Effects of active-sterile neutrino mixing during primordial nucleosynthesis

Autores
Civitarese, Enrique Osvaldo; Mosquera, Mercedes Elisa; Sáez, María Manuela
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In the present work, we discuss the effects of the inclusion of sterile-active neutrino oscillations during the production of primordial light-nuclei. We assume that the sterile neutrino mass-eigenstate might oscillate with the two lightest active neutrino mass- eigenstates, with mixing angles phi_1 and phi_2. We also allow a constant renormalization (represented by a parameter (zeta)) of the sterile neutrino occupation factor. Taking zeta and the mixing angles as free parameters, we have computed distribution functions of active and sterile neutrinos and primordial abundances. Using observable data we set constrains in the free parameters of the model. It is found that the data on primordial abundances are consistent with small mixing angles and with a value of zeta smaller than 0.65 at 3sigma level.
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. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
Fil: Mosquera, Mercedes Elisa. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Sáez, María Manuela. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Materia
STERILE NEUTRINO
NEUTRINO MIXING
PRIMORDIAL NUCLEOSYNTHESIS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC 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:11336/101541
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Effects of active-sterile neutrino mixing during primordial nucleosynthesisCivitarese, Enrique OsvaldoMosquera, Mercedes ElisaSáez, María ManuelaSTERILE NEUTRINONEUTRINO MIXINGPRIMORDIAL NUCLEOSYNTHESIShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1In the present work, we discuss the effects of the inclusion of sterile-active neutrino oscillations during the production of primordial light-nuclei. We assume that the sterile neutrino mass-eigenstate might oscillate with the two lightest active neutrino mass- eigenstates, with mixing angles phi_1 and phi_2. We also allow a constant renormalization (represented by a parameter (zeta)) of the sterile neutrino occupation factor. Taking zeta and the mixing angles as free parameters, we have computed distribution functions of active and sterile neutrinos and primordial abundances. Using observable data we set constrains in the free parameters of the model. It is found that the data on primordial abundances are consistent with small mixing angles and with a value of zeta smaller than 0.65 at 3sigma level.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. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaFil: Mosquera, Mercedes Elisa. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Sáez, María Manuela. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaWorld Scientific2014-11info: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/11336/101541Civitarese, Enrique Osvaldo; Mosquera, Mercedes Elisa; Sáez, María Manuela; Effects of active-sterile neutrino mixing during primordial nucleosynthesis; World Scientific; International Journal of Modern Physics E - Nuclear Physics; 23; 12; 11-2014; 1450080-14500880218-3013CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.worldscientific.com/doi/abs/10.1142/S0218301314500803info:eu-repo/semantics/altIdentifier/doi/10.1142/S0218301314500803info:eu-repo/semantics/openAccessAtribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR)https://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:39:32Zoai:ri.conicet.gov.ar:11336/101541instacron: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 09:39:32.295CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effects of active-sterile neutrino mixing during primordial nucleosynthesis
title Effects of active-sterile neutrino mixing during primordial nucleosynthesis
spellingShingle Effects of active-sterile neutrino mixing during primordial nucleosynthesis
Civitarese, Enrique Osvaldo
STERILE NEUTRINO
NEUTRINO MIXING
PRIMORDIAL NUCLEOSYNTHESIS
title_short Effects of active-sterile neutrino mixing during primordial nucleosynthesis
title_full Effects of active-sterile neutrino mixing during primordial nucleosynthesis
title_fullStr Effects of active-sterile neutrino mixing during primordial nucleosynthesis
title_full_unstemmed Effects of active-sterile neutrino mixing during primordial nucleosynthesis
title_sort Effects of active-sterile neutrino mixing during primordial nucleosynthesis
dc.creator.none.fl_str_mv Civitarese, Enrique Osvaldo
Mosquera, Mercedes Elisa
Sáez, María Manuela
author Civitarese, Enrique Osvaldo
author_facet Civitarese, Enrique Osvaldo
Mosquera, Mercedes Elisa
Sáez, María Manuela
author_role author
author2 Mosquera, Mercedes Elisa
Sáez, María Manuela
author2_role author
author
dc.subject.none.fl_str_mv STERILE NEUTRINO
NEUTRINO MIXING
PRIMORDIAL NUCLEOSYNTHESIS
topic STERILE NEUTRINO
NEUTRINO MIXING
PRIMORDIAL NUCLEOSYNTHESIS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In the present work, we discuss the effects of the inclusion of sterile-active neutrino oscillations during the production of primordial light-nuclei. We assume that the sterile neutrino mass-eigenstate might oscillate with the two lightest active neutrino mass- eigenstates, with mixing angles phi_1 and phi_2. We also allow a constant renormalization (represented by a parameter (zeta)) of the sterile neutrino occupation factor. Taking zeta and the mixing angles as free parameters, we have computed distribution functions of active and sterile neutrinos and primordial abundances. Using observable data we set constrains in the free parameters of the model. It is found that the data on primordial abundances are consistent with small mixing angles and with a value of zeta smaller than 0.65 at 3sigma level.
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. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
Fil: Mosquera, Mercedes Elisa. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Sáez, María Manuela. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
description In the present work, we discuss the effects of the inclusion of sterile-active neutrino oscillations during the production of primordial light-nuclei. We assume that the sterile neutrino mass-eigenstate might oscillate with the two lightest active neutrino mass- eigenstates, with mixing angles phi_1 and phi_2. We also allow a constant renormalization (represented by a parameter (zeta)) of the sterile neutrino occupation factor. Taking zeta and the mixing angles as free parameters, we have computed distribution functions of active and sterile neutrinos and primordial abundances. Using observable data we set constrains in the free parameters of the model. It is found that the data on primordial abundances are consistent with small mixing angles and with a value of zeta smaller than 0.65 at 3sigma level.
publishDate 2014
dc.date.none.fl_str_mv 2014-11
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/11336/101541
Civitarese, Enrique Osvaldo; Mosquera, Mercedes Elisa; Sáez, María Manuela; Effects of active-sterile neutrino mixing during primordial nucleosynthesis; World Scientific; International Journal of Modern Physics E - Nuclear Physics; 23; 12; 11-2014; 1450080-1450088
0218-3013
CONICET Digital
CONICET
url http://hdl.handle.net/11336/101541
identifier_str_mv Civitarese, Enrique Osvaldo; Mosquera, Mercedes Elisa; Sáez, María Manuela; Effects of active-sterile neutrino mixing during primordial nucleosynthesis; World Scientific; International Journal of Modern Physics E - Nuclear Physics; 23; 12; 11-2014; 1450080-1450088
0218-3013
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.worldscientific.com/doi/abs/10.1142/S0218301314500803
info:eu-repo/semantics/altIdentifier/doi/10.1142/S0218301314500803
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR)
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR)
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 World Scientific
publisher.none.fl_str_mv World Scientific
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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