Methods for Pseudoscalar Flavour-Singlet Mesons with Staggered Fermions

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Authors
Gregory, Eric B.
Irving, Alan C.
Richards, Chris M.
McNeile, Craig
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Abstract
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We present the first 2+1 flavour lattice QCD calculations of pseudoscalar flavour-singlet propagators using improved staggered fermions. We explore the relevant techniques and discuss prospects for the larger scale studies now in progress. The disconnected correlator is shown to have a highly non-Gaussian distribution and reliable estimates of the errors require care.
Comment: 44 pages,24 Figures
Keywords
High Energy Physics - Lattice
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