Ma, BQ and Schmidt, I and Yang, JJ (2005) Collins effect in single spin asymmetries of the p up arrow p -> pi X process. EUROPEAN PHYSICAL JOURNAL C, 40 (1). pp. 63-67. ISSN 1434-6044, 1434-6052
Full text not available from this repository. (Request a copy)Abstract
We investigate the Collins effect in single spin asymmetries ( SSAs) of the p(up arrow)p -> pi X process by taking into account the transverse momentum dependence of the microscopic sub-process cross sections, with the transverse momentum in the Collins function integrated over. We find that the asymmetries due to the Collins effect can only explain the available data at best qualitatively, by using our choices of quark distributions in the quark-diquark model and a pQCD-based analysis, together with several options of the Collins function. Our results indicate the necessity to take into account contributions from other effects such as the Sivers effect or twist-3 contributions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DEEP-INELASTIC SCATTERING; PARTON DISTRIBUTIONS; PION-PRODUCTION; SEMIINCLUSIVE ELECTROPRODUCTION; AZIMUTHAL ASYMMETRY; STATE INTERACTIONS; MELOSH ROTATION; PROTON SPIN; SUM-RULES; DRELL-YAN; |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 19 May 2021 10:44 |
| Last Modified: | 19 May 2021 10:44 |
| URI: | https://pred.uni-regensburg.de/id/eprint/36405 |
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