The soft pomeron and non-perturbative corrections in quark-quark scattering

被引：5

作者：

Korchemskaya, IA

机构：

[1] Institute for Theoretical Physics, State Univ. of New York at Stony B., Stony Brook

[2] Universitá di Parma and INFN, Gruppo Collegato di Parma

[3] Lab. de Phys. Theor. et Haute E., Université de Paris XI, Centre d'Orsay

来源：

NUCLEAR PHYSICS B | 1997年 / 490卷 / 1-2期

关键词：

soft gluons; Wilson loop; cross singularities of Wilson loop; infrared renormalon; soft pomeron;

D O I：

10.1016/S0550-3213(96)00681-5

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 consider elastic quark-quark scattering at high energy with fixed momentum transfer t and perform factorization of soft-gluon exchanges into a vacuum expectation value of Wilson lines, Taking into account non-perturbative corrections whose structure is predicted from an infrared renormalon analysis, we represent the scattering amplitude as an asymptotic series. In the region of small momentum transfer, where the non-perturbative corrections are dominant, the scattering amplitude is a Gaussian distribution in t with a slope depending on a non-perturbative scale. A non-perturbative origin of the soft pomeron is thus identified. (C) 1997 Elsevier Science B.V.

引用

页码：306 / 328

页数：23

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