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arXiv · 1605.03251

QCD unitarity constraints on Reggeon Field Theory

Alex Kovner·Eugene Levin·Michael Lublinsky
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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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Alex Kovner, Eugene Levin, Michael Lublinsky. 2016-05-11. QCD unitarity constraints on Reggeon Field Theory. https://doi.org/10.1007/jhep08(2016)031

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