Svtudy of charmonium production via the decay to p p at √s=13 TeV

Charmonium production cross-section in protonpvroton collisions is measured at the centre-of-mass energy root s = 13 TeV using decays to pp final state. The study is performed using a data sample corresponding to an integrated luminosity of 2.2 fb(-1) collected in 2018 with the LHCb detector. The production cross-section of the h(c) meson is measured in a rapidity range of 2.0 < y < 4.0 and in a transverse momentum range of 5.0 < p(T) < 20.0GeV/c, which is extended compared with previous LHCb analyses. The differential cross-section is measured in bins of pT and, for the first time, of y. Upper limits, at 90% and 95% confidence levels, on the h(c)(2S) and h(c)(1P) prompt production cross-sections are determined for the first time.