Single-spin Azimuthal Asymmetries in the ``Reduced Twist-3 Approximation''

Abstract

We consider the single-spin azimuthal asymmetries recently measured at the HERMES experiment for charged pions produced in semi-inclusive deep inelastic scattering of leptons off longitudinally polarized protons. Guided by the experimental results and assuming a vanishing twist-2 transverse quark spin distribution in the longitudinally polarized nucleon, denoted as ``reduced twist-3 approximation'', a self-consistent description of the observed single-spin asymmetries is obtained. In addition, predictions are given for the z dependence of the single target-spin asymmetry.

8 pages, 2 figures, typos corrected, very small changes to text, reference added

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Cited by in corpus (42)

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• Measurement of single-spin azimuthal asymmetries in semi-inclusive electroproduction of pions and kaons on a longitudinally polarised deuterium target
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• Collins effect in semi-inclusive deeply inelastic scattering and in electron positron annihilation
• Pretzelosity distribution function h_1T^perp and the single spin asymmetry A_UT^sin(3phi-phi_S)
• Sivers function in light-cone quark model and azimuthal spin asymmetries in pion electroproduction
• Estimate of the Collins fragmentation function in a chiral invariant approach
• Sivers effect in Drell Yan at RHIC
• Semi-Inclusive Deep Inelastic Scattering in Wandzura-Wilczek-type approximation
• Azimuthal asymmetry in electro-production of neutral pions in SIDIS
• Are there approximate relations among transverse momentum dependent distribution functions?
• Azimuthal Spin Asymmetries of Pion Electroproduction
• Light-cone divergence in twist-3 correlation functions
• Transversity distribution function in hard scattering of polarized protons and antiprotons in the PAX experiment
• Sivers vs. Collins effect in azimuthal single spin asymmetries in pion production in SIDIS
• Reanalysis of Azimuthal Spin Asymmetries of Meson Electroproduction
• Transverse-momentum dependent parton distribution functions beyond leading twist in quark models
• The twist-three distribution $e^q(x,k_{\perp })$ in a light-front model
• On Unique Predictions for Single Spin Azimuthal Asymmetry
• Twist-3 Single-Spin Asymmetries in Semi-Inclusive Deep-Inelastic Scattering
• Investigation of single spin asymmetries in pi^{+} electroproduction
• Azimuthal single spin asymmetries in SIDIS in the light of chiral symmetry breaking
• Transversity and intrinsic motion of the constituents
• Collins effect and single spin azimuthal asymmetries in the HERMES and COMPASS experiments
• Soft-Gluon-Pole Contribution in Single Transverse-Spin Asymmetries of Drell-Yan Processes
• Partonic State and Single Transverse Spin Asymmetry in Drell-Yan Process
• Single Transverse Spin Asymmetries at Parton Level
• Probing the transverse spin of quarks in deep inelastic scattering
• Recent progress in the understanding of single spin asymmetries
• Partonic State and Single Transverse Spin Asymmetries in Semi Inclusive DIS
• Single Target-Spin Asymmetry in Semi-Inclusive Deep Inelastic Scattering on Transversely Polarized Nucleon Target
• Hermes and the spin of the proton
• Collinear Factorization for Single Transverse-Spin Asymmetry in Drell-Yan Processes
• Spin Orbit Correlations and the Structure of the Nucleon
• Q^2 dependence of azimuthal asymmetries in semi-inclusive deep inelastic scattering and in Drell-Yan
• Recent developments in nucleon spin structure with focus on h_{1L}^{\perp} and pretzelosity h_{1T}^\perp
• Status of Spin Physics - Experimental Summary
• Sivers effect in semi-inclusive DIS and in the Drell-Yan process
• Perturbative contribution to the sin(phi) asymmetry in inclusive pi^{+} electroproduction