Jaeger, Barbara and Stratmann, Marco and Kretzer, Stefan and Vogelsang, Werner (2004) QCD hard scattering and the sign of the spin asymmetry A(LL)(pi). PHYSICAL REVIEW LETTERS, 92 (12): 121803. ISSN 0031-9007, 1079-7114
Full text not available from this repository.Abstract
Recent preliminary PHENIX data are consistent with a negative and sizable longitudinal double-spin asymmetry A(LL)(pi) for pi(0) production at moderate transverse momentum p(perpendicular to)similar or equal to1-4 GeV and central rapidity. By means of a systematic investigation of the relevant degrees of freedom, we show that the perturbative QCD framework at leading power in p(perpendicular to) produces at best a very small negative asymmetry in this kinematic range.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | GLUON; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 21 Jul 2021 09:58 |
| Last Modified: | 21 Jul 2021 09:58 |
| URI: | https://pred.uni-regensburg.de/id/eprint/37860 |
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