Search for the Λ 0b  → Λη ′ and Λ 0b  → Λη decays with the LHCb detector

A search is performed for the as yet unobserved baryonic Λ 0b  → Λη ′ and Λ 0b  → Λη decays with 3 fb−1 of proton-proton collision data recorded by the LHCb experiment. The B0 → K 0s η ′ decay is used as a normalisation channel. No significant signal is observed for the Λ 0b  → Λη ′ decay. An upper...

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Detalles Bibliográficos
Autores: Badalov, Alexey, Calvo Gómez, Míriam, Vilasís Cardona, Xavier, LHCb Collaboration - CERN
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:España
Institución:Universitat Ramon Llull (URL)
Repositorio:DAU Arxiu Digital de la Universitat Ramon Llull
OAI Identifier:oai:dau.url.edu:20.500.14342/3136
Acceso en línea:http://hdl.handle.net/20.500.14342/3136
https://doi.org/10.1007/JHEP09(2015)006
Access Level:acceso abierto
Palabra clave:Gran col·lisionador d'hadrons (França i Suïssa)
Partícules (Física nuclear)
Protons
Col·lisions (Física nuclear)
539
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spelling Search for the Λ 0b  → Λη ′ and Λ 0b  → Λη decays with the LHCb detectorBadalov, AlexeyCalvo Gómez, MíriamVilasís Cardona, XavierLHCb Collaboration - CERNGran col·lisionador d'hadrons (França i Suïssa)Partícules (Física nuclear)ProtonsCol·lisions (Física nuclear)539A search is performed for the as yet unobserved baryonic Λ 0b  → Λη ′ and Λ 0b  → Λη decays with 3 fb−1 of proton-proton collision data recorded by the LHCb experiment. The B0 → K 0s η ′ decay is used as a normalisation channel. No significant signal is observed for the Λ 0b  → Λη ′ decay. An upper limit is found on the branching fraction of B(Λ0b→Λη′) < 3.1 × 10−6 at 90% confidence level. Evidence is seen for the presence of the Λ 0b  → Λη decay at the level of 3σ significance, with a branching fraction B(Λ0b→Λη)=(9.3+7.3−5.3)×10−6.SpringerUniversitat Ramon Llull. La SalleCERN202020232020202320152015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion21 p.application/pdfhttp://hdl.handle.net/20.500.14342/3136https://doi.org/10.1007/JHEP09(2015)006RECERCAT (Dipòsit de la Recerca de Catalunya)reponame:DAU Arxiu Digital de la Universitat Ramon Llullinstname:Universitat Ramon Llull (URL)InglésJournal of High Energy Physics, 2015, Vol. 2015, No.6 (Setembre)Attribution 4.0 International© CERNhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:dau.url.edu:20.500.14342/31362026-06-21T06:40:37Z
dc.title.none.fl_str_mv Search for the Λ 0b  → Λη ′ and Λ 0b  → Λη decays with the LHCb detector
title Search for the Λ 0b  → Λη ′ and Λ 0b  → Λη decays with the LHCb detector
spellingShingle Search for the Λ 0b  → Λη ′ and Λ 0b  → Λη decays with the LHCb detector
Badalov, Alexey
Gran col·lisionador d'hadrons (França i Suïssa)
Partícules (Física nuclear)
Protons
Col·lisions (Física nuclear)
539
title_short Search for the Λ 0b  → Λη ′ and Λ 0b  → Λη decays with the LHCb detector
title_full Search for the Λ 0b  → Λη ′ and Λ 0b  → Λη decays with the LHCb detector
title_fullStr Search for the Λ 0b  → Λη ′ and Λ 0b  → Λη decays with the LHCb detector
title_full_unstemmed Search for the Λ 0b  → Λη ′ and Λ 0b  → Λη decays with the LHCb detector
title_sort Search for the Λ 0b  → Λη ′ and Λ 0b  → Λη decays with the LHCb detector
dc.creator.none.fl_str_mv Badalov, Alexey
Calvo Gómez, Míriam
Vilasís Cardona, Xavier
LHCb Collaboration - CERN
author Badalov, Alexey
author_facet Badalov, Alexey
Calvo Gómez, Míriam
Vilasís Cardona, Xavier
LHCb Collaboration - CERN
author_role author
author2 Calvo Gómez, Míriam
Vilasís Cardona, Xavier
LHCb Collaboration - CERN
author2_role author
author
author
dc.contributor.none.fl_str_mv Universitat Ramon Llull. La Salle
CERN
dc.subject.none.fl_str_mv Gran col·lisionador d'hadrons (França i Suïssa)
Partícules (Física nuclear)
Protons
Col·lisions (Física nuclear)
539
topic Gran col·lisionador d'hadrons (França i Suïssa)
Partícules (Física nuclear)
Protons
Col·lisions (Física nuclear)
539
description A search is performed for the as yet unobserved baryonic Λ 0b  → Λη ′ and Λ 0b  → Λη decays with 3 fb−1 of proton-proton collision data recorded by the LHCb experiment. The B0 → K 0s η ′ decay is used as a normalisation channel. No significant signal is observed for the Λ 0b  → Λη ′ decay. An upper limit is found on the branching fraction of B(Λ0b→Λη′) < 3.1 × 10−6 at 90% confidence level. Evidence is seen for the presence of the Λ 0b  → Λη decay at the level of 3σ significance, with a branching fraction B(Λ0b→Λη)=(9.3+7.3−5.3)×10−6.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015
2020
2020
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.14342/3136
https://doi.org/10.1007/JHEP09(2015)006
url http://hdl.handle.net/20.500.14342/3136
https://doi.org/10.1007/JHEP09(2015)006
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of High Energy Physics, 2015, Vol. 2015, No.6 (Setembre)
dc.rights.none.fl_str_mv Attribution 4.0 International
© CERN
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
© CERN
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 21 p.
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv RECERCAT (Dipòsit de la Recerca de Catalunya)
reponame:DAU Arxiu Digital de la Universitat Ramon Llull
instname:Universitat Ramon Llull (URL)
instname_str Universitat Ramon Llull (URL)
reponame_str DAU Arxiu Digital de la Universitat Ramon Llull
collection DAU Arxiu Digital de la Universitat Ramon Llull
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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