Lattice QCD Studies of Transverse Momentum-Dependent Parton Distribution Functions
Author(s)
Engelhardt, M.; Musch, B.; Hägler, P.; Schäfer, A.; Negele, John W
Download601_2015_Article_976.pdf (658.0Kb)
OPEN_ACCESS_POLICY
Open Access Policy
Creative Commons Attribution-Noncommercial-Share Alike
Terms of use
Metadata
Show full item recordAbstract
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.
Date issued
2015-04Department
Massachusetts Institute of Technology. Center for Theoretical Physics; Massachusetts Institute of Technology. Department of PhysicsJournal
Few-Body Systems
Publisher
Springer Vienna
Citation
Engelhardt, M. et al. “Lattice QCD Studies of Transverse Momentum-Dependent Parton Distribution Functions.” Few-Body Systems 56.6–9 (2015): 447–453.
Version: Author's final manuscript
ISSN
0177-7963
1432-5411