Studying the Sivers and Boer-Mulders function with Lattice QCD

Conference · Fri Apr 01 04:00:00 EDT 2011

DOI:https://doi.org/10.2172/1963486· OSTI ID:1963486

Musch, Bernhard ^[1]; Haegler, Philipp ^[2]; Prokudin, Alexei ^[3]; Schafer, Andreas ^[4]

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1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
2. Tech. University Munich, Munich, Germany
3. Pennsylvania State University, State College, PA
4. Univ. Regensburg, Regensburg, Germany

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: 1963486
• Report Number(s): JLAB-THY-11-1369; DOE/OR/23177-5878
• Country of Publication: United States
• Language: English