Two narrow resonant states are observed in the Λb0K-π+ mass spectrum using a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of 6 fb-1. The minimal quark content of the Λb0K-π+ system indicates that these are excited Ξb0 baryons. The masses of the Ξb(6327)0 and Ξb(6333)0 states are m[Ξb(6327)0]=6327.28-0.21+0.23±0.12±0.24 and m[Ξb(6333)0]=6332.69-0.18+0.17±0.03±0.22 MeV, respectively, with a mass splitting of Δm=5.41-0.27+0.26±0.12 MeV, where the uncertainties are statistical, systematic, and due to the Λb0 mass measurement. The measured natural widths of these states are consistent with zero, with upper limits of Γ[Ξb(6327)0]<2.2...
The Λc+K- mass spectrum is studied with a data sample of pp collisions at a center-of-mass energy of...
We report the observation of a new structure in the Λb0π+π- spectrum using the full LHCb data set of...
We report the observation of a new structure in the Λ0 bπþπ− spectrum using the full LHCb data set ...
Two narrow resonant states are observed in the Λb0K-π+ mass spectrum using a data sample of proton-p...
Two narrow resonant states are observed in the Λb0 K− π+ mass spectrum using a data sample of proto...
Two narrow resonant states are observed in the Λ0bK−π+ mass spectrum using a data sample of proton-p...
Two narrow resonant states are observed in the Λ0bK−π+ mass spectrum using a data sample of proton-p...
: Two narrow resonant states are observed in the Λ_{b}^{0}K^{-}π^{+} mass spectrum using a data samp...
The Λc+K- mass spectrum is studied with a data sample of pp collisions at a center-of-mass energy of...
We report the observation of a new structure in the Λb0π+π- spectrum using the full LHCb data set of...
We report the observation of a new structure in the Λ0 bπþπ− spectrum using the full LHCb data set ...
Two narrow resonant states are observed in the Λb0K-π+ mass spectrum using a data sample of proton-p...
Two narrow resonant states are observed in the Λb0 K− π+ mass spectrum using a data sample of proto...
Two narrow resonant states are observed in the Λ0bK−π+ mass spectrum using a data sample of proton-p...
Two narrow resonant states are observed in the Λ0bK−π+ mass spectrum using a data sample of proton-p...
: Two narrow resonant states are observed in the Λ_{b}^{0}K^{-}π^{+} mass spectrum using a data samp...
The Λc+K- mass spectrum is studied with a data sample of pp collisions at a center-of-mass energy of...
We report the observation of a new structure in the Λb0π+π- spectrum using the full LHCb data set of...
We report the observation of a new structure in the Λ0 bπþπ− spectrum using the full LHCb data set ...