Twist-3 quark-gluon correlation contribution to single-transverse spin asymmetry for direct-photon and single-jet productions in pp collision
Journal Article
·
· Physics of Particles and Nuclei
- Graduate School of Science and Technology, Niigata University, Ikarashi, Niigata (Japan)
- Department of Physics, Niigata University, Ikarashi, Niigata (Japan)
We study the contribution of the collinear twist-3 quark-gluon correlation to the single transversespin asymmetry in direct-photon and single-jet productions in pp collision. At typical RHIC kinematics we find sizable asymmetries in the forward region of the polarized nucleon while they are almost zero in the backward region. We also find the soft-fermion pole contribution is vanishingly small, suggesting the measurement of these asymmetries provides us with an unique opportunity to determine the net soft-gluon pole function.
- OSTI ID:
- 22977344
- Journal Information:
- Physics of Particles and Nuclei, Journal Name: Physics of Particles and Nuclei Journal Issue: 1 Vol. 45; ISSN 1063-7796
- Country of Publication:
- United States
- Language:
- English
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