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On the triple-Pomeron vertex in perturbative QCD

  • Theoretical Physics
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Abstract.

We estimate the size of the triple-pomeron vertex in perturbative QCD and compare with the phenomenological value extracted from Regge fits to the experimental data. For simplicity, the results of the QCD analysis are taken in the large-Nc 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 non-perturbative estimates.

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Authors and Affiliations

  1. II. Institut für Theoretische Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany , , , , , , DE

    J. Bartels

  2. St. Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg 188300, Russia , , , , , , RU

    M.G. Ryskin

  3. Dipartimento di Fisica, Università di Bologna and Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, via Irnerio 46, 40126 Bologna, Italy , , , , , , IT

    G.P. Vacca

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  1. J. Bartels
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  2. M.G. Ryskin
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  3. G.P. Vacca
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Received: 9 October 2002 / Published online: 20 December 2002

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Bartels, J., Ryskin, M. & Vacca, G. On the triple-Pomeron vertex in perturbative QCD. Eur. Phys. J. C 27, 101–113 (2003). https://doi.org/10.1140/epjc/s2002-01089-x

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  • DOI: https://doi.org/10.1140/epjc/s2002-01089-x

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