Model marginalized constraints on neutrino properties from cosmology

Abstract

We present robust, model-marginalized limits on both the total neutrino mass ($\sum m_{\nu }$) and abundance ($N_{\mathrm{eff}}$) to minimize the role of parameterizations, priors and models when extracting neutrino properties from cosmology. The cosmological observations we consider are CMB temperature fluctuation and polarization measurements, Supernovae Ia luminosity distances, BAO observations and determinations of the growth rate parameter from the Data Release 16 of the Sloan Digital Sky Survey IV. The degenerate neutrino mass spectrum (which implies $\sum m_{\nu }>0$) is weakly (moderately) preferred over the normal and inverted hierarchy possibilities, which imply the priors $\sum m_{\nu }>0.06$ and $\sum m_{\nu }>0.1$ eV respectively. Concerning the underlying cosmological model, the $\Lambda$CDM minimal scenario is almost always strongly preferred over the possible extensions explored here. The most constraining $95\%$ CL bound on the total neutrino mass in the $\Lambda$CDM+$\sum m_{\nu }$ picture is $\sum m_{\nu }<0.087$ eV. The parameter $N_{\mathrm{eff}}$ is restricted to $3.08\pm 0.17$ ($68\%$ CL) in the $\Lambda$CDM+$N_{\mathrm{eff}}$ model. These limits barely change when considering the $\Lambda$CDM+$\sum m_{\nu }$+$N_{\mathrm{eff}}$ scenario. Given the robustness and the strong constraining power of the cosmological measurements employed here, the model-marginalized posteriors obtained considering a large spectra of non-minimal cosmologies are very close to the previous bounds, obtained within the $\Lambda$CDM framework in the degenerate neutrino mass spectrum. Future cosmological measurements may improve the current Bayesian evidence favouring the degenerate neutrino mass spectra, challenging therefore the consistency between cosmological neutrino mass bounds and oscillation neutrino measurements, and potentially suggesting a more complicated cosmological model and/or neutrino sector.

arXiv comment11 pages, 3 figures, 3 tables. Minor changes to match the version accepted for publication in PRD

References in corpus (64)

