Measurements of charmed meson and antimeson production asymmetries at √s=13.6 TeV

A bstract This article presents doubly differential measurements of the asymmetries in production rates between mesons containing a charm quark and those containing an anti-charm quark in proton-proton collisions at a centre-of-mass energy of √s=13.6 s = 13.6 TeV using data recorded by the LHCb experiment. The asymmetries of D 0 , D + and Dₛ⁺ D s + mesons are measured for two-dimensional intervals in transverse momentum and pseudorapidity, within the range 2 . 5 < p T < 25 . 0 GeV/ c and 2 . 0 < η < 4 . 5. No significant production asymmetries are observed. Comparisons to the P ythia 8 and Herwig 7 event generators are also presented, and their agreement with the data is evaluated. These measurements constitute the first measurements of production asymmetries at this centre-of-mass energy of colliding beams, and the first measurements with the LHCb Run 3 detector.