Light hadron spectroscopy withO(a)<mml:mn/>improved dynamical fermions

1998/08/17 by UKQCD Collaboration, Chris Allton, C. R. Allton +20 · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat

paper · pdf · doi:10.1103/physrevd.60.034507

published as Phys.Rev.D60:034507,1999 · 38 pages, 14 Postscript figure, LaTeX

arxiv created 1998/08/17 · openalex publication_date 1999/07/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We present the first results for the static quark potential and the light hadron spectrum using dynamical fermions at \ensuremathβ=5.2 using an O(a) improved Wilson fermion action together with the standard Wilson plaquette action for the gauge part. Sea quark masses were chosen such that the pseudoscalar-vector mass ratio, m_PS/m_V, varies from 0.86 to 0.67. Finite-size effects are studied by using three different volumes 8³\ifmmode×\else\texttimes\fi24, 12³\ifmmode×\else\texttimes\fi24, and 16³\ifmmode×\else\texttimes\fi24. Comparing our results to previous ones obtained using the quenched approximation, we find evidence for sea quark effects in quantities such as the static quark potential and vector-pseudoscalar hyperfine splitting.

Citations

• Scaling of nonperturbativelyO(a)<mml:mn/>-improved Wilson fermions: Hadron spectrum, quark masses, and decay constants
• Full QCD simulation on CP-PACS
• Effect of tree-level and mean-field improvement on the light-hadron spectrum in quenched QCD
• Maximal variance reduction for stochastic propagators with applications to the static quark spectrum

Cited by

• Lattice QCD with two dynamical flavors of domain wall fermions