Abstract
Within QCD reggeon field theory we study the formation of two subsequent triple pomeron vertices in the process P→PP→PPP. We make use of an earlier investigation [1] of the six-reggeon amplitude in deep inelastic scattering and show that in the large-N c limit pomeron fan diagrams emerge with the same triple pomeron vertex in all places. We thus confirm the BK-equation, but we also find additional terms related to the reggeization of the gluon, and we discuss their potential significance. Our analysis also includes the general pomeron → two odderon vertex: a particular version of this vertex has been included into earlier generalizations the BK equation.
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Bartels, J., Braun, M.A. Pomeron fan diagrams in perturbative QCD. J. High Energ. Phys. 2018, 95 (2018). https://doi.org/10.1007/JHEP06(2018)095
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DOI: https://doi.org/10.1007/JHEP06(2018)095