Abstract
We present results on transverse momentum (p_{mathrm {textsc {t}}}) and rapidity (y) differential production cross sections, mean transverse momentum and mean transverse momentum square of inclusive mathrm {J}/psi and psi mathrm {(2S)} at forward rapidity (2.5<y<4) as well as psi mathrm {(2S)}-to-mathrm {J}/psi cross section ratios. These quantities are measured in pp collisions at center of mass energies sqrt{s},=5.02 and 13 TeV with the ALICE detector. Both charmonium states are reconstructed in the dimuon decay channel, using the muon spectrometer. A comprehensive comparison to inclusive charmonium cross sections measured at sqrt{s},=2.76, 7 and 8 TeV is performed. A comparison to non-relativistic quantum chromodynamics and fixed-order next-to-leading logarithm calculations, which describe prompt and non-prompt charmonium production respectively, is also presented. A good description of the data is obtained over the full p_{mathrm {textsc {t}}} range, provided that both contributions are summed. In particular, it is found that for p_{mathrm {textsc {t}}}>15 GeV/c the non-prompt contribution reaches up to 50% of the total charmonium yield.
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More From: The European physical journal. C, Particles and fields
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