Process-dependent transverse momentum distributions from lattice QCD
Certain single-spin asymmetries in semi-inclusive deep inelastic scattering (SIDIS) and the Drell-Yan process (DY) can be explained by naively time-reversal odd transverse momentum dependent parton distribution functions (T-odd TMDs). On the lattice, we can use non-local operators with U-shaped Wilson lines to investigate T-odd effects involving the Sivers- and Boer-Mulders function. We discuss the method, its limitations and preliminary results from an exploratory calculation using lattices generated by the MILC and LHP collaborations at a pion mass of 500 MeV.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1994789
- Report Number(s):
- JLAB-THY-11-1400; DOE/OR/23177-1655
- Country of Publication:
- United States
- Language:
- English
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