articleJournal of Cosmology and Astroparticle PhysicsJan 1, 2025HYBRID OA

Neutrino cosmology after DESI: tightest mass upper limits, preference for the normal ordering, and tension with terrestrial observations

JJJun-Qian JiangWGWilliam GiarèSGStefano GariazzoMGMaria Giovanna DainottiEDEleonora Di Valentino

University of Trento · University of Chinese Academy of Sciences · +11 more institutions

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Abstract

Abstract The recent DESI Baryon Acoustic Oscillation measurements have led to tight upper limits on the neutrino mass sum, potentially in tension with oscillation constraints requiring ∑ m ν ≳ 0.06 eV. Under the physically motivated assumption of positive ∑ m ν , we study the extent to which these limits are tightened by adding other available cosmological probes, and robustly quantify the preference for the normal mass ordering over the inverted one, as well as the tension between cosmological and terrestrial data. Combining DESI data with Cosmic Microwave Background measurements and several late-time background probes, the tightest 2 σ limit we find without including a local H 0 prior is ∑ m ν < 0.05 eV.…

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Topics & keywords

Topics
Keywords
  • Physics
  • Cosmology
  • Neutrino
  • Dark energy
  • Astrophysics
  • Astronomy
  • Particle physics
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