2023/11/19 by Bierlich, Christian, Wilkinson, Jeremy, Sun, Jiayin +3 · 1 citation
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.2311.11426
Open charm production in proton-proton collisions represents an important tool to investigate some of the most fundamental aspects of Quantum Chromodynamics, from the partonic mechanisms of heavy-quark production to the process of heavy-quark hadronisation. Over the last decade, the measurement of the production cross sections of charm mesons and baryons in proton-proton (pp) collisions was at the centre of a wide experimental effort at the Large Hadron Collider. Thanks to the complementarity of the different experiments, the production of charm hadrons was measured over a wide transverse momentum region and in different rapidity ranges. In this paper, the measurements of the charm hadrons D0, D^*, D+, Ds+, Λc+ and Ξc0 performed by the ALICE, CMS and LHCb collaborations in pp collisions at the centre-of-mass energy √(s)=\rm 5.02~TeV are combined to determine the total charm-quark production cross section σ_cc in a novel data-driven approach. The resulting total cc cross section is \beginaligned σ_\mathrmcc (pp,5.02 TeV) = amp; 8340.9 ± 217.8 (stat.) +367.1-367.2 (syst.) +362.5-457.5 (extr.) + 679.9 (Ωc)~μb. \endaligned The measured charm-hadron distributions and corresponding cross sections are compared with the most recent theoretical calculations.