Engelhardt, M. and Musch, B. and Haegler, P. and Negele, J. and Schaefer, A. (2015) Lattice QCD Studies of Transverse Momentum-Dependent Parton Distribution Functions. FEW-BODY SYSTEMS, 56 (6-9). pp. 447-453. ISSN 0177-7963, 1432-5411
Full text not available from this repository. (Request a copy)Abstract
Transverse momentum-dependent parton distributions (TMDs) relevant for semi-inclusive deep inelastic scattering and the Drell-Yan process can be defined in terms of matrix elements of a quark bilocal operator containing a staple-shaped gauge link. Such a definition opens the possibility of evaluating TMDs within lattice QCD. By parametrizing the aforementioned matrix elements in terms of invariant amplitudes, the problem can be cast in a Lorentz frame suited for the lattice calculation. Results for selected TMD observables are presented, including a particular focus on their dependence on a Collins-Soper-type evolution parameter, which quantifies proximity of the staple-shaped gauge links to the light cone.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 Jun 2019 13:53 |
| Last Modified: | 13 Jun 2019 13:53 |
| URI: | https://pred.uni-regensburg.de/id/eprint/4944 |
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