New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation value

Autores
Mosquera, Mercedes Elisa; Civitarese, Enrique Osvaldo
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Aims: We study the time variation of the fine structure constant, α, and the Higgs vacuum expectation value v, during the Big Bang nucleosynthesis (BBN). Methods: We computed primordial abundances of light nuclei produced during the BBN stage by including resonances in the leading reaction rates which reduce the primordial abundance of beryllium. We performed this calculation considering that α and v may vary during the BBN. Using observable data on deuterium, 4He, and 7Li, we set constraints on the variation of the fundamental constants. Results: Results indicate a null variation of α and v, while the best-fit value for the baryon-to-photon ratio agrees well with the WMAP value. Conclusions: We found that the variation of α is null within 3σ, the variation of v is null within 6σ, and the preferred value of the baryon-to-photon ratio is in good agreement, within 3σ, with the value extracted using the WMAP data. We improve the fits respect to previous works
Fil: Mosquera, Mercedes Elisa. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Civitarese, Enrique Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
Materia
Primordial nucleosynthesis
Cosmology: miscellaneous
Cosmological parameters
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/22277
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation valueMosquera, Mercedes ElisaCivitarese, Enrique OsvaldoPrimordial nucleosynthesisCosmology: miscellaneousCosmological parametershttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Aims: We study the time variation of the fine structure constant, α, and the Higgs vacuum expectation value v, during the Big Bang nucleosynthesis (BBN). Methods: We computed primordial abundances of light nuclei produced during the BBN stage by including resonances in the leading reaction rates which reduce the primordial abundance of beryllium. We performed this calculation considering that α and v may vary during the BBN. Using observable data on deuterium, 4He, and 7Li, we set constraints on the variation of the fundamental constants. Results: Results indicate a null variation of α and v, while the best-fit value for the baryon-to-photon ratio agrees well with the WMAP value. Conclusions: We found that the variation of α is null within 3σ, the variation of v is null within 6σ, and the preferred value of the baryon-to-photon ratio is in good agreement, within 3σ, with the value extracted using the WMAP data. We improve the fits respect to previous worksFil: Mosquera, Mercedes Elisa. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Civitarese, Enrique Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaEDP Sciences2013-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/22277Mosquera, Mercedes Elisa; Civitarese, Enrique Osvaldo; New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation value; EDP Sciences; Astronomy and Astrophysics; 551; 3-2013; 122-1300004-63611432-0746CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201220615info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2013/03/aa20615-12/aa20615-12.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:50:19Zoai:ri.conicet.gov.ar:11336/22277instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:50:19.821CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation value
title New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation value
spellingShingle New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation value
Mosquera, Mercedes Elisa
Primordial nucleosynthesis
Cosmology: miscellaneous
Cosmological parameters
title_short New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation value
title_full New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation value
title_fullStr New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation value
title_full_unstemmed New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation value
title_sort New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation value
dc.creator.none.fl_str_mv Mosquera, Mercedes Elisa
Civitarese, Enrique Osvaldo
author Mosquera, Mercedes Elisa
author_facet Mosquera, Mercedes Elisa
Civitarese, Enrique Osvaldo
author_role author
author2 Civitarese, Enrique Osvaldo
author2_role author
dc.subject.none.fl_str_mv Primordial nucleosynthesis
Cosmology: miscellaneous
Cosmological parameters
topic Primordial nucleosynthesis
Cosmology: miscellaneous
Cosmological parameters
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Aims: We study the time variation of the fine structure constant, α, and the Higgs vacuum expectation value v, during the Big Bang nucleosynthesis (BBN). Methods: We computed primordial abundances of light nuclei produced during the BBN stage by including resonances in the leading reaction rates which reduce the primordial abundance of beryllium. We performed this calculation considering that α and v may vary during the BBN. Using observable data on deuterium, 4He, and 7Li, we set constraints on the variation of the fundamental constants. Results: Results indicate a null variation of α and v, while the best-fit value for the baryon-to-photon ratio agrees well with the WMAP value. Conclusions: We found that the variation of α is null within 3σ, the variation of v is null within 6σ, and the preferred value of the baryon-to-photon ratio is in good agreement, within 3σ, with the value extracted using the WMAP data. We improve the fits respect to previous works
Fil: Mosquera, Mercedes Elisa. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Civitarese, Enrique Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
description Aims: We study the time variation of the fine structure constant, α, and the Higgs vacuum expectation value v, during the Big Bang nucleosynthesis (BBN). Methods: We computed primordial abundances of light nuclei produced during the BBN stage by including resonances in the leading reaction rates which reduce the primordial abundance of beryllium. We performed this calculation considering that α and v may vary during the BBN. Using observable data on deuterium, 4He, and 7Li, we set constraints on the variation of the fundamental constants. Results: Results indicate a null variation of α and v, while the best-fit value for the baryon-to-photon ratio agrees well with the WMAP value. Conclusions: We found that the variation of α is null within 3σ, the variation of v is null within 6σ, and the preferred value of the baryon-to-photon ratio is in good agreement, within 3σ, with the value extracted using the WMAP data. We improve the fits respect to previous works
publishDate 2013
dc.date.none.fl_str_mv 2013-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/22277
Mosquera, Mercedes Elisa; Civitarese, Enrique Osvaldo; New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation value; EDP Sciences; Astronomy and Astrophysics; 551; 3-2013; 122-130
0004-6361
1432-0746
CONICET Digital
CONICET
url http://hdl.handle.net/11336/22277
identifier_str_mv Mosquera, Mercedes Elisa; Civitarese, Enrique Osvaldo; New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation value; EDP Sciences; Astronomy and Astrophysics; 551; 3-2013; 122-130
0004-6361
1432-0746
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201220615
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2013/03/aa20615-12/aa20615-12.html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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