Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nucleon dissociation and incoherent $J/\psi$ photoproduction on nuclei
  in ion ultraperipheral collisions at the CERN Large Hadron Collider   Using the general notion of cross section fluctuations in hadron--nucleus
scattering at high energies, we derive an expression for the cross section of
incoherent $J/\psi$ photoproduction on heavy nuclei $d\sigma_{\gamma A \to
J/\psi Y}/dt$, which includes both elastic $d\sigma_{\gamma p \to J/\psi p}/dt$
and proton-dissociation $d\sigma_{\gamma p \to J/\psi Y}/dt$ photoproduction on
target nucleons. We find that with good accuracy, $d\sigma_{\gamma A \to J/\psi
Y}/dt$ can be expressed as a product of the sum of the $d\sigma_{\gamma p \to
J/\psi p}/dt$ and $d\sigma_{\gamma p \to J/\psi Y}/dt$ cross sections, which
have been measured at HERA, and the common nuclear shadowing factor, which is
calculated using the leading twist nuclear shadowing model. Our prediction for
the cross section of incoherent $J/\psi$ photoproduction in Pb-Pb UPCs at
$\sqrt{s_{NN}}=2.76$ TeV and $y=0$, $d\sigma_{AA \to J/\psi
AY}(y=0)/dy=0.59-1.24$ mb, agrees within significant theoretical uncertainties
with the data of the ALICE collaboration.

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The categories of this paper are: atom-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: plasm-ph
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The categories of this paper are: cs
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The categories of this paper are: q-bio
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The categories of this paper are: q-alg
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The categories of this paper are: quant-ph
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The categories of this paper are: alg-geom