Search for D0 meson decays to π+π-e+e- and K+K-e+e- final states

A search for D0 meson decays to the π+π-e+e- and K+K-e+e- final states is reported using a sample of proton-proton collisions collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb-1. The decay D0→π+π-e+e- is observed for the first ti...

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Detalles Bibliográficos
Autores: Calvo Gomez, Miriam, Golobardes Ribé, Elisabet, Vilasis-Cardona, Xavier, LHCb Collaboration - CERN
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universitat Ramon Llull (URL)
Repositorio:DAU Arxiu Digital de la Universitat Ramon Llull
OAI Identifier:oai:dau.url.edu:20.500.14342/5975
Acceso en línea:http://hdl.handle.net/20.500.14342/5975
https://doi.org/10.1103/PhysRevD.111.L091101
Access Level:acceso abierto
Palabra clave:Branching fraction
Electroweak interaction
Leptonic, semileptonic and radiactive decays
Particle decay
Rare decays
Charmed mesons
Gran col·lisionador d'hadrons (França i Suïssa)
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539
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spelling Search for D0 meson decays to π+π-e+e- and K+K-e+e- final statesCalvo Gomez, MiriamGolobardes Ribé, ElisabetVilasis-Cardona, XavierLHCb Collaboration - CERNBranching fractionElectroweak interactionLeptonic, semileptonic and radiactive decaysParticle decayRare decaysCharmed mesonsGran col·lisionador d'hadrons (França i Suïssa)530.1539A search for D0 meson decays to the π+π-e+e- and K+K-e+e- final states is reported using a sample of proton-proton collisions collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb-1. The decay D0→π+π-e+e- is observed for the first time when requiring that the two electrons are consistent with coming from the decay of a φ or ρ0/ω meson. The corresponding branching fractions are measured relative to the D0→K-π-[e+e-]ρ0/ω decay, where the two electrons are consistent with coming from the decay of a ρ0 or ω meson. No evidence is found for the D0→K+K-e+e- decay and world-best limits are set on its branching fraction. The results are compared to, and found to be consistent with, the branching fractions of the D0→π+π-μ+μ- and D0→K+K-μ+μ- decays recently measured by LHCb and confirm lepton universality at the current precision.info:eu-repo/semantics/publishedVersionAmerican Physical SocietyUniversitat Ramon Llull. La SalleCERN2026202620242025info:eu-repo/semantics/article13 p.application/pdfhttp://hdl.handle.net/20.500.14342/5975https://doi.org/10.1103/PhysRevD.111.L091101reponame:DAU Arxiu Digital de la Universitat Ramon Llullinstname:Universitat Ramon Llull (URL)InglésPhysical Review D, 2025. Vol. 111, L091101© CERNAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:dau.url.edu:20.500.14342/59752026-06-21T06:40:37Z
dc.title.none.fl_str_mv Search for D0 meson decays to π+π-e+e- and K+K-e+e- final states
title Search for D0 meson decays to π+π-e+e- and K+K-e+e- final states
spellingShingle Search for D0 meson decays to π+π-e+e- and K+K-e+e- final states
Calvo Gomez, Miriam
Branching fraction
Electroweak interaction
Leptonic, semileptonic and radiactive decays
Particle decay
Rare decays
Charmed mesons
Gran col·lisionador d'hadrons (França i Suïssa)
530.1
539
title_short Search for D0 meson decays to π+π-e+e- and K+K-e+e- final states
title_full Search for D0 meson decays to π+π-e+e- and K+K-e+e- final states
title_fullStr Search for D0 meson decays to π+π-e+e- and K+K-e+e- final states
title_full_unstemmed Search for D0 meson decays to π+π-e+e- and K+K-e+e- final states
title_sort Search for D0 meson decays to π+π-e+e- and K+K-e+e- final states
dc.creator.none.fl_str_mv Calvo Gomez, Miriam
Golobardes Ribé, Elisabet
Vilasis-Cardona, Xavier
LHCb Collaboration - CERN
author Calvo Gomez, Miriam
author_facet Calvo Gomez, Miriam
Golobardes Ribé, Elisabet
Vilasis-Cardona, Xavier
LHCb Collaboration - CERN
author_role author
author2 Golobardes Ribé, Elisabet
Vilasis-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 Branching fraction
Electroweak interaction
Leptonic, semileptonic and radiactive decays
Particle decay
Rare decays
Charmed mesons
Gran col·lisionador d'hadrons (França i Suïssa)
530.1
539
topic Branching fraction
Electroweak interaction
Leptonic, semileptonic and radiactive decays
Particle decay
Rare decays
Charmed mesons
Gran col·lisionador d'hadrons (França i Suïssa)
530.1
539
description A search for D0 meson decays to the π+π-e+e- and K+K-e+e- final states is reported using a sample of proton-proton collisions collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb-1. The decay D0→π+π-e+e- is observed for the first time when requiring that the two electrons are consistent with coming from the decay of a φ or ρ0/ω meson. The corresponding branching fractions are measured relative to the D0→K-π-[e+e-]ρ0/ω decay, where the two electrons are consistent with coming from the decay of a ρ0 or ω meson. No evidence is found for the D0→K+K-e+e- decay and world-best limits are set on its branching fraction. The results are compared to, and found to be consistent with, the branching fractions of the D0→π+π-μ+μ- and D0→K+K-μ+μ- decays recently measured by LHCb and confirm lepton universality at the current precision.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
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/20.500.14342/5975
https://doi.org/10.1103/PhysRevD.111.L091101
url http://hdl.handle.net/20.500.14342/5975
https://doi.org/10.1103/PhysRevD.111.L091101
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Physical Review D, 2025. Vol. 111, L091101
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
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score 15,812429

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