Target Mass Corrections to QCD Bjorken Sum Rule for Nucleon Spin Structure Functions

Abstract

We discuss the possible target mass corrections in the QCD analysis of nucleon's spin-dependent structure functions measured in the polarized deep-inelastic leptoproduction. The target mass correction for the QCD Bjorken sum rule is obtained from the Nachtmann moment and its magnitude is estimated employing positivity bound as well as the experimental data for the asymmetry parameters. We also study the uncertainty due to target mass effects in determining the QCD effective coupling constant ${\alpha }_s(Q^2)$ from the Bjorken sum rule. The target mass effect for the Ellis-Jaffe sum rule is also briefly discussed.

9 pages, LaTeX, 1 figure (.ps files) appended after \end{document} as an uuencoded compressed tar file

References in corpus (5)

• Measurement of the Spin-Dependent Structure Function $g_1(x)$ of the Proton
• Determination of ${\alpha }_s$ and the Nucleon Spin Decomposition Using Recent Polarized Structure Function Data
• ERRATUM TO: Power corrections $1/Q^2$ to parton sum rules for deep inelastic scattering from polarized targets
• Spin Asymmetry in Muon--Proton Deep Inelastic Scattering on a Transversely-Polarized Target
• Target Mass Effects in QCD Bjorken Sum Rule

Cited by in corpus (1)

• Parton model sum rules