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Study of excited Λ0b states decaying to Λ0b π+π- in proton-proton collisions at √s = 13 TeV

dc.contributor.authorSirunyan, A. M.pt_BR
dc.contributor.authorSilveira, Gustavo Gil dapt_BR
dc.contributor.authorCMS Collaborationpt_BR
dc.date.accessioned2020-07-10T03:42:31Zpt_BR
dc.date.issued2020pt_BR
dc.identifier.issn0370-2693pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/211743pt_BR
dc.description.abstractA study of excited Λ0b baryons is reported, based on a data sample collected in 2016–2018 with the CMS detector at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of up to 140fb¯1. The existence of four excited Λ0b states: Λ0b (5912)0, Λ0b (5920)0, Λ0b (6146)0 and Λ0b (6152)0 in the Λ0bπ+π- mass spectrum is confirmed, and their masses are measured. The Λ0bπ+π- mass distribution exhibits a broad excess of events in the region of 6040–6100 MeV, whose origin cannot be discerned with the present data.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysics letters. B. Amsterdam. Vol. 803 (Apr. 2020), 135345, 22 p.pt_BR
dc.rightsOpen Accessen
dc.subjectAceleradores de partículaspt_BR
dc.subjectCMSen
dc.subjectPhysicsen
dc.subjectColisões proton-protonpt_BR
dc.subjectBeauty baryonen
dc.subjectHeavy baryonen
dc.subjectHeavy flavoren
dc.subjectFlavor spectroscopyen
dc.subjectExperimental resultsen
dc.titleStudy of excited Λ0b states decaying to Λ0b π+π- in proton-proton collisions at √s = 13 TeVpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001115044pt_BR
dc.type.originEstrangeiropt_BR


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