QCD Sum Rule Calculation of Twist-3 Contributions to Polarized Nucleon Structure Functions

Abstract

Using the framework of QCD sum rules we predict the twist-3 contribution to the second moment of the polarized nucleon structure function $g_2(x)$. As the relevant local operator depends explicitely on the gluon field, we employ a recently studied interpolating nucleon current which contains three quark field and one gluon field operator. Despite the fact that our calculation is based on the analysis of a completely different correlation function, our estimates are consitent with those of Balitsky, Braun and Kolesnichenko who used a three-quark current.

16pp. , 2 figures (uuencoded eps-files), LateX. Some misprints corrected, results unchanged

References in corpus (6)

• 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
• Q^2-Dependence of the Proton's G_1 Structure Function Sum Rule
• Improved QCD sum rule estimates of the higher twist contributions to polarised and unpolarised nucleon structure functions
• OPE analysis for polarized deep inelastic scattering
• The connection between single transverse spin asymmetries and the second moment of $g_2$

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• Iterative Monte Carlo analysis of spin-dependent parton distributions
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• SPIN-DEPENDENT NUCLEAR STRUCTURE FUNCTIONS: GENERAL APPROACH WITH APPLICATION TO THE DEUTERON
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• Measurement of Inclusive Spin Structure Functions of the Deuteron
• Renormalons at the boundaries between perturbative and non-perturbative QCD
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• Calculations of Higher Twist Distribution Functions in the MIT Bag Model
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• A Precision Measurement of the Neutron Twist-3 Matrix Element $d_2^n$: Probing Color Forces
• Properties of nucleon in nuclear matter: once more
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• Scalar and vector self-energies of heavy baryons in nuclear medium
• F/D Ratios in Hyperon Beta Decays and Spin Distribution in the Nucleon
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• A QCD Analysis of Polarised Parton Densities
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• Estimates of higher-dimensional vacuum condensates from the instanton vacuum
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• Modifications on nucleon parameters at finite temperature