Color fluctuation phenomena in gamma A collisions at the LHC
DOI:
https://doi.org/10.23727/CERN-Proceedings-2018-001.151Keywords:
CERN report, contribution, photon - nucleus interactionsAbstract
We explain that color fluctuations (CFs) in the light-cone photon wave function lead to much stronger shadowing in the coherent production both in the soft regime ($\rho$ -meson photoproduction) and in the hard regime($J/\psi$ photoproduction). We make CF based predictions for the distribution over the number of wounded nucleons $\nu$ in the inelastic photon--nucleus scattering. We show that CFs lead to a dramatic enhancement of this distribution at $\nu=1$ and large $\nu > 10$.
Our predictions can be tested in proton--nucleus and nucleus--nucleus ultraperipheral collisions.
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Published
2018-12-20
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Section
Photon-hadron collisions at hadron colliders
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