New results on SIDIS SSA from Jefferson Lab

Abstract

We present studies of single-spin and double-spin asymmetries in semi-inclusive electroproduction of pions using the CEBAF 6 GeV polarized electron beam. Kinematic dependences of single and double spin asymmetries have been measured in a wide kinematic range at CLAS with a polarized NH${}_3$ target. Significant target-spin $\sin 2\varphi$ and $\sin \varphi$ asymmetries have been observed. The hypothesis of factorization has been tested with $z$-dependence of the double spin asymmetry.

4 pages, 6 figures

Cited by in corpus (23)

• Azimuthal and Single Spin Asymmetries in Hard Scattering Processes
• The transverse momentum dependent distribution functions in the bag model
• An Observation Concerning the Process Dependence of the Sivers Functions
• Transverse Quark Spin Effects and the Flavor Dependence of the Boer-Mulders Function
• Evolution of twist-3 multi-parton correlation functions relevant to single transverse-spin asymmetry
• Measurement of Single and Double Spin Asymmetries in Deep Inelastic Pion Electroproduction with a Longitudinally Polarized Target
• Azimuthal spin asymmetries in light-cone constituent quark models
• Intrinsic quark transverse momentum in the nucleon from lattice QCD
• Transverse momentum dependent distribution functions in a covariant parton model approach with quark orbital motion
• Pretzelosity distribution function h_1T^perp and the single spin asymmetry A_UT^sin(3phi-phi_S)
• Single transverse-spin asymmetry for $D$-meson production in semi-inclusive deep inelastic scattering
• Are there approximate relations among transverse momentum dependent distribution functions?
• Final state interactions and the transverse structure of the pion using non-perturbative eikonal methods
• Single Transverse-Spin Asymmetries at Large-x
• Precise Measurements of Beam Spin Asymmetries in Semi-Inclusive ${\pi }^0$ production
• Monte Carlo Simulations of Hadronic Fragmentation Functions using NJL-Jet Model
• Insights on non-perturbative aspects of TMDs from models
• Monte Carlo simulation of the Sivers effect in high-energy proton-proton collisions
• Towards a model independent approach to fragmentation functions
• Final State Interactions and the Transverse Structure of the Pion
• Accessing tri-gluon correlations in the nucleon via the single spin asymmetry in open charm production
• Recent developments in nucleon spin structure with focus on h_{1L}^{\perp} and pretzelosity h_{1T}^\perp
• Collins Effect in SIDIS and in ${\mathbf{e}}^{+}{\mathbf{e}}^{-}$ Annihilation