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Non-Singlet QCD Analysis of the Structure Function F_2 in 3-Loops

High Energy Physics - Phenomenology 2009-11-10 v2 High Energy Physics - Experiment
Authors: J. Blümlein , H. Böttcher , A. Guffanti
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Abstract

First results of a non--singlet QCD analysis of the structure function F2(x,Q2)F_2(x,Q^2) in 3--loop order based on the non--singlet world data are presented. Correlated errors are determined and their propagation through the evolution equations is performed analytically. The value for αs(MZ)\alpha_s(M_Z) is determined to be 0.1135+/−0.0023/0.00260.1135 +/- 0.0023/0.0026 compatible with results from other QCD analyses. Low moments for uv(x)u_v(x), dv(x)d_v(x) and uv(x)−dv(x)u_v(x) - d_v(x) with correlated errors are calculated which may be compared with results from lattice simulations.

Keywords

proton structure qcd coupling constant perturbative qcd evolution

Cite

@article{arxiv.hep-ph/0407089,
  title  = {Non-Singlet QCD Analysis of the Structure Function F_2 in 3-Loops},
  author = {J. Blümlein and H. Böttcher and A. Guffanti},
  journal= {arXiv preprint arXiv:hep-ph/0407089},
  year   = {2009}
}

Comments

1 Latex file, 1 style file, 2 figures Current World average on alpha_s added

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R2 v1 2026-07-22T13:55:52.112Z