Studies of spin-orbit correlations at JLAB
Mher Aghasyan, Harut Avakian
TL;DR
This paper investigates spin-orbit correlations through single spin asymmetries in pion electroproduction, revealing significant azimuthal asymmetries and their dependence on kinematic variables using polarized electron beams at JLab.
Contribution
It provides new measurements of azimuthal asymmetries in semi-inclusive deep-inelastic scattering, enhancing understanding of spin-orbit effects in nucleon structure.
Findings
Substantial sin φ_h amplitude observed in neutral pion production
Dependence of asymmetry on Bjorken x_B and pion transverse momentum
Comparison with previous data shows consistent trends
Abstract
Studies of single spin asymmetries for pion electroproduction in semi-inclusive deep-inelastic scattering are presented using the polarized \sim6 GeV electrons from at the Thomas Jefferson National Accelerator Facility (JLab) and the Continuous Electron Beam Accelerator Facility (CEBAF) Large Acceptance Spectrometer (CLAS) with the Inner Calorimeter. The cross section versus the azimuthal angle {\phi}_h of the produced neutral pion has a substantial sin {\phi}_h amplitude. The dependence of this amplitude on Bjorken x_B and on the pion transverse momentum is extracted and compared with published data.
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