Methods for Pseudoscalar Flavour-Singlet Mesons with Staggered Fermions

Abstract

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.

44 pages,24 Figures

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Cited by in corpus (17)

• Full nonperturbative QCD simulations with 2+1 flavors of improved staggered quarks
• Theta dependence of SU(N) gauge theories in the presence of a topological term
• Light composite scalar in eight-flavor QCD on the lattice
• Light flavor-singlet scalars and walking signals in $N_f=8$ QCD on the lattice
• The $\eta$ and ${\eta }^{\prime }$ mesons from Lattice QCD
• Light composite scalar in twelve-flavor QCD on the lattice
• A Prediction of the B*_c mass in full lattice QCD
• The eta' meson from lattice QCD
• Glueball mass measurements from improved staggered fermion simulations
• A study of the eta and eta' mesons with improved staggered fermions
• Staggered fermions, zero modes, and flavor-singlet mesons
• eta' meson From Two Flavor Dynamical Domain Wall Fermions
• Physics of eta-prime with rooted staggered quarks
• The rooting issue for a lattice fermion formulation similar to staggered fermions but without taste mixing
• Hard hadron spectroscopy
• Reliable Semiclassical Computations in QCD
• Multi-hadron operators with all-to-all quark propagators