On the Triple Pomeron Vertex in Perturbative QCD

Details On the Triple Pomeron Vertex in Perturbative QCD On the Triple Pomeron Vertex in Perturbative QCD

2002-07-14

arxiv.org/abs/hep-ph/0207173v1

Eur.Phys.J.C27:101-113,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, 4 figures

Scientific paper

10.1140/epjc/s2002-01089-x

We estimate the size of the triple Pomeron vertex in perturbative QCD and compare with the phenomenological value extracted from Regge fits to experimental data. For simplicity, the results of the QCD analysis are taken in the large-N_c limit. We find that the perturbative triple Pomeron coupling is of the same order of magnitude as the observed one. We also estimate the size of the Pomeron self energy and its contribution to the renormalization of the Pomeron intercept. The effect is very small, in agreement with previous nonperturbative estimates.

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