A highly significant structure is observed in the Lambda K-+(c)-pi(+)pi(+) mass spectrum, where the Lambda(+)(c) baryon is reconstructed in the decay mode pK(-)pi(+). The structure is consistent with originating from a weakly decaying particle, identified as the doubly charmed baryon Xi(++)(cc). The difference between the masses of the Xi(++)(cc) and Lambda(+)(c) states is measured to be 1334.94 +/- 0.72(stat.) +/- 0.27(syst.) MeV/c(2), and the Xi(++)(cc) mass is then determined to be 3621.40 +/- 0.72(stat.) +/- 0.27(syst.) +/- 0.14(Lambda(+)(c)) MeV/c(2), where the last uncertainty is due to the limited knowledge of the Lambda(+)(c) mass. The state is observed in a sample of proton-proton collision data collected by the LHCb experiment at ...
A highly significant structure is observed in the \u39bc+K-\u3c0+\u3c0+ mass spectrum, where the \u3...
A highly significant structure is observed in the Λ+cK−π+π+ mass spectrum, where the Λ+c baryon is r...
The doubly charmed baryon decay Ξ + + c c → Ξ + c π + is observed for the first time, with a statist...
A highly significant structure is observed in the Lambda K-+(c)-pi(+)pi(+) mass spectrum, where the ...
A highly significant structure is observed in the Lambda K-+(c)-pi(+)pi(+) mass spectrum, where the ...
A highly significant structure is observed in the Lambda K-+(c)-pi(+)pi(+) mass spectrum, where the ...
A highly significant structure is observed in the Lambda K-+(c)-pi(+)pi(+) mass spectrum, where the ...
A highly significant structure is observed in the Lambda K-+(c)-pi(+)pi(+) mass spectrum, where the ...
A highly significant structure is observed in the $\Lambda^+_c K^-\pi^+\pi^+$ mass spectrum, where t...
A highly significant structure is observed in the Λ_{c}^{+}K^{-}π^{+}π^{+} mass spectrum, where the ...
A highly significant structure is observed in the Λc+K-π+π+ mass spectrum, where the Λc+ baryon is r...
A highly significant structure is observed in the Λc+ K− π+ π+ mass spectrum, where the Λc+ baryon i...
A highly significant structure is observed in the Λc+K-π+π+ mass spectrum, where the Λc+ baryon is r...
A highly significant structure is observed in the Λc+ K− π+ π+ mass spectrum, where the Λc+ baryon i...
A highly significant structure is observed in the Λc+K-π+π+ mass spectrum, where the Λc+ baryon is r...
A highly significant structure is observed in the \u39bc+K-\u3c0+\u3c0+ mass spectrum, where the \u3...
A highly significant structure is observed in the Λ+cK−π+π+ mass spectrum, where the Λ+c baryon is r...
The doubly charmed baryon decay Ξ + + c c → Ξ + c π + is observed for the first time, with a statist...
A highly significant structure is observed in the Lambda K-+(c)-pi(+)pi(+) mass spectrum, where the ...
A highly significant structure is observed in the Lambda K-+(c)-pi(+)pi(+) mass spectrum, where the ...
A highly significant structure is observed in the Lambda K-+(c)-pi(+)pi(+) mass spectrum, where the ...
A highly significant structure is observed in the Lambda K-+(c)-pi(+)pi(+) mass spectrum, where the ...
A highly significant structure is observed in the Lambda K-+(c)-pi(+)pi(+) mass spectrum, where the ...
A highly significant structure is observed in the $\Lambda^+_c K^-\pi^+\pi^+$ mass spectrum, where t...
A highly significant structure is observed in the Λ_{c}^{+}K^{-}π^{+}π^{+} mass spectrum, where the ...
A highly significant structure is observed in the Λc+K-π+π+ mass spectrum, where the Λc+ baryon is r...
A highly significant structure is observed in the Λc+ K− π+ π+ mass spectrum, where the Λc+ baryon i...
A highly significant structure is observed in the Λc+K-π+π+ mass spectrum, where the Λc+ baryon is r...
A highly significant structure is observed in the Λc+ K− π+ π+ mass spectrum, where the Λc+ baryon i...
A highly significant structure is observed in the Λc+K-π+π+ mass spectrum, where the Λc+ baryon is r...
A highly significant structure is observed in the \u39bc+K-\u3c0+\u3c0+ mass spectrum, where the \u3...
A highly significant structure is observed in the Λ+cK−π+π+ mass spectrum, where the Λ+c baryon is r...
The doubly charmed baryon decay Ξ + + c c → Ξ + c π + is observed for the first time, with a statist...