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Title: Nucleon transverse momentum-dependent parton distributions from domain wall fermion calculations at 297 MeV pion mass

Lattice QCD calculations of transverse momentum-dependent parton distributions (TMDs) in a nucleon are performed based on a definition of TMDs via hadronic matrix elements of quark bilocal operators containing staple-shaped gauge connections. A parametrization of the matrix elements in terms of invariant amplitudes serves to cast them in the Lorentz frame preferred for the lattice calculation. Using a RBC/UKQCD domain wall fermion ensemble corresponding to a pion mass of 297MeV, on a lattice with spacing 0.084fm, selected TMD observables are accessed and compared to previous explorations at heavier pion masses on coarser lattices.
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Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-THY-14-1971; DOE/OR/23177-3368
FG02-04ER41302; KA-1401020; SC0011090; G02-96ER40965
DOE Contract Number:
Resource Type:
Resource Relation:
Journal Name: PoS LATTICE2014; Conference: Lattice 2014, 23-28 Jun 2014. Brookhaven, NY, USA
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States