Energy dependence of forward-rapidity $$\mathrm {J}/\psi $$ and $$\psi \mathrm {(2S)}$$ production in pp collisions at the LHC
We present results on transverse momentum (pT) and rapidity (y) differential production cross sections, mean transverse momentum and mean transverse momentum square of inclusive J/ψ and ψ(2S) at forward rapidity (2.5 < y < 4) as well as ψ(2S)-to-J/ψ cross section ratios. These quantities are measured in pp collisions at center of mass energies √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 √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 pT range, provided that both contributions are summed. In particular, it is found that for pT > 15 GeV/c the non-prompt contribution reaches up to 50% of the total charmonium yield.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
- Contributing Organization:
- ALCE Collaboration
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1379878
- Journal Information:
- European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Journal Issue: 6 Vol. 77; ISSN 1434-6044
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
| In-medium charmonium production in proton-nucleus collisions 
 | journal | March 2019 | 
| Inclusive J/ψ production at forward and backward rapidity in p-Pb collisions at s N N = 8.16 $$ \sqrt{s_{\mathrm{NN}}}=8.16 $$ TeV 
 | journal | July 2018 | 
| Role of multiparton interactions on J / ψ production in p + p collisions at LHC energies 
 | journal | May 2018 | 
| In-Medium Charmonium Production in Proton-Nucleus Collisions | text | January 2018 | 
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