Observation of a new excited beauty strange baryon decaying to Ξ−bπ+π−
CMS Collaboration: et al.
| Autores: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/260392 |
| Acceso en línea: | http://hdl.handle.net/10261/260392 |
| Access Level: | acceso abierto |
| Palabra clave: | ddc:530 |
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Observation of a new excited beauty strange baryon decaying to Ξ−bπ+π−CMS CollaborationBrochero Cifuentes, J. A.Cabrillo, I. J.Calderon, AliciaChazin Quero, B.Duarte Campderros, J.Fernández-García, MarcosFernández-Madrazo, CeliaFernández Manteca, P. J.García Alonso, A.Gómez, GervasioMartínez-Rivero, CelsoMartínez Ruiz del Arbol, P.Matorras, FranciscoMatorras-Cuevas, PabloPiedra, JonatanPrieels, C.Ricci-Tam, F.Rodrigo Anoro, TeresaRuiz Jimeno, AlbertoScodellaro, LucaTrevisani, N.Vila, IvánVizán, J.ddc:530CMS Collaboration: et al.The Ξ−bπ+π− invariant mass spectrum is investigated with an event sample of proton-proton collisions at √s=13TeV, collected by the CMS experiment at the LHC in 2016–2018 and corresponding to an integrated luminosity of 140fb−1. The ground state Ξ−b is reconstructed via its decays to J/ψΞ− and J/ψΛK−. A narrow resonance, labeled Ξb(6100)−, is observed at a Ξ−bπ+π− invariant mass of 6100.3±0.2(stat)±0.1(syst)±0.6(Ξ−b) MeV, where the last uncertainty reflects the precision of the Ξ−b baryon mass. The upper limit on the Ξb(6100)− natural width is determined to be 1.9 MeV at 95% confidence level. The low Ξb(6100)− signal yield observed in data does not allow a measurement of the quantum numbers of the new state. However, following analogies with the established excited Ξc baryon states, the new Ξb(6100)− resonance and its decay sequence are consistent with the orbitally excited Ξ−b baryon, with spin and parity quantum numbers JP=3/2−.Funded by SCOAP3.Individuals have received support from the Marie Curie program and the European Research Council and Horizon 2020 Grant, Contracts No. 675440, No. 724704, No. 752730, and No. 765710 (European Union); CERN; the Programa Estatal de Fomento de la Investigación Científica y Tecnica de Excelencia María de Maeztu, Grant No. MDM-2015-0509 and the Programa Severo Ochoa del Principado de Asturias.Peer reviewedAmerican Physical SocietySCOAPPrincipado de AsturiasEuropean CommissionMinisterio de Economía y Competitividad (España)European Research CouncilCERNConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202220222021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/260392reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1103/PhysRevLett.126.252003Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2603922026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
Observation of a new excited beauty strange baryon decaying to Ξ−bπ+π− |
| title |
Observation of a new excited beauty strange baryon decaying to Ξ−bπ+π− |
| spellingShingle |
Observation of a new excited beauty strange baryon decaying to Ξ−bπ+π− CMS Collaboration ddc:530 |
| title_short |
Observation of a new excited beauty strange baryon decaying to Ξ−bπ+π− |
| title_full |
Observation of a new excited beauty strange baryon decaying to Ξ−bπ+π− |
| title_fullStr |
Observation of a new excited beauty strange baryon decaying to Ξ−bπ+π− |
| title_full_unstemmed |
Observation of a new excited beauty strange baryon decaying to Ξ−bπ+π− |
| title_sort |
Observation of a new excited beauty strange baryon decaying to Ξ−bπ+π− |
| dc.creator.none.fl_str_mv |
CMS Collaboration Brochero Cifuentes, J. A. Cabrillo, I. J. Calderon, Alicia Chazin Quero, B. Duarte Campderros, J. Fernández-García, Marcos Fernández-Madrazo, Celia Fernández Manteca, P. J. García Alonso, A. Gómez, Gervasio Martínez-Rivero, Celso Martínez Ruiz del Arbol, P. Matorras, Francisco Matorras-Cuevas, Pablo Piedra, Jonatan Prieels, C. Ricci-Tam, F. Rodrigo Anoro, Teresa Ruiz Jimeno, Alberto Scodellaro, Luca Trevisani, N. Vila, Iván Vizán, J. |
| author |
CMS Collaboration |
| author_facet |
CMS Collaboration Brochero Cifuentes, J. A. Cabrillo, I. J. Calderon, Alicia Chazin Quero, B. Duarte Campderros, J. Fernández-García, Marcos Fernández-Madrazo, Celia Fernández Manteca, P. J. García Alonso, A. Gómez, Gervasio Martínez-Rivero, Celso Martínez Ruiz del Arbol, P. Matorras, Francisco Matorras-Cuevas, Pablo Piedra, Jonatan Prieels, C. Ricci-Tam, F. Rodrigo Anoro, Teresa Ruiz Jimeno, Alberto Scodellaro, Luca Trevisani, N. Vila, Iván Vizán, J. |
| author_role |
author |
| author2 |
Brochero Cifuentes, J. A. Cabrillo, I. J. Calderon, Alicia Chazin Quero, B. Duarte Campderros, J. Fernández-García, Marcos Fernández-Madrazo, Celia Fernández Manteca, P. J. García Alonso, A. Gómez, Gervasio Martínez-Rivero, Celso Martínez Ruiz del Arbol, P. Matorras, Francisco Matorras-Cuevas, Pablo Piedra, Jonatan Prieels, C. Ricci-Tam, F. Rodrigo Anoro, Teresa Ruiz Jimeno, Alberto Scodellaro, Luca Trevisani, N. Vila, Iván Vizán, J. |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
SCOAP Principado de Asturias European Commission Ministerio de Economía y Competitividad (España) European Research Council CERN Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
ddc:530 |
| topic |
ddc:530 |
| description |
CMS Collaboration: et al. |
| publishDate |
2021 |
| dc.date.none.fl_str_mv |
2021 2022 2022 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
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article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/260392 |
| url |
http://hdl.handle.net/10261/260392 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
https://doi.org/10.1103/PhysRevLett.126.252003 Sí |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.publisher.none.fl_str_mv |
American Physical Society |
| publisher.none.fl_str_mv |
American Physical Society |
| dc.source.none.fl_str_mv |
reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
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Consejo Superior de Investigaciones Científicas (CSIC) |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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1869422098016894976 |
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15.811543 |