2011/12/31 by Eric B. Gregory, Alan C. Irving, Christopher M. Richards +1 · 46 citations
Mathematics · Physics and Astronomy · #High-Energy Particle Collisions Research #Mathematics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat
paper · pdf · doi:10.1103/physrevd.86.014504
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 86(1) (American Physical Society) · 10 pages, 10 figures; replacing with published version (1 figure and some discussion added; typos corrected)
arxiv created 2012/07/11 · arxiv updated 2013/05/29
We report on a high statistics lattice QCD calculation of the mass of the \ensuremathη and \ensuremathη^\ensuremath' mesons using ASQTAD improved staggered fermions. The calculation used two ensembles with different lattice spacings and pion masses. We also report results for \ensuremathη\mathrm\text\ensuremath-\ensuremathη^\ensuremath' mixing. The results are in satisfactory agreement with other lattice calculations using other fermion formulations and with experiment, given the unphysical quark masses used. We see no evidence of abnormal behavior at the lattice spacings studied.