Measurement of the production cross-section of J/ψ and ψ(2S) mesons in pp collisions at s=13 TeV with the ATLAS detector.

Measurements of the differential production cross-sections of prompt and non-prompt J / ψ and ψ (2 S) mesons with transverse momenta between 8 and 360 GeV and rapidity in the range | y | < 2 are reported. Furthermore, measurements of the non-prompt fractions of J / ψ and ψ (2 S) , and the prompt and non-prompt ψ (2 S) -to- J / ψ production ratios, are presented. The analysis is performed using 140 fb - 1 of s = 13 TeV pp collision data recorded by the ATLAS detector at the LHC during the years 2015–2018. [ABSTRACT FROM AUTHOR]