Observation of the decay Λ0b → χc1pπ−

The Cabibbo-suppressed decay Λ0b → χc1pπ− is observed for the first time using data from proton-proton collisions corresponding to an integrated luminosity of 6 fb−1, collected with the LHCb detector at a centre-of-mass energy of 13 TeV. Evidence for the Λ0b → χc2pπ− decay is also found. Using the Λ...

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Autores: LHCb Collaboration - CERN, Calvo Gomez, Miriam, Camboni, Alessandro, Golobardes Ribé, Elisabet, Vilasis-Cardona, Xavier
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Universitat Ramon Llull (URL)
Repositorio:DAU Arxiu Digital de la Universitat Ramon Llull
OAI Identifier:oai:dau.url.edu:20.500.14342/3085
Acceso en línea:http://hdl.handle.net/20.500.14342/3085
https://doi.org/10.1007/JHEP05(2021)095
Access Level:acceso abierto
Palabra clave:Gran col·lisionador d'hadrons (França i Suïssa)
Interaccions d'hadrons
Partícules (Física nuclear)
Protons
539
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spelling Observation of the decay Λ0b → χc1pπ−LHCb Collaboration - CERNCalvo Gomez, MiriamCamboni, AlessandroGolobardes Ribé, ElisabetVilasis-Cardona, XavierGran col·lisionador d'hadrons (França i Suïssa)Interaccions d'hadronsPartícules (Física nuclear)Protons539The Cabibbo-suppressed decay Λ0b → χc1pπ− is observed for the first time using data from proton-proton collisions corresponding to an integrated luminosity of 6 fb−1, collected with the LHCb detector at a centre-of-mass energy of 13 TeV. Evidence for the Λ0b → χc2pπ− decay is also found. Using the Λ0b → χc1pK− decay as normalisation channel, the ratios of branching fractions are measured to be: B(Λ0b→χc1pπ−)B(Λ0b→χc1pK−)= 6.59±1.01±0.22)×10−2 B(Λ0b→χc2pπ−)B(Λ0b→χc1pπ−)= 0.95±0.30±0.04±0.04 B(Λ0b→χc2pK−)B(Λ0b→χc1pK−)= 1.06±0.05±0.04±0.04, where the first uncertainty is statistical, the second is systematic and the third is due to the uncertainties in the branching fractions of χc1,2 → J/ψγ decays.SpringerUniversitat Ramon Llull. La SalleCERN20212023202120232021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion21 p.application/pdfhttp://hdl.handle.net/20.500.14342/3085https://doi.org/10.1007/JHEP05(2021)095RECERCAT (Dipòsit de la Recerca de Catalunya)reponame:DAU Arxiu Digital de la Universitat Ramon Llullinstname:Universitat Ramon Llull (URL)InglésJournal of High Energy Physics, 2021, Vol.5, No. 95Attribution 4.0 International© CERNhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:dau.url.edu:20.500.14342/30852026-06-21T06:40:37Z
dc.title.none.fl_str_mv Observation of the decay Λ0b → χc1pπ−
title Observation of the decay Λ0b → χc1pπ−
spellingShingle Observation of the decay Λ0b → χc1pπ−
LHCb Collaboration - CERN
Gran col·lisionador d'hadrons (França i Suïssa)
Interaccions d'hadrons
Partícules (Física nuclear)
Protons
539
title_short Observation of the decay Λ0b → χc1pπ−
title_full Observation of the decay Λ0b → χc1pπ−
title_fullStr Observation of the decay Λ0b → χc1pπ−
title_full_unstemmed Observation of the decay Λ0b → χc1pπ−
title_sort Observation of the decay Λ0b → χc1pπ−
dc.creator.none.fl_str_mv LHCb Collaboration - CERN
Calvo Gomez, Miriam
Camboni, Alessandro
Golobardes Ribé, Elisabet
Vilasis-Cardona, Xavier
author LHCb Collaboration - CERN
author_facet LHCb Collaboration - CERN
Calvo Gomez, Miriam
Camboni, Alessandro
Golobardes Ribé, Elisabet
Vilasis-Cardona, Xavier
author_role author
author2 Calvo Gomez, Miriam
Camboni, Alessandro
Golobardes Ribé, Elisabet
Vilasis-Cardona, Xavier
author2_role author
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)
Interaccions d'hadrons
Partícules (Física nuclear)
Protons
539
topic Gran col·lisionador d'hadrons (França i Suïssa)
Interaccions d'hadrons
Partícules (Física nuclear)
Protons
539
description The Cabibbo-suppressed decay Λ0b → χc1pπ− is observed for the first time using data from proton-proton collisions corresponding to an integrated luminosity of 6 fb−1, collected with the LHCb detector at a centre-of-mass energy of 13 TeV. Evidence for the Λ0b → χc2pπ− decay is also found. Using the Λ0b → χc1pK− decay as normalisation channel, the ratios of branching fractions are measured to be: B(Λ0b→χc1pπ−)B(Λ0b→χc1pK−)= 6.59±1.01±0.22)×10−2 B(Λ0b→χc2pπ−)B(Λ0b→χc1pπ−)= 0.95±0.30±0.04±0.04 B(Λ0b→χc2pK−)B(Λ0b→χc1pK−)= 1.06±0.05±0.04±0.04, where the first uncertainty is statistical, the second is systematic and the third is due to the uncertainties in the branching fractions of χc1,2 → J/ψγ decays.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021
2021
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/20.500.14342/3085
https://doi.org/10.1007/JHEP05(2021)095
url http://hdl.handle.net/20.500.14342/3085
https://doi.org/10.1007/JHEP05(2021)095
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of High Energy Physics, 2021, Vol.5, No. 95
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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