Abstract
We point out that the s-channel unitarity of QCD imposes meaningful constraints on a possible form of the QCD Reggeon Field Theory. We show that neither the BFKL nor JIMWLK nor Braun’s Hamiltonian satisfy the said constraints. In a toy, zero transverse dimensional case we construct a model that satisfies the analogous constraint and show that at infinite energy it indeed tends to a “black disk limit” as opposed to the model with triple Pomeron vertex only, routinely used as a toy model in the literature.
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Kovner, A., Levin, E. & Lublinsky, M. QCD unitarity constraints on Reggeon Field Theory. J. High Energ. Phys. 2016, 31 (2016). https://doi.org/10.1007/JHEP08(2016)031
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DOI: https://doi.org/10.1007/JHEP08(2016)031