On the triple-Pomeron vertex in perturbative QCD

被引：34
|
作者：
Bartels, J
Ryskin, MG
Vacca, GP
机构：
[1] Univ Hamburg, Inst Theoret Phys 2, D-22761 Hamburg, Germany
[2] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy
[3] Ist Nazl Fis Nucl, Sezione Bologna, I-40126 Bologna, Italy
[4] St Petersburg Nucl Phys Inst, St Petersburg 188300, Russia
来源：
EUROPEAN PHYSICAL JOURNAL C | 2003年 / 27卷 / 01期
关键词：
D O I：
10.1140/epjc/s2002-01089-x
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
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-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 non-perturbative estimates.
引用
收藏
页码：101 / 113
页数：13
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