First Observation of CP Violation in the Decays of B0s Mesons

Using pp collision data corresponding to an integrated luminosity of 1.0  fb−1 and collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measurement of direct CP violation in B0s→K−π+ decays, ACP(B0s→K−π+)=0.27±0.04 (stat)±0.01 (syst), with significance exceeding 5 standard de...

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Detalhes bibliográficos
Autores: Calvo Gómez, Míriam, Camboni, Alessandro, Vilasís Cardona, Xavier, LHCb Collaboration - CERN
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2013
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositório:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:20.500.14342/3277
Acesso em linha:http://hdl.handle.net/20.500.14342/3277
https://doi.org/10.1103/PhysRevLett.110.221601
Access Level:Acceso aberto
Palavra-chave:Gran col·lisionador d'hadrons (França i Suïssa)
Partícules (Física nuclear)
Mesons
53
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spelling First Observation of CP Violation in the Decays of B0s MesonsCalvo Gómez, MíriamCamboni, AlessandroVilasís Cardona, XavierLHCb Collaboration - CERNGran col·lisionador d'hadrons (França i Suïssa)Partícules (Física nuclear)Mesons53Using pp collision data corresponding to an integrated luminosity of 1.0  fb−1 and collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measurement of direct CP violation in B0s→K−π+ decays, ACP(B0s→K−π+)=0.27±0.04 (stat)±0.01 (syst), with significance exceeding 5 standard deviations. This is the first observation of CP violation in the decays of B0s mesons. Furthermore, we provide an improved determination of direct CP violation in B0→K+π− decays, ACP(B0→K+π−)=−0.080±0.007 (stat)±0.003 (syst), which is the most precise measurement of this quantity to date.American Physical SocietyUniversitat Ramon Llull. La SalleCERN2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion9 p.http://hdl.handle.net/20.500.14342/3277https://doi.org/10.1103/PhysRevLett.110.221601reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésPhysical Review Letters, 2013, Vol. 110, No. 22 (Maig)Attribution 4.0 International© CERNhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:20.500.14342/32772026-05-29T05:05:01Z
dc.title.none.fl_str_mv First Observation of CP Violation in the Decays of B0s Mesons
title First Observation of CP Violation in the Decays of B0s Mesons
spellingShingle First Observation of CP Violation in the Decays of B0s Mesons
Calvo Gómez, Míriam
Gran col·lisionador d'hadrons (França i Suïssa)
Partícules (Física nuclear)
Mesons
53
title_short First Observation of CP Violation in the Decays of B0s Mesons
title_full First Observation of CP Violation in the Decays of B0s Mesons
title_fullStr First Observation of CP Violation in the Decays of B0s Mesons
title_full_unstemmed First Observation of CP Violation in the Decays of B0s Mesons
title_sort First Observation of CP Violation in the Decays of B0s Mesons
dc.creator.none.fl_str_mv Calvo Gómez, Míriam
Camboni, Alessandro
Vilasís Cardona, Xavier
LHCb Collaboration - CERN
author Calvo Gómez, Míriam
author_facet Calvo Gómez, Míriam
Camboni, Alessandro
Vilasís Cardona, Xavier
LHCb Collaboration - CERN
author_role author
author2 Camboni, Alessandro
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)
Mesons
53
topic Gran col·lisionador d'hadrons (França i Suïssa)
Partícules (Física nuclear)
Mesons
53
description Using pp collision data corresponding to an integrated luminosity of 1.0  fb−1 and collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measurement of direct CP violation in B0s→K−π+ decays, ACP(B0s→K−π+)=0.27±0.04 (stat)±0.01 (syst), with significance exceeding 5 standard deviations. This is the first observation of CP violation in the decays of B0s mesons. Furthermore, we provide an improved determination of direct CP violation in B0→K+π− decays, ACP(B0→K+π−)=−0.080±0.007 (stat)±0.003 (syst), which is the most precise measurement of this quantity to date.
publishDate 2013
dc.date.none.fl_str_mv 2013
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/20.500.14342/3277
https://doi.org/10.1103/PhysRevLett.110.221601
url http://hdl.handle.net/20.500.14342/3277
https://doi.org/10.1103/PhysRevLett.110.221601
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Physical Review Letters, 2013, Vol. 110, No. 22 (Maig)
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 9 p.
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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