Document Type
Article
Publication Date
1-30-2012
Abstract
We report the first measurement of the double-spin asymmetry ALT for charged pion electroproduction in semi-inclusive deep-inelastic electron scattering on a transversely polarized 3He target. The kinematics focused on the valence quark region, 0.1622. The corresponding neutron ALT asymmetries were extracted from the measured 3He asymmetries and proton over 3He cross section ratios using the effective polarization approximation. These new data probe the transverse momentum dependent parton distribution function g1Tq and therefore provide access to quark spin-orbit correlations. Our results indicate a positive azimuthal asymmetry for π- production on 3He and the neutron, while our π+ asymmetries are consistent with zero.
DOI
10.1103/PhysRevLett.108.052001
Version
Publisher's PDF
Recommended Citation
Huang, J.; Holmstrom, Timothy; and Jefferson Lab Hall A Collaboration, "Beam-Target Double-Spin Asymmetry A(LT) in Charged Pion Production from Deep Inelastic Scattering on a Transversely Polarized (3)He Target at 1.4" (2012). Chemistry & Physics Faculty Publications. 17.
https://digitalcommons.longwood.edu/chemphys_facpubs/17
Original Citation
Phys. Rev. Lett. 108, 052001 (2012)
Comments
© 2012 American Physical Society. The original publication is available at http://link.aps.org/doi/10.1103/PhysRevLett.108.052001