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On the most constraining cosmological neutrino mass bounds

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arxiv 2106.15267 v3 pith:S5YMVFRV submitted 2021-06-29 astro-ph.CO hep-ph

On the most constraining cosmological neutrino mass bounds

classification astro-ph.CO hep-ph
keywords masscosmologicalneutrinocaseconstraininghereobtainedspectroscopic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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, $\sum m_\nu<0.09$ eV at $95\%$~CL. 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 (DESI) survey and of the Euclid mission.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations

    astro-ph.CO 2024-04 accept novelty 7.0

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  2. From Evidence to Evident: Decisive Cosmological Evidence for the Normal Neutrino Mass Hierarchy

    astro-ph.CO 2026-06 unverdicted novelty 6.0

    DESI DR2 data constrain the neutrino mass sum below the inverted hierarchy minimum, yielding Bayes factor K>460 for normal hierarchy in standard cosmology.

  3. Are neutrinos Majorana? Fixed-target and high-energy astrophysical searches decide

    hep-ph 2026-06 unverdicted novelty 6.0

    Correlated HNL discovery at SHiP and flavor ratio shifts in astrophysical neutrinos at telescopes would establish neutrinos as Majorana fermions.

  4. Are Cosmological Data Excluding Sterile Neutrinos or Only the Fully Thermalized Limit?

    astro-ph.CO 2026-06 unverdicted novelty 5.0

    Cosmological observations constrain the effective abundance of light sterile neutrinos tightly while allowing non-fully-thermalized realizations to remain viable across LambdaCDM and CPL models.

  5. Constraints on Neutrino Physics from DESI DR2 BAO and DR1 Full Shape

    astro-ph.CO 2025-03 conditional novelty 5.0

    DESI DR2 BAO and full-shape data plus CMB yield ∑m_ν < 0.0642 eV (95% CL) under ΛCDM, in 3σ tension with oscillation lower limits, relaxed to <0.163 eV in w0waCDM.

  6. Comments on "Unified neutrino mixing and approximate $\mu-\tau$ reflection symmetry" (Mod. Phys. Lett. A, 40 (2025) 26, 2550097 [arXiv:2502.18029 [hep-ph]])

    hep-ph 2026-03 accept novelty 2.0

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