Recent results for the proton spin decomposition from lattice QCD
Abstract
The exact decomposition of the proton spin has been a much debated topic, on the experimental as well as the theoretical side. In this talk we would like to report on recent non-perturbative results and ongoing efforts to explore the proton spin from lattice QCD. We present results for the relevant generalized form factors from gauge field ensembles that feature a physical value of the pion mass. These generalized form factors can be used to determine the total spin and angular momentum carried by the quarks. In addition we present first results for our ongoing effort to compute the angular momentum of the gluons in the proton.
Keywords
Cite
@article{arxiv.1609.00253,
title = {Recent results for the proton spin decomposition from lattice QCD},
author = {Constantia Alexandrou and Martha Constantinou and Kyriakos Hadjiyiannakou and Christos Kallidonis and Giannis Koutsou and Karl Jansen and Haralambos Panagopoulos and Fernanda Steffens and Alejandro Vaquero and Christian Wiese},
journal= {arXiv preprint arXiv:1609.00253},
year = {2016}
}
Comments
6 pages, 2 figures, 2 tables, talk given at the XXIV International Workshop on Deep-Inelastic Scattering and Related Subjects, 11-15 April 2016, DESY Hamburg, Germany