A New Approach for Single Transverse-Spin Asymmetries from Twist-3 Soft-Gluon Mechanism
Journal Article
·
· AIP Conference Proceedings
- Department of Physics, Niigata University, Ikarashi, Niigata 950-2181 (Japan)
- Department of Physics, Juntendo University, Inba-gun, Chiba 270-1695 (Japan)
A dominant QCD mechanism for the single transverse-spin asymmetry in hard processes is induced by the twist-3 quark-gluon correlations inside nucleon, combined with the soft-gluonic poles to produce the interfering phase for the associated partonic hard scattering. It is shown that the corresponding interfering amplitude can be calculated entirely in terms of the partonic Born cross section which participates in the twist-2 cross section formula for the spin-averaged process.
- OSTI ID:
- 21063978
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 915; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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