Speaker
Raza Sufian
(University of kentucky)
Description
We present a lattice QCD calculation of the glue helicity $\Delta G$ in the nucleon for the first time.
It is recently shown that the first moment of the glue helicity distribution can be obtained through the product
of the the electric field $\vec{E}$ and the gauge field in the Coulomb gauge $\vec{A}_C$, i.e.
$\vec{E} \times \vec{A}_C$ in the infinite momentum frame. We used the gauge field tensor from the overlap
Dirac operator to check the frame dependence with several momenta. The calculation is carried out
with valence overlap fermion on 2+1 flavor DWF gauge configurations on the $24^3 \times 64$ lattice
with the light sea quark mass corresponds to a pion mass of 330 MeV.
Primary author
Raza Sufian
(University of kentucky)
Co-authors
Prof.
Keh-Fei Liu
(University of kentucky)
Dr
Michael J. Glatzmaier
(University of Kentucky)
Dr
Yi-Bo Yang
(University of Kentucky)
