Light hadron masses with a tadpole-improved next-nearest-neighbour lattice fermion action

Abstract

Calculations of hadron masses are done in quenched approximation using gauge field and fermion actions which are both corrected for discretization errors to $O(a^2)$ at the classical level and which contain tadpole improvement factors. The fermion action has both nearest-neighbour and next-nearest-neighbour couplings in the kinetic and Wilson terms. Simulations done at lattice spacings of $0.27$ and $0.4$fm yield hadron masses which are already quite close to experimental values. The results are compared to Wilson action calculations done at comparable lattice spacings.

18 pages, 3 postscript figures, revised May 1996

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• A Study of Gluon Propagator on Coarse Lattice
• Hyperfine effects in charmed baryons
• Light Hadron Spectroscopy on Coarse Lattices with O(a^2) Mean-Field Improved Actions
• Improved Honeycomb and Hyperhoneycomb Lattice Hamiltonians for Quantum Simulations of Non-Abelian Gauge Theories
• The Mass Spectrum of Light and Heavy Hadrons from Improved Lattice Actions
• On the I=2 channel pi-pi interaction in the chiral limit
• Stringy Mass Squared Splittings Revisited
• Two-body spectra of pseudoscalar mesons with an $O(a^2)$--improved lattice action using Wilson fermions
• Light vector meson decay constants and the renormalization factor from a tadpole-improved action
• Charmed baryons from lattice QCD