Big Bang Nucleosynthesis as a probe of non-standard neutrino interactions and non-unitary three-neutrino mixing

22 pages, 5 figures, 1 table. Version accepted for publication in JCAP

Detalles Bibliográficos
Autores: Barenboim, Gabriela, Gariazzo, Stefano, Sánchez-Vargas, Alberto
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:dnet:digitalcsic_::24e1393d8d96201e4190dc177545c9eb
Acceso en línea:http://hdl.handle.net/10261/429266
http://arxiv.org/abs/2503.21998v2
Access Level:acceso abierto
Palabra clave:Big bang nucleosynthesis
Cosmological neutrinos
Neutrino properties
Particle physics - cosmology connection
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spelling Big Bang Nucleosynthesis as a probe of non-standard neutrino interactions and non-unitary three-neutrino mixingBarenboim, GabrielaGariazzo, StefanoSánchez-Vargas, AlbertoBig bang nucleosynthesisCosmological neutrinosNeutrino propertiesParticle physics - cosmology connection22 pages, 5 figures, 1 table. Version accepted for publication in JCAPIn this work we investigate the impact of two phenomenological Beyond the Standard Model (BSM) scenarios concerning the role of neutrinos in the early universe: non-standard neutrino interactions (NSI) and non-unitary three-neutrino mixing. We evaluate the impact of these frameworks on two key cosmological observables: the effective number of relativistic neutrino species (\Neff), related to neutrino decoupling, and the abundances of light elements produced at Big Bang Nucleosynthesis (BBN). For the first time, neutrino CC-NSI with quarks and non-unitary three-neutrino mixing are studied in the context of BBN, and the constraints on such interactions are found to be remarkably restrictive. In particular, the BBN limits are competitive with the ones derived from terrestrial experiments for the non-diagonal CC-NSI parameter $\varepsilon^{udV}_{e α}$, with $α\neq e$ and for the non-unitarity parameter $α_{22}$. In the case of non-unitarity, the combination between neutrino decoupling and BBN imposes stringent constraints that can either mildly favour the existence of New Physics (NP), or reinforce the SM, depending on the choice of the experimental nuclear rates involved in the BBN calculation. These results stress the already noted need for further nuclear rates measurements in order to obtain more robust BBN theoretical predictions.GB and ASV are supported by the Spanish grants CIPROM/2021/054 (Generalitat Valenciana), PID2020-113775GB-I00 (MICIU/AEI/10.13039/501100011033), and by the European ITN project HIDDeN (H2020-MSCA-ITN-2019/860881-HIDDeN). SG is supported by the Research grant TAsP (Theoretical Astroparticle Physics) funded by Istituto Nazionale di Fisica Nucleare (INFN). ASV is also supported by the grant FPU23/01408, MICIU.Peer reviewedIOP PublishingMinisterio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)Generalitat ValencianaIstituto Nazionale di Fisica NucleareBarenboim, Gabriela [0000-0002-3249-7467]Gariazzo, Stefano [0000-0002-4160-6987]Sánchez-Vargas, Alberto [0009-0002-8475-5146]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/10261/429266http://arxiv.org/abs/2503.21998v2reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113775GB-I00http://dx.doi.org/10.1088/1475-7516/2025/08/005Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::24e1393d8d96201e4190dc177545c9eb2026-05-22T06:33:51Z
dc.title.none.fl_str_mv Big Bang Nucleosynthesis as a probe of non-standard neutrino interactions and non-unitary three-neutrino mixing
title Big Bang Nucleosynthesis as a probe of non-standard neutrino interactions and non-unitary three-neutrino mixing
spellingShingle Big Bang Nucleosynthesis as a probe of non-standard neutrino interactions and non-unitary three-neutrino mixing
Barenboim, Gabriela
Big bang nucleosynthesis
Cosmological neutrinos
Neutrino properties
Particle physics - cosmology connection
title_short Big Bang Nucleosynthesis as a probe of non-standard neutrino interactions and non-unitary three-neutrino mixing
title_full Big Bang Nucleosynthesis as a probe of non-standard neutrino interactions and non-unitary three-neutrino mixing
title_fullStr Big Bang Nucleosynthesis as a probe of non-standard neutrino interactions and non-unitary three-neutrino mixing
title_full_unstemmed Big Bang Nucleosynthesis as a probe of non-standard neutrino interactions and non-unitary three-neutrino mixing
title_sort Big Bang Nucleosynthesis as a probe of non-standard neutrino interactions and non-unitary three-neutrino mixing
dc.creator.none.fl_str_mv Barenboim, Gabriela
Gariazzo, Stefano
Sánchez-Vargas, Alberto
author Barenboim, Gabriela
author_facet Barenboim, Gabriela
Gariazzo, Stefano
Sánchez-Vargas, Alberto
author_role author
author2 Gariazzo, Stefano
Sánchez-Vargas, Alberto
author2_role author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
Generalitat Valenciana
Istituto Nazionale di Fisica Nucleare
Barenboim, Gabriela [0000-0002-3249-7467]
Gariazzo, Stefano [0000-0002-4160-6987]
Sánchez-Vargas, Alberto [0009-0002-8475-5146]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Big bang nucleosynthesis
Cosmological neutrinos
Neutrino properties
Particle physics - cosmology connection
topic Big bang nucleosynthesis
Cosmological neutrinos
Neutrino properties
Particle physics - cosmology connection
description 22 pages, 5 figures, 1 table. Version accepted for publication in JCAP
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/10261/429266
http://arxiv.org/abs/2503.21998v2
url http://hdl.handle.net/10261/429266
http://arxiv.org/abs/2503.21998v2
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/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113775GB-I00
http://dx.doi.org/10.1088/1475-7516/2025/08/005
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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
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