First observation of the doubly charmed baryon Xi(+)(cc).
By The Selex Collaboration, M. Mattson, et al. 2002
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We observe a signal for the doubly charmed baryon Xi(+)(cc) in the charged decay mode Xi(+)(cc)-->Lambda(+)(c)K-pi(+) in data from SELEX, the charm hadroproduction experiment at Fermilab. We observe an excess of 15.9 events over an expected background of 6.1+/-0.5 events, a statistical significance of 6.3sigma. The observed mass of this state is 3519+/-1 MeV/c(2). The Gaussian mass width of this state is 3 MeV/c(2), consistent with resolution; its lifetime is less than 33 fs at 90% confidence.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/5047a2f29b986de981214e582aa106c55c006459
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In Nuclear and High Energy Physics
Citations in the corpus
- Physics case for an LHCb Upgrade II - Opportunities in flavour physics, and beyond, in the HL-LHC era (2018, background): “Prompt production at LHC remains the best hope for unambiguously establishing the existence of stable, weakly decaying bbud tetraquark predicted by both lattice QCD and phenomenological models, which accurately predicted the mass of the recently detected Ξ++ cc baryon [262].”
- Nonstandard heavy mesons and baryons: Experimental evidence (2017, methodology): “0 MeV that was reported by the SELEX experiment (176; 177) but was not confirmed by other experiisospin multiplets with precision that is better, in some”
- Pentaquark and Tetraquark States (2019, methodology): “14 MeV [36].”
- Charmed bottom baryon spectroscopy from lattice QCD (2014, background): “The discovery of the Ξcc was reported by the SELEX collaboration [13, 14], but subsequent searches for this state by the FOCUS [15], BaBar [16], Belle [17], and LHCb collaborations [18] returned negative results.”