Search for heavy neutrinos with the T2K near detector ND280

This paper reports on the search for heavy neutrinos with masses in the range 140<MN<493 MeV/c2 using the off-axis near detector ND280 of the T2K experiment. These particles can be produced from kaon decays in the standard neutrino beam and then subsequently decay in ND280. The decay modes und...

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Detalles Bibliográficos
Autores: T2K Collaboration, Antonova, M., Cervera Villanueva, Anselmo, Fernandez Menendez, Pablo, Izmaylov, A., Novella, Pau
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/208141
Acceso en línea:http://hdl.handle.net/10261/208141
Access Level:acceso abierto
Palabra clave:ddc:500.2
ddc:530
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spelling Search for heavy neutrinos with the T2K near detector ND280T2K CollaborationAntonova, M.Cervera Villanueva, AnselmoFernandez Menendez, PabloIzmaylov, A.Novella, Pauddc:500.2ddc:530This paper reports on the search for heavy neutrinos with masses in the range 140<MN<493 MeV/c2 using the off-axis near detector ND280 of the T2K experiment. These particles can be produced from kaon decays in the standard neutrino beam and then subsequently decay in ND280. The decay modes under consideration are N→ℓα±π and N→ℓα+ℓβ-ν(-)(α,β=e,μ). A search for such events has been made using the Time Projection Chambers of ND280, where the background has been reduced to less than two events in the current dataset in all channels. No excess has been observed in the signal region. A combined Bayesian statistical approach has been applied to extract upper limits on the mixing elements of heavy neutrinos to electron-, muon- and tau- flavored currents (Ue2, Uμ2, Uτ2) as a function of the heavy neutrino mass, e.g., Ue2<10-9 at 90% C.L. for a mass of 390 MeV/c2. These constraints are competitive with previous experiments.Ministerio de Ciencia, Innovación y Universidades (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202020192020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/208141reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FPA2016-78417-C2-1-Phttp://dx.doi.org/10.1103/PhysRevD.100.052006Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2081412026-05-22T06:33:51Z
dc.title.none.fl_str_mv Search for heavy neutrinos with the T2K near detector ND280
title Search for heavy neutrinos with the T2K near detector ND280
spellingShingle Search for heavy neutrinos with the T2K near detector ND280
T2K Collaboration
ddc:500.2
ddc:530
title_short Search for heavy neutrinos with the T2K near detector ND280
title_full Search for heavy neutrinos with the T2K near detector ND280
title_fullStr Search for heavy neutrinos with the T2K near detector ND280
title_full_unstemmed Search for heavy neutrinos with the T2K near detector ND280
title_sort Search for heavy neutrinos with the T2K near detector ND280
dc.creator.none.fl_str_mv T2K Collaboration
Antonova, M.
Cervera Villanueva, Anselmo
Fernandez Menendez, Pablo
Izmaylov, A.
Novella, Pau
author T2K Collaboration
author_facet T2K Collaboration
Antonova, M.
Cervera Villanueva, Anselmo
Fernandez Menendez, Pablo
Izmaylov, A.
Novella, Pau
author_role author
author2 Antonova, M.
Cervera Villanueva, Anselmo
Fernandez Menendez, Pablo
Izmaylov, A.
Novella, Pau
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv ddc:500.2
ddc:530
topic ddc:500.2
ddc:530
description This paper reports on the search for heavy neutrinos with masses in the range 140<MN<493 MeV/c2 using the off-axis near detector ND280 of the T2K experiment. These particles can be produced from kaon decays in the standard neutrino beam and then subsequently decay in ND280. The decay modes under consideration are N→ℓα±π and N→ℓα+ℓβ-ν(-)(α,β=e,μ). A search for such events has been made using the Time Projection Chambers of ND280, where the background has been reduced to less than two events in the current dataset in all channels. No excess has been observed in the signal region. A combined Bayesian statistical approach has been applied to extract upper limits on the mixing elements of heavy neutrinos to electron-, muon- and tau- flavored currents (Ue2, Uμ2, Uτ2) as a function of the heavy neutrino mass, e.g., Ue2<10-9 at 90% C.L. for a mass of 390 MeV/c2. These constraints are competitive with previous experiments.
publishDate 2019
dc.date.none.fl_str_mv 2019
2020
2020
2020
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/10261/208141
url http://hdl.handle.net/10261/208141
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/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FPA2016-78417-C2-1-P
http://dx.doi.org/10.1103/PhysRevD.100.052006
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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
repository.name.fl_str_mv
repository.mail.fl_str_mv
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