Observation of sizeable ω contribution to χ c1ð3872Þ → π + π − J=ψ decays

Resonant structures in the dipion mass spectrum from χc1ð3872Þ → πþπ−J=ψ decays, produced via Bþ → Kþχc1ð3872Þ decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. A sizeable contribution from the isospin conse...

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Autores: Garcia Moreno, Paula, Garrido Beltrán, Lluís, Gironella Gironell, Pere, Gomez Fernandez, Sergio, Graugés Pous, Eugeni, Lobo Salvia, Aniol, Marin Benito, Carla, Mauricio Ferre, Joan, Vazquez Gomez, Ricardo, Alfonso Albero, Alejandro, LHCb Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/221786
Acceso en línea:https://hdl.handle.net/2445/221786
Access Level:acceso abierto
Palabra clave:Quarks
Hadrons
Mesons (Física nuclear)
Mesons (Nuclear physics)
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spelling Observation of sizeable ω contribution to χ c1ð3872Þ → π + π − J=ψ decaysGarcia Moreno, PaulaGarrido Beltrán, LluísGironella Gironell, PereGomez Fernandez, SergioGraugés Pous, EugeniLobo Salvia, AniolMarin Benito, CarlaMauricio Ferre, JoanVazquez Gomez, RicardoAlfonso Albero, AlejandroLHCb CollaborationQuarksHadronsMesons (Física nuclear)QuarksHadronsMesons (Nuclear physics)Resonant structures in the dipion mass spectrum from χc1ð3872Þ → πþπ−J=ψ decays, produced via Bþ → Kþχc1ð3872Þ decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. A sizeable contribution from the isospin conserving χc1ð3872Þ → ωJ=ψ decay is established for the first time, ð21.4 2.3 2.0Þ%, with a significance of more than 7.1σ. The amplitude of isospin violating decay, χc1ð3872Þ → ρ0J=ψ, relative to isospin conserving decay, χc1ð3872Þ → ωJ=ψ, is properly determined, and it is a factor of 6 larger than expected for a pure charmonium state.American Physical Society2025202520232025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion12 p.application/pdfhttps://hdl.handle.net/2445/221786Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1103/PhysRevD.108.L011103Physical Review D, 2023, vol. 108, num.L011103https://doi.org/10.1103/PhysRevD.108.L011103(c) American Physical Society, 2023info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2217862026-05-29T05:05:01Z
dc.title.none.fl_str_mv Observation of sizeable ω contribution to χ c1ð3872Þ → π + π − J=ψ decays
title Observation of sizeable ω contribution to χ c1ð3872Þ → π + π − J=ψ decays
spellingShingle Observation of sizeable ω contribution to χ c1ð3872Þ → π + π − J=ψ decays
Garcia Moreno, Paula
Quarks
Hadrons
Mesons (Física nuclear)
Quarks
Hadrons
Mesons (Nuclear physics)
title_short Observation of sizeable ω contribution to χ c1ð3872Þ → π + π − J=ψ decays
title_full Observation of sizeable ω contribution to χ c1ð3872Þ → π + π − J=ψ decays
title_fullStr Observation of sizeable ω contribution to χ c1ð3872Þ → π + π − J=ψ decays
title_full_unstemmed Observation of sizeable ω contribution to χ c1ð3872Þ → π + π − J=ψ decays
title_sort Observation of sizeable ω contribution to χ c1ð3872Þ → π + π − J=ψ decays
dc.creator.none.fl_str_mv Garcia Moreno, Paula
Garrido Beltrán, Lluís
Gironella Gironell, Pere
Gomez Fernandez, Sergio
Graugés Pous, Eugeni
Lobo Salvia, Aniol
Marin Benito, Carla
Mauricio Ferre, Joan
Vazquez Gomez, Ricardo
Alfonso Albero, Alejandro
LHCb Collaboration
author Garcia Moreno, Paula
author_facet Garcia Moreno, Paula
Garrido Beltrán, Lluís
Gironella Gironell, Pere
Gomez Fernandez, Sergio
Graugés Pous, Eugeni
Lobo Salvia, Aniol
Marin Benito, Carla
Mauricio Ferre, Joan
Vazquez Gomez, Ricardo
Alfonso Albero, Alejandro
LHCb Collaboration
author_role author
author2 Garrido Beltrán, Lluís
Gironella Gironell, Pere
Gomez Fernandez, Sergio
Graugés Pous, Eugeni
Lobo Salvia, Aniol
Marin Benito, Carla
Mauricio Ferre, Joan
Vazquez Gomez, Ricardo
Alfonso Albero, Alejandro
LHCb Collaboration
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Quarks
Hadrons
Mesons (Física nuclear)
Quarks
Hadrons
Mesons (Nuclear physics)
topic Quarks
Hadrons
Mesons (Física nuclear)
Quarks
Hadrons
Mesons (Nuclear physics)
description Resonant structures in the dipion mass spectrum from χc1ð3872Þ → πþπ−J=ψ decays, produced via Bþ → Kþχc1ð3872Þ decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. A sizeable contribution from the isospin conserving χc1ð3872Þ → ωJ=ψ decay is established for the first time, ð21.4 2.3 2.0Þ%, with a significance of more than 7.1σ. The amplitude of isospin violating decay, χc1ð3872Þ → ρ0J=ψ, relative to isospin conserving decay, χc1ð3872Þ → ωJ=ψ, is properly determined, and it is a factor of 6 larger than expected for a pure charmonium state.
publishDate 2023
dc.date.none.fl_str_mv 2023
2025
2025
2025
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 https://hdl.handle.net/2445/221786
url https://hdl.handle.net/2445/221786
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.108.L011103
Physical Review D, 2023, vol. 108, num.L011103
https://doi.org/10.1103/PhysRevD.108.L011103
dc.rights.none.fl_str_mv (c) American Physical Society, 2023
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2023
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 12 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 Articles publicats en revistes (Física Quàntica i Astrofísica)
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 15,811543

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