Interplay of Reggeon and photon in pA collisions

We discuss the effects of the electromagnetic interaction in high-energy proton collisions with nuclei of large Z at strong coupling $\lambda=g^2N_c$. Using the holographic dual limit of large $N_c>\lambda\gg 1$, we describe the Reggeon exchange as a twisted surface and show that it gets essentially modified by the electromagnetic interaction.

Comments: 19 pages, 4 figures

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Affiliations: 1Department of Physics, Lomonosov Moscow State University, 2Department of Physics, Lomonosov Moscow State University, 3Department of Physics, Lomonosov Moscow State University, 4Department of Physics, Lomonosov Moscow State University, 5Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University

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