Inclusive photoproduction of J/psi mesons in proton-lead collisions at the LHC can likely be separated from hadronic background using centrality, rapidity-gap, and forward-neutron veto selections, extending the measurable transverse-momentum range to about 20 GeV.
Charmonia production in hadron colliders and the extraction of colour-octet matrix elements
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abstract
We present the results of our analysis on charmonia ($J/\psi$ and $\psi'$) hadroproduction taking into account higher-order QCD effects induced by initial-state radiation in a Monte Carlo framework, with the colour-octet mechanism implemented in the event generation. We find that those colour-octet matrix elements extracted so far from Fermilab Tevatron data for both $J/\psi$ and $\psi'$ production have to be lowered significantly. We finally make predictions for charmonia production at the LHC, presenting a code for a fast simulation with PYTHIA based on the colour-octet model.
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Inclusive photoproduction of vector quarkonium in ultra-peripheral collisions at the LHC
Inclusive photoproduction of J/psi mesons in proton-lead collisions at the LHC can likely be separated from hadronic background using centrality, rapidity-gap, and forward-neutron veto selections, extending the measurable transverse-momentum range to about 20 GeV.