Single-spin asymmetries in inclusive deep inelastic scattering and multiparton correlations in the nucleon
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Journal ArticleDate
2012-11-26Author
Metz, APitonyak, D
Schäfer, A
Schlegel, M
Vogelsang, W
Zhou, J
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http://hdl.handle.net/20.500.12613/5984
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10.1103/PhysRevD.86.094039Abstract
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. © 2012 American Physical Society.Citation to related work
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Physical Review D - Particles, Fields, Gravitation and CosmologyADA compliance
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http://dx.doi.org/10.34944/dspace/5966