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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/186407
Study of the D 0 p amplitude in Λ b 0 → D 0 pπ - decays
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An amplitude analysis of the decay Λ b 0 → D 0 pπ - is performed in the part of the phase space containing resonances in the D 0 p channel. The study is based on a data sample corresponding to an integrated luminosity of 3.0 fb-1 of pp collisions recorded by the LHCb experiment. The spectrum of excited Λ c + states that decay into D 0 p is studied. The masses, widths and quantum numbers of the Λc(2880)+ and Λc(2940)+ resonances are measured. The constraints on the spin and parity for the Λc(2940)+ state are obtained for the first time. A near-threshold enhancement in the D 0 p amplitude is investigated and found to be consistent with a new resonance, denoted the Λc(2860)+, of spin 3 /2 and positive parity.
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LHCb Collaboration, et al. Study of the D 0 p amplitude in Λ b 0 → D 0 pπ - decays. Journal of High Energy Physics. 2017. Vol. 2017, num. 30, pags. 1-43. ISSN 1126-6708. [consulted: 8 of June of 2026]. Available at: https://hdl.handle.net/2445/186407