Single-spin asymmetries in inclusive deep inelastic scattering and multiparton correlations in the nucleon
Abstract
Transverse single-spin asymmetries in inclusive deep inelastic lepton-nucleon scattering can be generated through multiphoton exchange between the leptonic and the hadronic part of the process. Here we consider the two-photon exchange, and mainly focus on the transverse target spin asymmetry. In particular, we investigate the case where two photons couple to different quarks. Such a contribution involves a quark-photon-quark correlator in the nucleon, which has a (model-dependent) relation to the Efremov-Teryaev-Qiu-Sterman quark-gluon-quark correlator T_F. Using different parametrizations for T_F we compute the transverse target spin asymmetries for both a proton and a neutron target and compare the results to recent experimental data. In addition, potential implications for our general understanding of single-spin asymmetries in hard scattering processes are discussed.
Keywords
Cite
@article{arxiv.1209.3138,
title = {Single-spin asymmetries in inclusive deep inelastic scattering and multiparton correlations in the nucleon},
author = {A. Metz and D. Pitonyak and A. Schaefer and M. Schlegel and W. Vogelsang and J. Zhou},
journal= {arXiv preprint arXiv:1209.3138},
year = {2015}
}
Comments
Discussion and references added, to appear in Physical Review D