QCD evolution and skewedness effects in color dipole description of DVCS

被引：15
|
作者：
Favart, L
Machado, MVT
机构：
[1] Free Univ Brussels, IIHE, B-1050 Brussels, Belgium
[2] Univ Fed Pelotas, Inst Fis & Matemat, BR-96010090 Pelotas, RS, Brazil
[3] Univ Fed Rio Grande do Sul, GFPAE, High Energy Phys Phenomenol Grp, BR-91501970 Porto Alegre, RS, Brazil
[4] CERN, Div Theory, CH-1211 Geneva 23, Switzerland
来源：
EUROPEAN PHYSICAL JOURNAL C | 2004年 / 34卷 / 04期
关键词：
D O I：
10.1140/epjc/s2004-01733-5
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 show the role played by QCD evolution and skewedness effects in the DVCS cross section at large Q(2) within the color dipole description of the process at photon level. The dipole cross section is given by the saturation model, which can be improved by DGLAP evolution at high photon virtualities. We investigate both possibilities as well as the off-forward effect through a simple phenomenological parameterization. The results are compared to the recent ZEUS DVCS data.
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页码：429 / 433
页数：5
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