NNLO global parton analysis

被引：353

作者：

Martin, AD

Roberts, RG

Stirling, WJ

Thorne, RS ^{[1
]}

机构：

[1] Univ Durham, Dept Phys, Durham DH1 3LE, England

[2] Univ Durham, Inst Particle Phys Phenomenol, Durham DH1 3LE, England

[3] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

[4] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

PHYSICS LETTERS B | 2002年 / 531卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(02)01483-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We perform a NNLO (and a LO) global parton analysis in which we include the new precise data for deep inelastic scattering from HERA and for inclusive jet production at the Tevatron, together with the improved knowledge of the three-loop splitting functions. The results are compared with our recent NLO analyses. The LO fit produces significantly worse results in general, but gives a surprisingly good fit to the Tevatron high-E-T jet data. For the approximate NNLO analysis we notice a slight improvement in the quality of the global fit, and find that the partons are changed by up to 10% at Q(2) = 10 GeV2, in particular in the x < 0.01 regime. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：216 / 224

页数：9

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