Parton densities and structure functions beyond the next-to-leading order

被引：2

作者：

van Neerven, WL ^{[1
]}

Vogt, A ^{[1
]}

机构：

[1] Leiden Univ, Inst Lorentz, NL-2300 RA Leiden, Netherlands

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2000年 / 89卷

关键词：

D O I：

10.1016/S0920-5632(00)00836-7

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 discuss recent results on the evolution of unpolarized parton densities and structure functions in massless perturbative QCD. Present partial results on the next-to-next-to-leading order (NNLO) evolution kernels prove sufficient for reliable calculations at not too small values of the Bjorken variable, x>10(-3). One order more can be taken into account at x greater than or equal to0.2. Inclusion of these terms considerably reduces the main theoretical uncertainties of determinations of alpha (s) (to about 1% at the Z-mass) and the parton densities from structure functions.

引用

页码：143 / 148

页数：6

共 27 条

[1] Determination of the anomalous dimension of gluonic operators in deep inelastic scattering at O(1/Nf)
Bennett, JF
Gracey, JA
[J]. NUCLEAR PHYSICS B, 1998, 517 (1-3) : 241 - 268
[2] The evolution of unpolarized singlet structure functions at small x
Blumlein, J
Vogt, A
[J]. PHYSICAL REVIEW D, 1998, 58 (01) : 26
[3] On the behaviour of non-singlet structure functions at small x
Blumlein, J
Vogt, A
[J]. PHYSICS LETTERS B, 1996, 370 (1-2) : 149 - 155
[4] Blümlein J, 1998, DIS 98, 6TH INTERNATIONAL WORKSHOP ON DEEP INELASTIC SCATTERING AND QCD, P211
[5] Review of Particle Physics
[J]. The European Physical Journal C - Particles and Fields, 1998, 3 (1-4) : 1 - 783
[6] HIGH-ENERGY FACTORIZATION AND SMALL-X DEEP-INELASTIC SCATTERING BEYOND LEADING ORDER
CATANI, S
HAUTMANN, F
[J]. NUCLEAR PHYSICS B, 1994, 427 (03) : 475 - 524
[7] RESUMMATION OF THE QCD PERTURBATIVE SERIES FOR HARD PROCESSES
CATANI, S
TRENTADUE, L
[J]. NUCLEAR PHYSICS B, 1989, 327 (02) : 323 - 352
[8] BFKL pomeron in the next-to-leading approximation
Fadin, VS
Lipatov, LN
[J]. PHYSICS LETTERS B, 1998, 429 (1-2) : 127 - 134
[9] LEPTON-HADRON PROCESSES BEYOND LEADING ORDER IN QUANTUM CHROMODYNAMICS
FURMANSKI, W
PETRONZIO, R
[J]. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1982, 11 (04): : 293 - 314
[10] 2ND-ORDER CONTRIBUTIONS TO THE STRUCTURE FUNCTIONS IN DEEP INELASTIC-SCATTERING .1. THEORETICAL CALCULATIONS
GONZALEZARROYO, A
LOPEZ, C
YNDURAIN, FJ
[J]. NUCLEAR PHYSICS B, 1979, 153 (1-2) : 161 - 186

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