1994/08/05 by Keh-Fei Liu, Liu, Keh-Fei
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.hep-lat/9408007
openalex publication_date 1994/08/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report results on the nucleon structure obtained from the lattice quantum chromodynamics calculation. These include the axial, electromagnetic, πNN, and scalar form factors. The calculation is carried out at β= 6 on a 163 × 24 lattice with 24 quenched gauge configurations. The chiral limit results are extrapolated from several light quark cases. For the disconnected insertion (sea-quark contribution), we used the stochastic estimation with the Z2 noise to calculate the diagonal and off-diagonal traces of the inverse matrices with a size of 106 × 106. It is found that the Z2 noise is the optimal choice and its comparison with the Gaussian noise for our quark matrix is given. For the sea-quark contribution, we report results on the strange condensate in the nucleon and the πN σ term.