Coherent photon-hadron interactions in pA collisions: Small-x physics after HERA

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

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5 pages, 3 figures. Version to be published in Physical Review C

Scientific paper

10.1103/PhysRevC.73.044902

In this letter we study the photoproduction of heavy quarks and vector mesons in the coherent proton-nucleus (pA) interactions for RHIC and LHC energies and analyze if these processes can be used to determine the QCD dynamics at high energies. The integrated cross section and rapidity distribution are estimated using the Color Glass Condensate (CGC) formalism. A comparison with the linear dynamics predictions is also presented. Our results indicate that the nonlinear dynamics can be proven in those reactions, which are well suited for studing saturation effects.

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