Geometric scaling for the total γ*p cross section in the low x region

被引：510

作者：

Stasto, AM

Golec-Biernat, K

Kwiecinski, J

机构：

[1] Ist Nazl Fis Nucl, Sezione Firenze, I-50125 Florence, Italy

[2] H Niewodniczanski Inst Nucl Phys, Dept Theoret Phys, PL-31342 Krakow, Poland

[3] Univ Hamburg, Inst Theoret Phys 2, D-22761 Hamburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.86.596

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We observe that the saturation model of deep inelastic scattering predicts a geometric scaling of the total gamma *p cross section in the region of small Bjorken variable x. The geometric scaling in this case means that the cross section is a function of only one dimensionless variable tau = Q(2)R(0)(2)(x), where the function R-0(x) decreases with decreasing x. We show that the experimental data from HERA in the region x < 0.01 confirm the expectations of this scaling over a very broad region of Q(2). We suggest that the geometric scaling is more general than the saturation model.

引用

页码：596 / 599

页数：4

共 84 条

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