Measurement of CP Violation Observables in D+ →k-K+π+ Decays

A search for violation of the charge-parity (CP) symmetry in the D+→K-K+π+ decay is presented, with proton-proton collision data corresponding to an integrated luminosity of 5.4 fb-1, collected at a center-of-mass energy of 13 TeV with the LHCb detector. A novel model-independent technique is used t...

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Detalhes bibliográficos
Autores: Golobardes Ribé, Elisabet, Vilasis-Cardona, Xavier, Calvo Gomez, Miriam, LHCb Collaboration - CERN
Formato: artículo
Fecha de publicación:2024
País:España
Recursos:Universitat Ramon Llull (URL)
Repositorio:DAU Arxiu Digital de la Universitat Ramon Llull
OAI Identifier:oai:dau.url.edu:20.500.14342/5820
Acesso em linha:http://hdl.handle.net/20.500.14342/5820
https://doi.org/10.1103/PhysRevLett.133.251801
Access Level:acceso abierto
Palavra-chave:Hadronic decays
Charm quark
Charmed mesons
CP violation
Hadron colliders
Particle data analysis
Gran col·lisionador d'hadrons (França i Suïssa)
53
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539
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spelling Measurement of CP Violation Observables in D+ →k-K+π+ DecaysGolobardes Ribé, ElisabetVilasis-Cardona, XavierCalvo Gomez, MiriamLHCb Collaboration - CERNHadronic decaysCharm quarkCharmed mesonsCP violationHadron collidersParticle data analysisGran col·lisionador d'hadrons (França i Suïssa)53530.1539A search for violation of the charge-parity (CP) symmetry in the D+→K-K+π+ decay is presented, with proton-proton collision data corresponding to an integrated luminosity of 5.4 fb-1, collected at a center-of-mass energy of 13 TeV with the LHCb detector. A novel model-independent technique is used to compare the D+ and D- phase-space distributions, with instrumental asymmetries subtracted using the Ds+→K-K+π+ decay as a control channel. The p value for the hypothesis of CP conservation is 8.1%. The CP asymmetry observables ACP|Sφπ+=(0.95±0.43stat±0.26syst)×10-3 and ACP|SK̄∗0K+=(-0.26±0.56stat±0.18syst)×10-3 are also measured. These results show no evidence of CP violation and represent the most sensitive search performed through the phase space of a multibody decay.info:eu-repo/semantics/publishedVersionAmerican Physical SocietyUniversitat Ramon Llull. La SalleCERN2026202620242024info:eu-repo/semantics/article13 p.application/pdfhttp://hdl.handle.net/20.500.14342/5820https://doi.org/10.1103/PhysRevLett.133.251801reponame:DAU Arxiu Digital de la Universitat Ramon Llullinstname:Universitat Ramon Llull (URL)InglésPhysical Review Letters. 2025. Vol. 1330 - 251801© CERNAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:dau.url.edu:20.500.14342/58202026-06-21T06:40:37Z
dc.title.none.fl_str_mv Measurement of CP Violation Observables in D+ →k-K+π+ Decays
title Measurement of CP Violation Observables in D+ →k-K+π+ Decays
spellingShingle Measurement of CP Violation Observables in D+ →k-K+π+ Decays
Golobardes Ribé, Elisabet
Hadronic decays
Charm quark
Charmed mesons
CP violation
Hadron colliders
Particle data analysis
Gran col·lisionador d'hadrons (França i Suïssa)
53
530.1
539
title_short Measurement of CP Violation Observables in D+ →k-K+π+ Decays
title_full Measurement of CP Violation Observables in D+ →k-K+π+ Decays
title_fullStr Measurement of CP Violation Observables in D+ →k-K+π+ Decays
title_full_unstemmed Measurement of CP Violation Observables in D+ →k-K+π+ Decays
title_sort Measurement of CP Violation Observables in D+ →k-K+π+ Decays
dc.creator.none.fl_str_mv Golobardes Ribé, Elisabet
Vilasis-Cardona, Xavier
Calvo Gomez, Miriam
LHCb Collaboration - CERN
author Golobardes Ribé, Elisabet
author_facet Golobardes Ribé, Elisabet
Vilasis-Cardona, Xavier
Calvo Gomez, Miriam
LHCb Collaboration - CERN
author_role author
author2 Vilasis-Cardona, Xavier
Calvo Gomez, Miriam
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 Hadronic decays
Charm quark
Charmed mesons
CP violation
Hadron colliders
Particle data analysis
Gran col·lisionador d'hadrons (França i Suïssa)
53
530.1
539
topic Hadronic decays
Charm quark
Charmed mesons
CP violation
Hadron colliders
Particle data analysis
Gran col·lisionador d'hadrons (França i Suïssa)
53
530.1
539
description A search for violation of the charge-parity (CP) symmetry in the D+→K-K+π+ decay is presented, with proton-proton collision data corresponding to an integrated luminosity of 5.4 fb-1, collected at a center-of-mass energy of 13 TeV with the LHCb detector. A novel model-independent technique is used to compare the D+ and D- phase-space distributions, with instrumental asymmetries subtracted using the Ds+→K-K+π+ decay as a control channel. The p value for the hypothesis of CP conservation is 8.1%. The CP asymmetry observables ACP|Sφπ+=(0.95±0.43stat±0.26syst)×10-3 and ACP|SK̄∗0K+=(-0.26±0.56stat±0.18syst)×10-3 are also measured. These results show no evidence of CP violation and represent the most sensitive search performed through the phase space of a multibody decay.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.14342/5820
https://doi.org/10.1103/PhysRevLett.133.251801
url http://hdl.handle.net/20.500.14342/5820
https://doi.org/10.1103/PhysRevLett.133.251801
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Physical Review Letters. 2025. Vol. 1330 - 251801
dc.rights.none.fl_str_mv © CERN
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © CERN
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 13 p.
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv 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
_version_ 1869422449451335680
score 15.811543

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