Uebler, Claudia and Schaefer, Andreas and Vogelsang, Werner (2017) Direct- and resolved-photon threshold resummation for polarized high-p(T) hadron production at COMPASS. PHYSICAL REVIEW D, 96 (7): 074026. ISSN 2470-0010, 2470-0029
Full text not available from this repository.Abstract
We complete our earlier study of the "direct" part of the cross section and spin asymmetry for the photoproduction process gamma N -> hX by analyzing the "resolved" contribution, for which the photon couples like a hadron through its parton structure. The incident photon and nucleon are longitudinally polarized and one observes a hadron h at high transverse momentum pT. Soft or collinear gluon emissions generate large logarithmic threshold corrections which we resum to next-to-leading logarithmic order. We compare our results with recent spin asymmetry data by the COMPASS Collaboration, highlighting the role of the fragmentation functions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QCD HARD SCATTERING; CROSS-SECTIONS; PARTON DISTRIBUTIONS; PHOTOPRODUCTION; COLLISIONS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:19 |
| Last Modified: | 28 Feb 2019 10:06 |
| URI: | https://pred.uni-regensburg.de/id/eprint/1984 |
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