Calculation of primordial abundances of light nuclei including a heavy sterile neutrino

Autores
Mosquera, Mercedes Elisa; Civitarese, Enrique Osvaldo
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We include the coupling of a heavy sterile neutrino with active neutrinos in the calculation of primordial abundances of light-nuclei. We calculate neutrino distribution functions and primordial abundances, as functions depending on a renormalization of the sterile neutrino distribution function (a), the sterile neutrino mass (ms) and the mixing angle (φ). Using the observable data, we set constrains on these parameters, which have the values a < 0.4, sin2 φ ≈ 0.12-0.39 and ms < 7 keV at 1σ level, for a fixed value of the baryon to photon ratio. When the baryon to photon ratio is allowed to vary, its extracted value is in agreement with the values constrained by Planck observations and by the Wilkinson Microwave Anisotropy Probe (WMAP). It is found that the anomaly in the abundance of 7Li persists, in spite of the inclusion of a heavy sterile neutrino.
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. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Materia
BIG BANG NUCLEOSYNTHESIS
NEUTRINO MASSES FROM COSMOLOGY
NEUTRINO PROPERTIES
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:11336/53475
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Calculation of primordial abundances of light nuclei including a heavy sterile neutrinoMosquera, Mercedes ElisaCivitarese, Enrique OsvaldoBIG BANG NUCLEOSYNTHESISNEUTRINO MASSES FROM COSMOLOGYNEUTRINO PROPERTIEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We include the coupling of a heavy sterile neutrino with active neutrinos in the calculation of primordial abundances of light-nuclei. We calculate neutrino distribution functions and primordial abundances, as functions depending on a renormalization of the sterile neutrino distribution function (a), the sterile neutrino mass (ms) and the mixing angle (φ). Using the observable data, we set constrains on these parameters, which have the values a < 0.4, sin2 φ ≈ 0.12-0.39 and ms < 7 keV at 1σ level, for a fixed value of the baryon to photon ratio. When the baryon to photon ratio is allowed to vary, its extracted value is in agreement with the values constrained by Planck observations and by the Wilkinson Microwave Anisotropy Probe (WMAP). It is found that the anomaly in the abundance of 7Li persists, in spite of the inclusion of a heavy sterile neutrino.Fil: 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. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaIOP Publishing2015-08info: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/11336/53475Mosquera, Mercedes Elisa; Civitarese, Enrique Osvaldo; Calculation of primordial abundances of light nuclei including a heavy sterile neutrino; IOP Publishing; Journal of Cosmology and Astroparticle Physics; 2015; 8; 8-2015; 1-141475-7516CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/1475-7516/2015/08/038info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1475-7516/2015/08/038/metainfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1411.4030info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:00:34Zoai:ri.conicet.gov.ar:11336/53475instacron: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 10:00:34.952CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Calculation of primordial abundances of light nuclei including a heavy sterile neutrino
title Calculation of primordial abundances of light nuclei including a heavy sterile neutrino
spellingShingle Calculation of primordial abundances of light nuclei including a heavy sterile neutrino
Mosquera, Mercedes Elisa
BIG BANG NUCLEOSYNTHESIS
NEUTRINO MASSES FROM COSMOLOGY
NEUTRINO PROPERTIES
title_short Calculation of primordial abundances of light nuclei including a heavy sterile neutrino
title_full Calculation of primordial abundances of light nuclei including a heavy sterile neutrino
title_fullStr Calculation of primordial abundances of light nuclei including a heavy sterile neutrino
title_full_unstemmed Calculation of primordial abundances of light nuclei including a heavy sterile neutrino
title_sort Calculation of primordial abundances of light nuclei including a heavy sterile neutrino
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 BIG BANG NUCLEOSYNTHESIS
NEUTRINO MASSES FROM COSMOLOGY
NEUTRINO PROPERTIES
topic BIG BANG NUCLEOSYNTHESIS
NEUTRINO MASSES FROM COSMOLOGY
NEUTRINO PROPERTIES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We include the coupling of a heavy sterile neutrino with active neutrinos in the calculation of primordial abundances of light-nuclei. We calculate neutrino distribution functions and primordial abundances, as functions depending on a renormalization of the sterile neutrino distribution function (a), the sterile neutrino mass (ms) and the mixing angle (φ). Using the observable data, we set constrains on these parameters, which have the values a < 0.4, sin2 φ ≈ 0.12-0.39 and ms < 7 keV at 1σ level, for a fixed value of the baryon to photon ratio. When the baryon to photon ratio is allowed to vary, its extracted value is in agreement with the values constrained by Planck observations and by the Wilkinson Microwave Anisotropy Probe (WMAP). It is found that the anomaly in the abundance of 7Li persists, in spite of the inclusion of a heavy sterile neutrino.
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. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
description We include the coupling of a heavy sterile neutrino with active neutrinos in the calculation of primordial abundances of light-nuclei. We calculate neutrino distribution functions and primordial abundances, as functions depending on a renormalization of the sterile neutrino distribution function (a), the sterile neutrino mass (ms) and the mixing angle (φ). Using the observable data, we set constrains on these parameters, which have the values a < 0.4, sin2 φ ≈ 0.12-0.39 and ms < 7 keV at 1σ level, for a fixed value of the baryon to photon ratio. When the baryon to photon ratio is allowed to vary, its extracted value is in agreement with the values constrained by Planck observations and by the Wilkinson Microwave Anisotropy Probe (WMAP). It is found that the anomaly in the abundance of 7Li persists, in spite of the inclusion of a heavy sterile neutrino.
publishDate 2015
dc.date.none.fl_str_mv 2015-08
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/11336/53475
Mosquera, Mercedes Elisa; Civitarese, Enrique Osvaldo; Calculation of primordial abundances of light nuclei including a heavy sterile neutrino; IOP Publishing; Journal of Cosmology and Astroparticle Physics; 2015; 8; 8-2015; 1-14
1475-7516
CONICET Digital
CONICET
url http://hdl.handle.net/11336/53475
identifier_str_mv Mosquera, Mercedes Elisa; Civitarese, Enrique Osvaldo; Calculation of primordial abundances of light nuclei including a heavy sterile neutrino; IOP Publishing; Journal of Cosmology and Astroparticle Physics; 2015; 8; 8-2015; 1-14
1475-7516
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/1475-7516/2015/08/038
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1475-7516/2015/08/038/meta
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1411.4030
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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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