On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypotheses

Autores
Roulet, Esteban; Vissani, Francesco
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The capture rates of non-relativistic neutrinos on beta decaying nuclei depends on whether their mass is Dirac or Majorana. It is known that for relic neutrinos from the big-bang, and within minimal assumptions, the rate is a factor two larger in the Majorana case. We show that this difference also depends on the value of the lightest neutrino mass and on the type of mass hierarchy. If the lightest neutrino has a mass below the meV, so that it is still relativistic today, its capture rate for the case of Dirac masses becomes equal to that for Majorana masses. As a consequence, for the case of normal neutrino mass hierarchy, for which the total capture rate is dominated by the contribution from the lightest neutrino, if this one is below the meV the distinction between the Dirac and Majorana scenarios can only rely on the detection of the two heavier neutrinos, which is something very challenging.
Fil: Roulet, Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Vissani, Francesco. Laboratori Nazionali del Gran Sasso; Italia
Materia
COSMOLOGICAL NEUTRINOS
NEUTRINO EXPER- IMENTS
PARTICLE PHYSICS - COSMOLOGY CONNECTION
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:11336/112549
Acceder
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network_name_str CONICET Digital (CONICET)
spelling On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypothesesRoulet, EstebanVissani, FrancescoCOSMOLOGICAL NEUTRINOSNEUTRINO EXPER- IMENTSPARTICLE PHYSICS - COSMOLOGY CONNECTIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The capture rates of non-relativistic neutrinos on beta decaying nuclei depends on whether their mass is Dirac or Majorana. It is known that for relic neutrinos from the big-bang, and within minimal assumptions, the rate is a factor two larger in the Majorana case. We show that this difference also depends on the value of the lightest neutrino mass and on the type of mass hierarchy. If the lightest neutrino has a mass below the meV, so that it is still relativistic today, its capture rate for the case of Dirac masses becomes equal to that for Majorana masses. As a consequence, for the case of normal neutrino mass hierarchy, for which the total capture rate is dominated by the contribution from the lightest neutrino, if this one is below the meV the distinction between the Dirac and Majorana scenarios can only rely on the detection of the two heavier neutrinos, which is something very challenging.Fil: Roulet, Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Vissani, Francesco. Laboratori Nazionali del Gran Sasso; ItaliaIOP Publishing2018-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/112549Roulet, Esteban; Vissani, Francesco; On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypotheses; IOP Publishing; Journal of Cosmology and Astroparticle Physics; 2018; 10; 10-2018; 1-121475-7516CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/1475-7516/2018/10/049info:eu-repo/semantics/altIdentifier/doi/10.1088/1475-7516/2018/10/049info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:43:09Zoai:ri.conicet.gov.ar:11336/112549instacron: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 09:43:09.743CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypotheses
title On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypotheses
spellingShingle On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypotheses
Roulet, Esteban
COSMOLOGICAL NEUTRINOS
NEUTRINO EXPER- IMENTS
PARTICLE PHYSICS - COSMOLOGY CONNECTION
title_short On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypotheses
title_full On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypotheses
title_fullStr On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypotheses
title_full_unstemmed On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypotheses
title_sort On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypotheses
dc.creator.none.fl_str_mv Roulet, Esteban
Vissani, Francesco
author Roulet, Esteban
author_facet Roulet, Esteban
Vissani, Francesco
author_role author
author2 Vissani, Francesco
author2_role author
dc.subject.none.fl_str_mv COSMOLOGICAL NEUTRINOS
NEUTRINO EXPER- IMENTS
PARTICLE PHYSICS - COSMOLOGY CONNECTION
topic COSMOLOGICAL NEUTRINOS
NEUTRINO EXPER- IMENTS
PARTICLE PHYSICS - COSMOLOGY CONNECTION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The capture rates of non-relativistic neutrinos on beta decaying nuclei depends on whether their mass is Dirac or Majorana. It is known that for relic neutrinos from the big-bang, and within minimal assumptions, the rate is a factor two larger in the Majorana case. We show that this difference also depends on the value of the lightest neutrino mass and on the type of mass hierarchy. If the lightest neutrino has a mass below the meV, so that it is still relativistic today, its capture rate for the case of Dirac masses becomes equal to that for Majorana masses. As a consequence, for the case of normal neutrino mass hierarchy, for which the total capture rate is dominated by the contribution from the lightest neutrino, if this one is below the meV the distinction between the Dirac and Majorana scenarios can only rely on the detection of the two heavier neutrinos, which is something very challenging.
Fil: Roulet, Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Vissani, Francesco. Laboratori Nazionali del Gran Sasso; Italia
description The capture rates of non-relativistic neutrinos on beta decaying nuclei depends on whether their mass is Dirac or Majorana. It is known that for relic neutrinos from the big-bang, and within minimal assumptions, the rate is a factor two larger in the Majorana case. We show that this difference also depends on the value of the lightest neutrino mass and on the type of mass hierarchy. If the lightest neutrino has a mass below the meV, so that it is still relativistic today, its capture rate for the case of Dirac masses becomes equal to that for Majorana masses. As a consequence, for the case of normal neutrino mass hierarchy, for which the total capture rate is dominated by the contribution from the lightest neutrino, if this one is below the meV the distinction between the Dirac and Majorana scenarios can only rely on the detection of the two heavier neutrinos, which is something very challenging.
publishDate 2018
dc.date.none.fl_str_mv 2018-10
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/11336/112549
Roulet, Esteban; Vissani, Francesco; On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypotheses; IOP Publishing; Journal of Cosmology and Astroparticle Physics; 2018; 10; 10-2018; 1-12
1475-7516
CONICET Digital
CONICET
url http://hdl.handle.net/11336/112549
identifier_str_mv Roulet, Esteban; Vissani, Francesco; On the capture rates of big bang neutrinos by nuclei within the Dirac and Majorana hypotheses; IOP Publishing; Journal of Cosmology and Astroparticle Physics; 2018; 10; 10-2018; 1-12
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/url/https://iopscience.iop.org/article/10.1088/1475-7516/2018/10/049
info:eu-repo/semantics/altIdentifier/doi/10.1088/1475-7516/2018/10/049
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
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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