M. Alvioli(1), L. Frankfurt(2,3), V. Guzey(4), M. Strikman(3), M. Zhalov(4), 2018, Color fluctuation phenomena in gamma-A collisions at the LHC, PHOTON 2017, pp. 151–156, Ginevra, 22-26 Maggio 2017,
URL: http://www.cnr.it/prodotto/i/396829

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 ( -meson photoproduction) and in the hard regime (J/ 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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