Total Gluon Helicity from Lattice without Effective Theory Matching

Autor:	Pang, Zhuoyi, Yao, Fei, Zhang, Jian-Hui
Rok vydání:	2024
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Lattice Nuclear Experiment Nuclear Theory
Druh dokumentu:	Working Paper
Popis:	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. Comment: 14 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2404.00693 Zobrazit plný text záznamu View this record from Arxiv