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arxiv: 1404.6101 · v1 · pith:X23WURVBnew · submitted 2014-04-24 · ✦ hep-ph · hep-ex

Comparison of psi(2S) and J/psi photoproduction cross sections in Pb-Pb ultraperipheral collisions at the LHC

classification ✦ hep-ph hep-ex
keywords crossnuclearsectionsleadingpb-pbphotoproductionshadowingapproach
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Within the leading logarithmic approximation of perturbative QCD and the leading twist approach to nuclear shadowing, we compare the cross sections of photoproduction of $J/\psi$ and $\psi(2S)$ mesons on nuclei in Pb-Pb UPCs in the LHC kinematics. We find that the nuclear suppression of these cross sections due to the nuclear gluon shadowing is large and rather similar in the $J/\psi$ and $\psi(2S)$ cases.

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