Measurement of ${\Xi }_{cc}^{++}$ production in $pp$ collisions at $\sqrt{s}=13$ TeV

Abstract

The production of ${\Xi }_{cc}^{++}$ baryons in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}=13$ TeV is measured in the transverse-momentum range $4<p_{\mathrm{T}}<15\mathrm{GeV}$/$c$ and the rapidity range $2.0<y<4.5$. The data used in this measurement correspond to an integrated luminosity of 1.7 ${\mathrm{fb}}^{-1}$, recorded by the LHCb experiment during 2016. The ratio of the ${\Xi }_{cc}^{++}$ production cross-section times the branching fraction of the ${\Xi }_{cc}^{++}\to {\Lambda }_c^{+}{K}^{-}{\pi }^{+}{\pi }^{+}$ decay relative to the prompt ${\Lambda }_c^{+}$ production cross-section is found to be $(2.22\pm 0.27\pm 0.29)\times 10^{-4}$, assuming the central value of the measured ${\Xi }_{cc}^{++}$ lifetime, where the first uncertainty is statistical and the second systematic.

arXiv commentAll figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-035.html

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