Target mass corrections and higher twist effects in polarized deep-inelastic scattering

Abstract

We perform a next-to-leading-order QCD analysis to world data on polarized structure functions $g_1$ and $g_2$ in a fixed-flavor number scheme. We include target mass corrections and higher twist effects in our fitting procedure and study their non-negligible effects on physically interesting quantities. Twist-3 contributions to both polarized structure functions are determined, and the accuracy of the extracted polarized parton distribution functions is improved. ${}^3\mathrm{He}$ and ${}^3\mathrm{H}$ polarized structure functions are described based on our fit result. Moreover, sum rules are derived and compared with available theoretical and experimental results.

14 pages, 13 figures, 8 tables

References in corpus (13)

• Parton distributions for the LHC
• Extraction of Spin-Dependent Parton Densities and Their Uncertainties
• The Deuteron Spin-dependent Structure Function g1d and its First Moment
• Global Analysis of Helicity Parton Densities and Their Uncertainties
• Spin Structure of the Nucleon - Status and Recent Results
• QCD Analysis of the Polarized World Data
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• Impact of CLAS and COMPASS data on Polarized Parton Densities and Higher Twist
• Higher twist parton distributions from light-cone wave functions
• The Jacobi Polynomials QCD analysis for the polarized structure function
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Cited by in corpus (4)

• Where do we stand with a 3-D picture of the proton?
• Study of spin-dependent structure functions of ${}^3\mathrm{He}$ and ${}^3\mathrm{H}$ at NNLO approximation and corresponding nuclear corrections
• QCD analysis of structure functions in deep inelastic neutrino-nucleon scattering without using the orthogonal polynomials approach
• Nucleon spin structure functions, considering target mass correction and higher twist effects at the NNLO accuracy and their transverse momentum dependence