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Observation of a Narrow Pentaquark State, 𝑃𝑐⁒(4312)+, and of the Two-Peak Structure of the 𝑃𝑐⁒(4450)+

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dc.contributor.authorAaij, R.
dc.contributor.authorAbellΓ‘n Beteta, C.
dc.contributor.authorAdeva, B.
dc.contributor.authorAdinolfi, M.
dc.contributor.authorFernΓ‘ndez RamΓ­rez, CΓ©sar
dc.contributor.authoret al. (LHCb Collaboration)
dc.date.accessioned2024-12-03T13:01:53Z
dc.date.available2024-12-03T13:01:53Z
dc.date.issued2019-06-05
dc.descriptionThe registered version of this article, first published in β€œPhysical Review Letters, 122(4)222001", is available online at the publisher's website: American Physical Society, https://doi.org/10.1103/PhysRevLett.122.222001
dc.descriptionLa versiΓ³n registrada de este artΓ­culo, publicado por primera vez en β€œPhysical Review Letters, 122(4)222001", estΓ‘ disponible en lΓ­nea en el sitio web del editor: American Physical Society, https://doi.org/10.1103/PhysRevLett.122.222001
dc.description.abstractA narrow pentaquark state, 𝑃𝑐⁒(4312)+, decaying to 𝐽/πœ“β’π‘, is discovered with a statistical significance of 7.3⁒𝜎 in a data sample of Ξ›0𝑏→𝐽/πœ“β’π‘β’πΎβˆ’ decays, which is an order of magnitude larger than that previously analyzed by the LHCb Collaboration. The 𝑃𝑐⁒(4450)+ pentaquark structure formerly reported by LHCb is confirmed and observed to consist of two narrow overlapping peaks, 𝑃𝑐⁒(4440)+ and 𝑃𝑐⁒(4457)+, where the statistical significance of this two-peak interpretation is 5.4⁒𝜎. The proximity of the Ξ£+𝑐⁒¯𝐷0 and Ξ£+𝑐⁒¯𝐷*0 thresholds to the observed narrow peaks suggests that they play an important role in the dynamics of these statesen
dc.description.versionversiΓ³n publicada
dc.identifier.citationAaij, R., AbellΓ‘n Beteta, C., Adeva, B., Adinolfi, M., Aidala, C. A., Ajaltouni, Z., Akar, S., Albicocco, P., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, FernΓ‘ndez RamΓ­rez, CΓ©sar, et al. (2019). Observation of a Narrow Pentaquark State, Pc (4312)+, and of the Two-Peak Structure of the Pc (4450)+. Physical Review Letters, 122(22), 222001. https://doi.org/10.1103/PhysRevLett.122.222001
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.122.222001
dc.identifier.issn1079-7114, 0031-9007
dc.identifier.urihttps://hdl.handle.net/20.500.14468/24674
dc.journal.issue4
dc.journal.titlePhysical Review Letters
dc.journal.volume122
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.centerFacultades y escuelas::Facultad de Ciencias
dc.relation.departmentFΓ­sica Interdisciplinar
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.es
dc.titleObservation of a Narrow Pentaquark State, 𝑃𝑐⁒(4312)+, and of the Two-Peak Structure of the 𝑃𝑐⁒(4450)+en
dc.typeartΓ­culoes
dc.typejournal articleen
dspace.entity.typePublication
relation.isAuthorOfPublication66882618-d034-433a-bfcf-670b00bc6adf
relation.isAuthorOfPublication.latestForDiscovery66882618-d034-433a-bfcf-670b00bc6adf
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