Charmonium production cross-section in proton– proton collisions is measured at the centre-of-mass energy √s = 13 TeV using decays to p p¯ 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 ηc meson is measured in a rapidity range of 2.0 < y < 4.0 and in a transverse momentum range of 5.0 < pT < 20.0 GeV/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 ηc(2S) and hc(1P) prompt production cross-sections are determined for the first time.
Study of charmonium production via the decay to $$p\bar{p}$$ at $$\sqrt{s} = 13\,\textrm{TeV}$$
De Angelis, C.;Dettori, F.;Fabiano, F.;Manca, G.;Oldeman, R.;Saitta, B.;
2024-01-01
Abstract
Charmonium production cross-section in proton– proton collisions is measured at the centre-of-mass energy √s = 13 TeV using decays to p p¯ 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 ηc meson is measured in a rapidity range of 2.0 < y < 4.0 and in a transverse momentum range of 5.0 < pT < 20.0 GeV/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 ηc(2S) and hc(1P) prompt production cross-sections are determined for the first time.File | Dimensione | Formato | |
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