• Efficient Computation of CMB anisotropies in closed FRW models
• Cosmological parameters from CMB and other data: a Monte-Carlo approach
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• The Baryon Oscillation Spectroscopic Survey of SDSS-III
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
• Bayes in the sky: Bayesian inference and model selection in cosmology
• The fate of hints: updated global analysis of three-flavor neutrino oscillations
• Planck 2018 results. V. CMB power spectra and likelihoods
• Massive neutrinos and cosmology
• The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Overview and Early Data
• Planck 2018 results. VIII. Gravitational lensing
• 2020 Global reassessment of the neutrino oscillation picture
• Planck evidence for a closed Universe and a possible crisis for cosmology
• Unveiling $\nu$ secrets with cosmological data: neutrino masses and mass hierarchy
• Curvature tension: evidence for a closed universe
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: measurement of the BAO and growth rate of structure of the luminous red galaxy sample from the anisotropic correlation function between redshifts 0.6 and 1
• Global constraints on absolute neutrino masses and their ordering
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: measurement of the BAO and growth rate of structure of the luminous red galaxy sample from the anisotropic power spectrum between redshifts 0.6 and 1.0
• Towards a precision calculation of $N_{\mathrm{eff}}$ in the Standard Model II: Neutrino decoupling in the presence of flavour oscillations and finite-temperature QED
• How Massless Neutrinos Affect the Cosmic Microwave Background Damping Tail
• Neutrino decoupling including flavour oscillations and primordial nucleosynthesis
• A precision calculation of relic neutrino decoupling
• Constraints on the sum of the neutrino masses in dynamical dark energy models with $w(z)\ge -1$ are tighter than those obtained in $\Lambda$CDM
• Neutrino mass from Cosmology
• Growing Matter
• Updated results on neutrino mass and mass hierarchy from cosmology with Planck 2018 likelihoods
• Neutrino masses and the dark energy equation of state - relaxing the cosmological neutrino mass bound
• Neutrino mass in cosmology: status and prospects
• The galaxy power spectrum take on spatial curvature and cosmic concordance
• The neutrino mass bound from WMAP-3, the baryon acoustic peak, the SNLS supernovae and the Lyman-alpha forest
• On the most constraining cosmological neutrino mass bounds
• Updated Bounds on Sum of Neutrino Masses in Various Cosmological Scenarios
• Neutrino masses and their ordering: Global Data, Priors and Models
• Relic Neutrinos, thermal axions and cosmology in early 2014
• Cosmological Axion and neutrino mass constraints from Planck 2015 temperature and polarization data
• Neutrino physics from precision cosmology
• Addendum to: Global constraints on absolute neutrino masses and their ordering
• Axion hot dark matter bounds after Planck
• Impact of neutrino properties on the estimation of inflationary parameters from current and future observations
• All-inclusive interacting dark sector cosmologies
• Relaxing Cosmological Neutrino Mass Bounds with Unstable Neutrinos
• An improved cosmological bound on the thermal axion mass
• Long Range Interactions in Cosmology: Implications for Neutrinos
• The impact of relativistic effects on cosmological parameter estimation
• Invisible neutrino decay in precision cosmology
• Constraints on neutrino masses from Planck and Galaxy Clustering data
• New cosmological bounds on hot relics: Axions $\&$ Neutrinos
• Emergent Dark Energy, neutrinos and cosmological tensions
• The full Boltzmann hierarchy for dark matter-massive neutrino interactions
• Distinguishing between Neutrinos and time-varying Dark Energy through Cosmic Time
• Cosmological neutrinos
• Dynamical Dark sectors and Neutrino masses and abundances
• How to relax the cosmological neutrino mass bound
• Future cosmological sensitivity for hot dark matter axions
• Reconstruction of the neutrino mass as a function of redshift
• Cornering the Planck $A_{lens}$ tension with future CMB data
• Constraints on the sum of neutrino masses using cosmological data including the latest extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample
• Neutrino and Dark Radiation properties in light of latest CMB observations
• What can CMB observations tell us about the neutrino distribution function?
• Constraints on Neutrino Mass and Light Degrees of Freedom in Extended Cosmological Parameter Spaces
• Cosmology-marginalized approaches in Bayesian model comparison: the neutrino mass as a case study
• Constraining power of open likelihoods, made prior-independent
• Is it Mixed dark matter or neutrino masses?

Cited by in corpus (18)

• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Neutrino cosmology after DESI: tightest mass upper limits, preference for the normal ordering, and tension with terrestrial observations
• Massive neutrino self-interactions and inflation
• Euclid preparation. Sensitivity to neutrino parameters
• Impacts of dark energy on weighing neutrinos after DESI BAO
• Measuring the reionization optical depth without large-scale CMB polarization
• ${\Lambda }_{\mathrm{s}}$CDM cosmology: Alleviating major cosmological tensions by predicting standard neutrino properties
• A Survey of Neutrino Flavor Models and the Neutrinoless Double Beta Decay Funnel
• Neutrino mass models at $\mu$TRISTAN
• A novel model-marginalized cosmological bound on the QCD axion mass
• Neutrino masses from large-scale structures: future sensitivity and theory dependence
• Hints of Neutrino Dark Matter scattering in the CMB? Constraints from the Marginalized and Profile Distributions
• Impact of the damping tail on neutrino mass constraints
• Lensing impact on cosmic relics and tensions
• How robust are the parameter constraints extending the $\Lambda$CDM model?
• Joint Constraints on Neutrinos and Dynamical Dark Energy in Minimally Modified Gravity
• Possible Impact of non-Gaussianities on cosmological constraints in neutrino physics
• Scale and redshift dependent limits on cosmic neutrino properties