Azimuthal asymmetries at CLAS: Extraction of e^a(x) and prediction of A_{UL}

Abstract

First information on the chirally odd twist-3 proton distribution function e(x) is extracted from the azimuthal asymmetry, A_{LU}, in the electro-production of pions from deeply inelastic scattering of longitudinally polarized electrons off unpolarized protons, which has been recently measured by CLAS collaboration. Furthermore parameter-free predictions are made for azimuthal asymmetries, A_{UL}, from scattering of an unpolarized beam on a polarized proton target for CLAS kinematics.

9 pages, 5 figures, latex

References in corpus (5)

• Estimate of the Collins fragmentation function in a chiral invariant approach
• The chirally-odd twist-3 distribution function e(x) in the chiral quark-soliton model
• Predictions for azimuthal asymmetries in pion and kaon production in SIDIS off a longitudinally polarized deuterium target at HERMES
• Violation of Sum Rules for Twist-3 Parton Distributions in QCD
• Erratum to "Azimuthal asymmetry in electro-production of neutral pions in semi-inclusive DIS" published in Phys. Lett. B522 (2001) 37

Cited by in corpus (52)

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• Where do we stand with a 3-D picture of the proton?
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• Beam-spin asymmetries from semi-inclusive pion electroproduction
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• $CP$-odd gluonic operators in QCD spin physics
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• Beam-helicity asymmetries for single-hadron production in semi-inclusive deep-inelastic scattering from unpolarized hydrogen and deuterium targets
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• Relating hadronic CP-violation to higher-twist distributions
• Recent progress in the understanding of single spin asymmetries
• Beam Single-Spin Asymmetry in Semi-Inclusive Deep Inelastic Scattering
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• On the beam spin asymmetries of electroproduction of charged hadrons off the nucleon targets
• The cos${\varphi }_R$ asymmetry of dihadron production in double longitudinally polarized SIDIS
• The Tensor and the Scalar Charges of the Nucleon from Hadron Phenomenology
• Phenomenology of Dihadron Fragmentation Function
• Recent developments in nucleon spin structure with focus on h_{1L}^{\perp} and pretzelosity h_{1T}^\perp