Haegler, Ph. and Mukherjee, A. and Schaefer, A. (2004) Quark orbital angular momentum in the Wandzura-Wilczek approximation. PHYSICS LETTERS B, 582 (1-2). pp. 55-63. ISSN 0370-2693, 1873-2445
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We show that quark orbital angular momentum is directly related to off-forward correlation functions which include intrinsic transverse momentum corresponding to a derivative with respect to the transverse coordinates. Its possible contribution to scattering processes is therefore of higher twist and vanishes in the forward limit. The relation of OAM to other twist 2 and 3 distributions known in the literature is derived and formalized by an unintegrated sum rule. (C) 2004 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | VIRTUAL COMPTON-SCATTERING; DEEP-INELASTIC SCATTERING; FINAL-STATE INTERACTIONS; PARTON DISTRIBUTIONS; SPIN; GAUGE; QCD; REPRESENTATION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 21 Jul 2021 11:48 |
| Last Modified: | 21 Jul 2021 11:48 |
| URI: | https://pred.uni-regensburg.de/id/eprint/37983 |
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