Speaker
Michael Engelhardt
(New Mexico State University)
Description
Previous Lattice QCD calculations of nucleon transverse
momentum-dependent parton distributions (TMDs) focused
on the case of transversely polarized nucleons, and thus
did not encompass two leading-twist TMDs associated with
longitudinal polarization, namely, the helicity TMD and
the worm-gear TMD corresponding to transversely polarized
quarks in a longitudinally polarized nucleon. Based on a
definition of TMDs via hadronic matrix elements of quark
bilocal operators containing staple-shaped gauge connections,
TMD observables characterizing the aforementioned two TMDs
are evaluated, utilizing a RBC/UKQCD domain wall fermion
ensemble at the physical pion mass.
Primary authors
Andrew Pochinsky
(MIT)
Christos Kallidonis
(Jefferson Lab)
Giorgio Silvi
(University of Wuppertal)
Jeremy R Green
(School of Mathematics and Hamilton Mathematics Institute, Trinity College)
John Negele
(MIT)
Michael Engelhardt
(New Mexico State University)
Nesreen Hasan
(University of Wuppertal)
Sergey Syritsyn
(SBU)
Stefan Krieg
(JSC, Forschungszentrum Jülich & HISKP, Bonn University)
Stefan Meinel
(University of Arizona)
Taku Izubuchi
(BNL)
