Model Prediction for the Transverse Single Target-Spin Asymmetry in inclusive DIS

TL;DR

This paper investigates the transverse single target-spin asymmetry in inclusive deep-inelastic scattering, modeling non-perturbative correlations to estimate asymmetries for protons and neutrons.

Contribution

It introduces a model for quark-gluon correlations expressed via non-valence light cone wave functions to estimate spin asymmetries.

Findings

Estimated asymmetries for proton and neutron

Model-based predictions of two-photon exchange effects

Insights into non-perturbative multiparton correlations

Abstract

The single-spin asymmetry of unpolarized leptons scattering deep-inelastically off transversely polarized nucleons is discussed. This observable is generated by a two-photon exchange between lepton and nucleon. In a partonic description of the asymmetry the non-perturbative part is given in terms of multiparton correlations: quark-gluon correlation functions and quark-photon correlation functions. Recently, a model for quark-gluon correlation functions was presented where these objects were expressed through non-valence light cone wave functions. Using this model, estimates for the single-spin asymmetries for a proton and a neutron are presented.