An analysis of the Λpp system produced forward in the reaction Kp → Λpp at 18.5 GeV/c is presented. The data come from an experiment using the CERN Ω′ spectrometer. Structures are observed in the Λp mass spectrum and in the double moments HLMlm describing the decay of the Λp system and the subsequent Λ decay, for L ≤ 8. A partial wave analysis interprets these structures as resonances of spin parities 2- and 3+, masses and widths M = 2200 ± 40 MeV, Γ = 150 ± 30 MeV and M = 2330 ± 40 MeV, Γ = 150 ± 30 MeV respectively.
Evidence for resonant structures in the system / T. Armstrong, M. Baubillier, I. Bloodworth, M. Bonesini, J. Brient, A. Burns, E. Calligarich, J. Carney, G. Cecchet, G. Costa, R. Dolfini, G. Evangelista, B. Ghidini, J. Kinson, K. Knudson, V. Lenti, L. Mandelli, F. Navach, A. Palano, L. Perini, Y. Pons, E. Quercigh, Z. Strachman, M. Tamborini, G. Zito, R. Zitoun. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - 227:3(1983), pp. 365-386. [10.1016/0550-3213(83)90564-3]
Evidence for resonant structures in the system
L. Perini;
1983
Abstract
An analysis of the Λpp system produced forward in the reaction Kp → Λpp at 18.5 GeV/c is presented. The data come from an experiment using the CERN Ω′ spectrometer. Structures are observed in the Λp mass spectrum and in the double moments HLMlm describing the decay of the Λp system and the subsequent Λ decay, for L ≤ 8. A partial wave analysis interprets these structures as resonances of spin parities 2- and 3+, masses and widths M = 2200 ± 40 MeV, Γ = 150 ± 30 MeV and M = 2330 ± 40 MeV, Γ = 150 ± 30 MeV respectively.Pubblicazioni consigliate
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