Musch, B. U. and Haegler, Ph. and Engelhardt, M. and Negele, J. W. and Schaefer, A. (2012) Sivers and Boer-Mulders observables from lattice QCD. PHYSICAL REVIEW D, 85 (9): 094510. ISSN 1550-7998,
Full text not available from this repository. (Request a copy)Abstract
We present a first calculation of transverse momentum-dependent nucleon observables in dynamical lattice QCD employing nonlocal operators with staple-shaped, "process-dependent" Wilson lines. The use of staple-shaped Wilson lines allows us to link lattice simulations to TMD effects determined from experiment, and, in particular, to access nonuniversal, naively time-reversal odd TMD observables. We present and discuss results for the generalized Sivers and Boer-Mulders transverse momentum shifts for the SIDIS and DY cases. The effect of staple-shaped Wilson lines on T-even observables is studied for the generalized tensor charge and a generalized transverse shift related to the worm-gear function g(1T). We emphasize the dependence of these observables on the staple extent and the Collins-Soper evolution parameter. Our numerical calculations use an n(f) = 2 + 1 mixed action scheme with domain wall valence fermions on an Asqtad sea and pion masses 369 MeV as well as 518 MeV.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FINAL-STATE INTERACTIONS; SINGLE-SPIN ASYMMETRIES; TRANSVERSE-MOMENTUM; PARTON DISTRIBUTIONS; PHASE-FACTORS; RENORMALIZATION; LEPTOPRODUCTION; SCATTERING; OPERATORS; HADRON; |
| 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 May 2020 10:19 |
| Last Modified: | 13 May 2020 10:19 |
| URI: | https://pred.uni-regensburg.de/id/eprint/18718 |
Actions (login required)
 |
View Item |
