Speaker
Zhuoyi Pang
(The Chinese University of HongKong, ShenZhen)
Description
We propose two approaches for extracting the total gluon helicity contribution to proton spin from lattice QCD, one from local operator matrix elements in a fixed gauge accessible on lattice with feasible renormalization, and the other from gauge-invariant nonlocal gluon correlators. Neither of these approaches requires a matching procedure when converted to the MS scheme. Our proposal resolves a long-standing inconsistency in the literature regarding lattice calculations of the total gluon helicity, and has the potential to greatly facilitate these calculations.
Primary author
Zhuoyi Pang
(The Chinese University of HongKong, ShenZhen)
Co-authors
Dr
Fei Yao
(BrookHaven National Laboratory)
Prof.
Jianhui Zhang
(The Chinese University of HongKong, ShenZhen)
