On the twist-3 contribution to h_L in the instanton vacuum

Abstract

We show that the instanton model of the QCD vacuum indicates the parametric smallness of the twist-3 contributions to the polarized structure function h_L. This smallness is related to the diluteness of the QCD instanton vacuum.

arXiv comment6 pages, no figures

References in corpus (10)

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• The theory and phenomenology of polarized deep inelastic scattering
• Hadronic matrix elements of gluon operators in the instanton vacuum
• Measurement of the Proton and Deuteron Spin Structure Functions g2 and Asymmetry A2
• Transverse Spin Distribution Function of Nucleon in Chiral Theory
• Measuring transverse spin correlations by 4-particle correlations in $e^{+}{e}^{-}\to 2\mathrm{jets}$
• Q^2-Evolution of Nucleon's Chiral-Odd Twist-3 Structure Function: h_L(x,Q^2)
• Higher-twist quark-mass contributions to deep-inelastic scattering
• Bag Model Prediction for the Nucleon's Chiral-odd Twist-3 Distribution h_L(x,Q^2) at High Q^2

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• Parton distribution functions beyond leading twist from lattice QCD: The $h_L(x)$ case
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• Transverse structure of the pion beyond leading twist with basis light-front quantization
• Collins effect and single spin azimuthal asymmetries in the HERMES and COMPASS experiments
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• Lorentz invariance relations and Wandzura-Wilczek approximation
• Spin Orbit Correlations and the Structure of the Nucleon
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• Parton model description of quark and antiquark correlators and TMDs
• Recent developments in nucleon spin structure with focus on h_{1L}^{\perp} and pretzelosity h_{1T}^\perp