Overview of the spin structure function g1 at arbitrary x and Q2

被引：27

作者：

Ermolaev, B. I. ^{[1
]}

Greco, M. ^{[2
,3
]}

Troyan, S. I. ^{[4
]}

机构：

[1] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[2] Univ Roma Tre, Dipartmento Fis, Rome, Italy

[3] Univ Roma Tre, Ist Nazl Fis Nucl, Rome, Italy

[4] St Petersburg Inst Nucl Phys, Gatchina 188300, Russia

来源：

RIVISTA DEL NUOVO CIMENTO | 2010年 / 33卷 / 02期

关键词：

SINGLET STRUCTURE FUNCTIONS; EVOLUTION; RESUMMATION; SCATTERING; BEHAVIOR; NUCLEON; ORDER; FITS;

D O I：

10.1393/ncr/i2010-10052-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In the present paper we summarize our results on the structure function g(1) and present explicit expressions for the non-singlet and singlet components of g(1) which can be used at arbitrary x and Q(2). These expressions combine the well-known DGLAP results for the anomalous dimensions and coefficient functions with the total resummation of the leading logarithmic contributions and the shift of Q(2) -> Q(2) + mu(2), with mu/Lambda(QCD) approximate to 10 (approximate to 55) for the non-singlet (singlet) components of g(1) respectively. in contrast to DGLAP, these expressions do not require the introduction of singular parameterizations for the initial parton densities. We also apply our results to describe the experimental data in the kinematic regions beyond the reach of DGLAP.

引用

页码：57 / 122

页数：66

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