Constraints on neutrino physics from DESI DR2 BAO and DR1 full shape

(DESI Collaboration): W. Elbers et al.

Detalles Bibliográficos
Autores: Elbers, W., Castander, Francisco J., Gaztañaga, Enrique, Gil-Marín, Héctor, Prada, Francisco, DESI Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/419295
Acceso en línea:http://hdl.handle.net/10261/419295
Access Level:acceso abierto
Palabra clave:Baryon acoustic oscillations
Cosmic microwave background
Dark energy
Large scale structure of the Universe
Neutrino mass
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oai_identifier_str oai:digital.csic.es:10261/419295
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Constraints on neutrino physics from DESI DR2 BAO and DR1 full shape
title Constraints on neutrino physics from DESI DR2 BAO and DR1 full shape
spellingShingle Constraints on neutrino physics from DESI DR2 BAO and DR1 full shape
Elbers, W.
Baryon acoustic oscillations
Cosmic microwave background
Dark energy
Large scale structure of the Universe
Neutrino mass
title_short Constraints on neutrino physics from DESI DR2 BAO and DR1 full shape
title_full Constraints on neutrino physics from DESI DR2 BAO and DR1 full shape
title_fullStr Constraints on neutrino physics from DESI DR2 BAO and DR1 full shape
title_full_unstemmed Constraints on neutrino physics from DESI DR2 BAO and DR1 full shape
title_sort Constraints on neutrino physics from DESI DR2 BAO and DR1 full shape
dc.creator.none.fl_str_mv Elbers, W.
Castander, Francisco J.
Gaztañaga, Enrique
Gil-Marín, Héctor
Prada, Francisco
DESI Collaboration
author Elbers, W.
author_facet Elbers, W.
Castander, Francisco J.
Gaztañaga, Enrique
Gil-Marín, Héctor
Prada, Francisco
DESI Collaboration
author_role author
author2 Castander, Francisco J.
Gaztañaga, Enrique
Gil-Marín, Héctor
Prada, Francisco
DESI Collaboration
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv European Research Council
Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
Castander, Francisco J. [0000-0001-7316-4573]
Gaztañaga, Enrique [0000-0001-9632-0815]
Gil-Marín, Héctor [0000-0003-0265-6217]
Prada, Francisco [0000-0001-7145-8674]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Baryon acoustic oscillations
Cosmic microwave background
Dark energy
Large scale structure of the Universe
Neutrino mass
topic Baryon acoustic oscillations
Cosmic microwave background
Dark energy
Large scale structure of the Universe
Neutrino mass
description (DESI Collaboration): W. Elbers et al.
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/419295
url http://hdl.handle.net/10261/419295
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/H2020/786910
The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1103/w9pk-xsk7
https://doi.org/10.1103/w9pk-xsk7
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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spelling Constraints on neutrino physics from DESI DR2 BAO and DR1 full shapeElbers, W.Castander, Francisco J.Gaztañaga, EnriqueGil-Marín, HéctorPrada, FranciscoDESI CollaborationBaryon acoustic oscillationsCosmic microwave backgroundDark energyLarge scale structure of the UniverseNeutrino mass(DESI Collaboration): W. Elbers et al.The Dark Energy Spectroscopic Instrument (DESI) Collaboration has obtained robust measurements of baryon acoustic oscillations in the redshift range 0.1 <z< 4.2, based on the Lyman-α forest and galaxies from data release 2. We combine these measurements with cosmic microwave background (CMB) data from Planck and the Atacama Cosmology Telescope to place our tightest constraints yet on the sum of neutrino masses. Assuming the cosmological P ΛCDM model and three degenerate neutrino states, we find mν < 0.0642 eV (95%) with a marginalized error of σð PmνÞ ¼ 0.020 eV. We also constrain the effective number of neutrino species, finding Neff ¼ 3.23þ0.35 −0.34 (95%), in line with the Standard Model prediction. When accounting for neutrino oscillation constraints, we find a preference for the normal mass ordering and an upper limit on the lightest neutrino mass of ml < 0.023 eV (95%). However, we determine using frequentist and Bayesian methods that our constraints are in tension with the lower limits derived from neutrino