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The evolution of unpolarized singlet structure functions at small x

被引：115
作者：
Blumlein, J
Vogt, A
机构：
[1] DESY, D-15735 Zeuthen, Germany
[2] Univ Wurzburg, Inst Theoret Phys, D-97074 Wurzburg, Germany
来源：
PHYSICAL REVIEW D | 1998年 / 58卷 / 01期
关键词：
D O I：
10.1103/PhysRevD.58.014020
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A systematic study is performed of the impact of the various resummed small-x contributions to the anomalous dimensions and coefficient functions on the evolution of unpolarized structure functions in deep-inelastic scattering. The proton structure functions F-2(p) and F-L(p) as well as the photon structure function F-2(gamma) are considered together with the corresponding parton densities. The general analytic solution of the evolution equations in Mellin-N space is derived, and different approximate solutions are compared. Potential effects of less singular small-x terms in the anomalous dimension and coefficient functions are discussed. [S0556-2821(98)02413-8].
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页数：26
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