Speaker
Michael Engelhardt
(NMSU)
Description
An exploration of nucleon TMD observables at a substantially lower
pion mass, 170 MeV, than used in previous lattice TMD calculations
is presented. On a corresponding RBC/UKQCD DWF ensemble, TMDs are
extracted from nucleon matrix elements of a bilocal quark operator
containing a staple-shaped gauge link. Appropriate TMD ratios are
constructed to cancel divergences associated with the gauge link.
In particular, time-reversal odd observables associated with the
Sivers and Boer-Mulders effects are considered. The results are
compared with previous DWF calculations at 297 MeV pion mass with
a view to exploring whether these observables vary strongly as a
function of pion mass in the chiral regime.
Primary author
Michael Engelhardt
(NMSU)