oscillations. Correcting for the physical boundary at zero mass, we report a 95% FeldmanCousins upper limit of Pmν < 0.053 eV, breaching the lower limit from neutrino oscillations. Considering a more general Bayesian analysis with an effective cosmological neutrino mass parameter, Pmν;eff, that allows for negative energy densities and removes unsatisfactory prior weight effects, we derive constraints that are in 3σ tension with the same oscillation limit, while the error rises to σð Pmν;effÞ ¼ 0.053 eV. In the absence of unknown systematics, this finding could be interpreted as a hint of new physics not necessarily related to neutrinos. The preference of DESI and CMB data for an evolving dark energy model offers one possible solution. In the w0waCDM model, we find Pmν < 0.163 eV (95%), relaxing the neutrino tension. These constraints all rely on the effects of neutrinos on the cosmic expansion history. Using full-shape power spectrum measurements of data release 1 galaxies, we place complementary constraints that rely on neutrino free streaming. Our strongest such limit in ΛCDM, using selected CMB priors, is Pmν < 0.193 eV (95%).The authors are honored to be permitted to conduct scientific research on I’oligam Du’ag (Kitt Peak), a mountain with particular significance to the Tohono O’odham Nation. This work used the DiRAC@Durham facility managed by the Institute for Computational Cosmology on behalf of the STFC DiRAC HPC Facility [221]. The equipment was funded by BEIS capital funding via STFC capital Grants No. ST/K00042X/1, No. ST/P002293/1, No. ST/R002371/1, and No. ST/S002502/1, Durham University and STFC operations Grant No. ST/R000832/1. DiRAC is part of the National e-Infrastructure. W. E., C. S. F, and A. M. acknowledge STFC Consolidated Grant No. ST/X001075/1 and support from the European Research Council (ERC) Advanced Investigator Grant DMIDAS (GA 786910). A. A., H. E. N., D. G., and G. N. acknowledge support by CONAHCyT CBF2023-2024-162. A. A., D. G., and H. E. N. acknowledge support by PAPIIT IA101825. A. A. acknowledges support by PAPIIT IG102123. G. N. and D. G. also acknowledge support by DAIP-UG and DCI-UG DataLab. C. G. Q. acknowledges support provided by NASA through the NASA Hubble Fellowship Grant No. HST-HF2-51554.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under Contract No. NAS5-26555. K. N. acknowledges support from the Royal Society Grant No. URF\R\231006. M. I. acknowledges that this material is based upon work supported in part by the Department of Energy, Office of Science, under Award No. DE-SC0022184 and also in part by the U.S. National Science Foundation under Grant No. AST2327245. This material is based upon work supported by the U.S. Department of Energy (DOE), Office of Science, Office of High-Energy Physics, under Contract No. DE-AC02-05CH11231, and by the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility under the same contract. Additional support for DESI was provided by the U.S. National Science Foundation (NSF), Division of Astronomical Sciences under Contract No. AST-0950945 to the NSF’s National Optical-Infrared Astronomy Research Laboratory; the Science and Technology Facilities Council of the United Kingdom; the Gordon and Betty Moore Foundation; the Heising-Simons Foundation; the French Alternative Energies and Atomic Energy Commission (CEA); the National Council of Humanities, Science and Technology of Mexico (CONAHCYT); the Ministry of Science, Innovation and Universities of Spain (MICIU/AEI/10.13039/501100011033), and by the DESI Member Institutions [222].Peer reviewedAmerican Physical SocietyEuropean Research CouncilMinisterio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)Castander, Francisco J. [0000-0001-7316-4573]Gaztañaga, Enrique [0000-0001-9632-0815]Gil-Marín, Héctor [0000-0003-0265-6217]Prada, Francisco [0000-0001-7145-8674]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/419295reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/H2020/786910The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1103/w9pk-xsk7https://doi.org/10.1103/w9pk-xsk7Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4192952026-05-22T06:33:51Z
score 15,811543

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