2014/12/22 by Raza Sabbir Sufian, Sufian, Raza Sabbir, Michael J. Glatzmaier +7
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph
paper · pdf · doi:10.48550/arxiv.1412.7168
7 Pages, 4 figures, contribution to the 32nd International Symposium on Lattice Field Theory (Lattice 2014), 23-28 June 2014, Columbia University, New York, NY, USA
openalex publication_date 2014/12/22 · arxiv created 2015/03/03 · arxiv updated 2015/03/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present a lattice QCD calculation of the glue spin SG in the nucleon for the first time. It was recently shown that the first moment of the glue helicity distribution could be obtained through the cross-product of the the electric field E and the physical gauge field Aphys with the non-Abelian Coulomb gauge condition, i.e. ∫ d3 x E(x) × Aphys(x) in the infinite momentum frame. We use the gauge field tensor from the overlap Dirac operator to check the frame dependence and calculate glue spin with several momenta. The calculation is carried out with valence overlap fermion on 2+1 flavor DWF gauge configurations on the 243 × 64 lattice with a-1=1.77 GeV with the light sea quark mass corresponding to a pion mass of 330 MeV.