QCD unitarity constraints on Reggeon Field Theory

Alex Kovner, Eugene Levin, Michael Lublinsky

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Article number31
JournalJournal of High Energy Physics
Issue number8
StatePublished - 1 Aug 2016


  • Perturbative QCD
  • Resummation


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