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Article

Measurement of Ξ++cc production in pp collisions at √s=13 TeV

Chinese Physics C. 2020. Vol. 44. No. 2. P. 022001.

The production of Ξ++cc baryons in proton-proton collisions at a centre-of-mass energy of s√=13 TeV is measured in the transverse-momentum range 4<pT<15 GeV/c and the rapidity range 2.0<y<4.5. The data used in this measurement correspond to an integrated luminosity of 1.7 fb−1, recorded by the LHCb experiment during 2016. The ratio of the Ξ++cc production cross-section times the branching fraction of the Ξ++cc→Λ+cK−π+π+ decay relative to the prompt Λ+c production cross-section is found to be (2.22±0.27±0.29)×10−4, assuming the central value of the measured Ξ++cc lifetime, where the first uncertainty is statistical and the second systematic.