Study of excited Λ0b states decaying to Λ0b π+π- in proton-proton collisions at √s = 13 TeV
dc.contributor.author | Sirunyan, A. M. | pt_BR |
dc.contributor.author | Silveira, Gustavo Gil da | pt_BR |
dc.contributor.author | CMS Collaboration | pt_BR |
dc.date.accessioned | 2020-07-10T03:42:31Z | pt_BR |
dc.date.issued | 2020 | pt_BR |
dc.identifier.issn | 0370-2693 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/211743 | pt_BR |
dc.description.abstract | A 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.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physics letters. B. Amsterdam. Vol. 803 (Apr. 2020), 135345, 22 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Aceleradores de partículas | pt_BR |
dc.subject | CMS | en |
dc.subject | Physics | en |
dc.subject | Colisões proton-proton | pt_BR |
dc.subject | Beauty baryon | en |
dc.subject | Heavy baryon | en |
dc.subject | Heavy flavor | en |
dc.subject | Flavor spectroscopy | en |
dc.subject | Experimental results | en |
dc.title | Study of excited Λ0b states decaying to Λ0b π+π- in proton-proton collisions at √s = 13 TeV | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001115044 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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