A New Approach for Single Transverse-Spin Asymmetries from Twist-3 Soft-Gluon Mechanism

Journal Article · Wed Jun 13 00:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2750840· OSTI ID:21063978

Koike, Yuji ^[1]; Tanaka, Kazuhiro ^[2]

---

1. Department of Physics, Niigata University, Ikarashi, Niigata 950-2181 (Japan)
2. 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, Vol. 915, Issue 1; Conference: 17. international spin physics symposium, Kyoto (Japan), 2-7 Oct 2006; Other Information: DOI: 10.1063/1.2750840; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
ASYMMETRY
BORN APPROXIMATION
CORRELATIONS
CROSS SECTIONS
GLUONS
NUCLEONS
QUANTUM CHROMODYNAMICS
QUARK-GLUON INTERACTIONS
QUARKS
SCATTERING
SPIN