Speaker
Yibo Yang
(Michigan State University)
Description
We calculate the intrinsic quark and gluon spin contribution to the total proton spin using overlap fermions on Domain-wall ensembles. We find that the total quark spin, with the axial Ward identity satisfied, is ~40%, and the glue spin contribution is ~50% if the matching procedure in LaMET is neglected.
The imperative non-perturbative renormalization to obtain the quark and glue angular momentum fractions will be also introduced in the talk.
Primary author
Yibo Yang
(Michigan State University)
Co-authors
Jian Liang
(University of Kentucky)
Prof.
Keh-Fei Liu
(University of Kentucky)
Raza Sufian
(Jef)
Dr
Terrence Draper
(University of Kentucky)