viability of the inverted mass ordering as the underlying neutrino mass pattern in nature. The results obtained here further strengthen the case for very large multitracer spectroscopic surveys as unique laboratories for cosmological relics, such as neutrinos: that would be the case of the Dark Energy Spectroscopic Instrument survey and of the Euclid mission.

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  • Received 26 July 2021
  • Accepted 27 August 2021

DOI:https://doi.org/10.1103/PhysRevD.104.083504

© 2021 American Physical Society

Physics Subject Headings (PhySH)

Gravitation, Cosmology & AstrophysicsParticles & Fields

Authors & Affiliations

Eleonora Di Valentino1,*, Stefano Gariazzo2,†, and Olga Mena3,‡

  • 1Institute for Particle Physics Phenomenology, Department of Physics, Durham University, Durham DH1 3LE, United Kingdom
  • 2Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Torino, Via P. Giuria 1, Turin I-10125, Italy
  • 3Instituto de Física Corpuscular (IFIC), University of Valencia-CSIC, Parc Científic UV, c/ Catedrático José Beltrán 2, Paterna E-46980, Spain

  • *eleonora.di-valentino@durham.ac.uk
  • gariazzo@to.infn.it
  • omena@ific.uv.es

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Issue

Vol. 104, Iss. 8 — 15 October 2021

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