Observation of New Xi(0)(c) Baryons Decaying to Lambda K-+(c)-

The Λ+cK− mass spectrum is studied with a data sample of pp collisions at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6  fb−1 collected by the LHCb experiment. Three Ξ0c states are observed with a large significance and their masses and natural widths are measure...

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Authors: Alfonso Albero, Alejandro, Calvo Gómez, Míriam, Camboni, Alessandro, Coquereau, Samuel, Garrido Beltrán, Lluís, Gascón Fora, David, Gironella Gironell, Pere, Golobardes, Elisabet, Graciani Díaz, Ricardo, Graugés Pous, Eugeni, Manera Escalero, R., Vázquez Gómez, Ricard, Vilasis-Cardona, Xavier, LHCb Collaboration
Format: article
Status:Published version
Publication Date:2020
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/175173
Online Access:https://hdl.handle.net/2445/175173
Access Level:Open access
Keyword:Barions
Gran Col·lisionador d'Hadrons
Baryons
Large Hadron Collider (France and Switzerland)
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spelling Observation of New Xi(0)(c) Baryons Decaying to Lambda K-+(c)-Alfonso Albero, AlejandroCalvo Gómez, MíriamCamboni, AlessandroCoquereau, SamuelGarrido Beltrán, LluísGascón Fora, DavidGironella Gironell, PereGolobardes, ElisabetGraciani Díaz, RicardoGraugés Pous, EugeniManera Escalero, R.Vázquez Gómez, RicardVilasis-Cardona, XavierLHCb CollaborationBarionsGran Col·lisionador d'HadronsBaryonsLarge Hadron Collider (France and Switzerland)The Λ+cK− mass spectrum is studied with a data sample of pp collisions at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6  fb−1 collected by the LHCb experiment. Three Ξ0c states are observed with a large significance and their masses and natural widths are measured to be m[Ξc(2923)0]=2923.04±0.25±0.20±0.14  MeV, Γ[Ξc(2923)0]=7.1±0.8±1.8  MeV, m[Ξc(2939)0]=2938.55±0.21±0.17±0.14  MeV, Γ[Ξc(2939)0]=10.2±0.8±1.1  MeV, m[Ξc(2965)0]=2964.88±0.26±0.14±0.14  MeV, Γ[Ξc(2965)0]=14.1±0.9±1.3  MeV, where the uncertainties are statistical, systematic, and due to the limited knowledge of the Λ+c mass. The Ξc(2923)0 and Ξc(2939)0 baryons are new states. The Ξc(2965)0 state is in the vicinity of the known Ξc(2970)0 baryon; however, their masses and natural widths differ significantly.American Physical Society2021202120202021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion11 p.application/pdfapplication/pdfhttps://hdl.handle.net/2445/175173Articles 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/PhysRevLett.124.222001Physical Review Letters, 2020, vol. 124, num. 22, p. 222001https://doi.org/10.1103/PhysRevLett.124.222001cc-by Aaij, R. et al., 2020http://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1751732026-05-29T05:05:01Z
dc.title.none.fl_str_mv Observation of New Xi(0)(c) Baryons Decaying to Lambda K-+(c)-
title Observation of New Xi(0)(c) Baryons Decaying to Lambda K-+(c)-
spellingShingle Observation of New Xi(0)(c) Baryons Decaying to Lambda K-+(c)-
Alfonso Albero, Alejandro
Barions
Gran Col·lisionador d'Hadrons
Baryons
Large Hadron Collider (France and Switzerland)
title_short Observation of New Xi(0)(c) Baryons Decaying to Lambda K-+(c)-
title_full Observation of New Xi(0)(c) Baryons Decaying to Lambda K-+(c)-
title_fullStr Observation of New Xi(0)(c) Baryons Decaying to Lambda K-+(c)-
title_full_unstemmed Observation of New Xi(0)(c) Baryons Decaying to Lambda K-+(c)-
title_sort Observation of New Xi(0)(c) Baryons Decaying to Lambda K-+(c)-
dc.creator.none.fl_str_mv Alfonso Albero, Alejandro
Calvo Gómez, Míriam
Camboni, Alessandro
Coquereau, Samuel
Garrido Beltrán, Lluís
Gascón Fora, David
Gironella Gironell, Pere
Golobardes, Elisabet
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Manera Escalero, R.
Vázquez Gómez, Ricard
Vilasis-Cardona, Xavier
LHCb Collaboration
author Alfonso Albero, Alejandro
author_facet Alfonso Albero, Alejandro
Calvo Gómez, Míriam
Camboni, Alessandro
Coquereau, Samuel
Garrido Beltrán, Lluís
Gascón Fora, David
Gironella Gironell, Pere
Golobardes, Elisabet
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Manera Escalero, R.
Vázquez Gómez, Ricard
Vilasis-Cardona, Xavier
LHCb Collaboration
author_role author
author2 Calvo Gómez, Míriam
Camboni, Alessandro
Coquereau, Samuel
Garrido Beltrán, Lluís
Gascón Fora, David
Gironella Gironell, Pere
Golobardes, Elisabet
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Manera Escalero, R.
Vázquez Gómez, Ricard
Vilasis-Cardona, Xavier
LHCb Collaboration
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Barions
Gran Col·lisionador d'Hadrons
Baryons
Large Hadron Collider (France and Switzerland)
topic Barions
Gran Col·lisionador d'Hadrons
Baryons
Large Hadron Collider (France and Switzerland)
description The Λ+cK− mass spectrum is studied with a data sample of pp collisions at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6  fb−1 collected by the LHCb experiment. Three Ξ0c states are observed with a large significance and their masses and natural widths are measured to be m[Ξc(2923)0]=2923.04±0.25±0.20±0.14  MeV, Γ[Ξc(2923)0]=7.1±0.8±1.8  MeV, m[Ξc(2939)0]=2938.55±0.21±0.17±0.14  MeV, Γ[Ξc(2939)0]=10.2±0.8±1.1  MeV, m[Ξc(2965)0]=2964.88±0.26±0.14±0.14  MeV, Γ[Ξc(2965)0]=14.1±0.9±1.3  MeV, where the uncertainties are statistical, systematic, and due to the limited knowledge of the Λ+c mass. The Ξc(2923)0 and Ξc(2939)0 baryons are new states. The Ξc(2965)0 state is in the vicinity of the known Ξc(2970)0 baryon; however, their masses and natural widths differ significantly.
publishDate 2020
dc.date.none.fl_str_mv 2020
2021
2021
2021
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/2445/175173
url https://hdl.handle.net/2445/175173
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/PhysRevLett.124.222001
Physical Review Letters, 2020, vol. 124, num. 22, p. 222001
https://doi.org/10.1103/PhysRevLett.124.222001
dc.rights.none.fl_str_mv cc-by Aaij, R. et al., 2020
http://creativecommons.org/licenses/by/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by Aaij, R. et al., 2020
http://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 11 p.
application/pdf
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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