Genuine twist 3 in exclusive electroproduction of transversely polarized vector mesons

被引：30

作者：

Anikin, IV ^{[1
]}

Teryaev, OV

机构：

[1] Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia

[2] Ecole Polytech, CPhT, Unite Mixte C7644, CNRS, F-91128 Palaiseau, France

来源：

PHYSICS LETTERS B | 2003年 / 554卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(02)03195-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the detailed analysis of genuine twist-3 contributions to the exclusive electroproduction amplitude of transversely polarized vector mesons. Using the formalism based on the QCD factorization in the momentum representation we calculated all the genuine twist-3 terms and found the total expression of this amplitude at 1/Q level. Generally speaking, these terms violate standard factorization owing to the existence of the infrared divergencies in the amplitude of hard sub-processes, although the strongest divergencies cancel due to the QCD equations of motion. We discuss the possible treatment of surviving divergencies. (C) 2003 Published by Elsevier Science B.V.

引用

页码：51 / 63

页数：13

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