Quenched hadron spectroscopy with improved staggered quark action

Abstract

We investigate light hadron spectroscopy with an improved quenched staggered quark action. We compare the results obtained with an improved gauge plus an improved quark action, an improved gauge plus standard quark action, and the standard gauge plus standard quark action. Most of the improvement in the spectroscopy results is due to the improved gauge sector. However, the improved quark action substantially reduces violations of Lorentz invariance, as evidenced by the meson dispersion relations.

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References in corpus (16)

• Thermodynamics of SU(3) Lattice Gauge Theory
• On the Viability of Lattice Perturbation Theory
• Lattice QCD on Small Computers
• The classically perfect fixed point action for SU(3) gauge theory
• Quenched Chiral Perturbation Theory for Baryons
• Non--perturbative tests of the fixed point action for SU(3) gauge theory
• Perturbative Improvement for Lattice QCD: An Update
• Quenched Chiral Perturbation Theory for Vector Mesons
• Perfect Lattice Actions for Staggered Fermions
• Improvement of the Staggered Fermion Operators
• QCD Spectrum --- 1996
• Improving the staggered quark action to reduce flavour symmetry violations
• On-shell improved lattice QCD with staggered fermions
• On QCD Thermodynamics with Improved Actions
• Staggered Fermion Actions with Improved Rotational Invariance
• The perfect action for non-degenerate staggered fermions

Cited by in corpus (42)

• Full nonperturbative QCD simulations with 2+1 flavors of improved staggered quarks
• The QCD spectrum with three quark flavors
• High-Precision Lattice QCD Confronts Experiment
• Light pseudoscalar decay constants, quark masses, and low energy constants from three-flavor lattice QCD
• Testing improved actions for dynamical Kogut-Susskind quarks
• Light Hadron Masses from Lattice QCD
• The B -> pi l nu semileptonic form factor from three-flavor lattice QCD: A model-independent determination of |V(ub)|
• The static quark potential in three flavor QCD
• First determination of the strange and light quark masses from full lattice QCD
• QCD Thermodynamics from the Lattice
• Calculating the hadronic vacuum polarization and leading hadronic contribution to the muon anomalous magnetic moment with improved staggered quarks
• Scaling tests of the improved Kogut-Susskind quark action
• Non-compact QED_3 with N_f >=2
• Chiral Logs in the Presence of Staggered Flavor Symmetry Breaking
• The B_s and D_s decay constants in 3 flavor lattice QCD
• Improved Staggered Fermion Actions for QCD Thermodynamics
• Comparative Study of full QCD Hadron Spectrum and Static Quark Potential with Improved Actions
• Unqueched Kogut-Susskind quark propagator in Lattice Landau Gauge QCD
• Tuning Fermilab Heavy Quarks in 2+1 Flavor Lattice QCD with Application to Hyperfine Splittings
• On the fourth root prescription for dynamical staggered fermions
• One-loop matching coefficients for improved staggered bilinears
• One-Loop Matching of the Heavy-Light A_0 and V_0 Currents with NRQCD Heavy and Improved Naive Light Quarks
• The bulk transition of QCD with twelve flavors and the role of improvement
• Systematics of Staggered Fermion Spectral Properties and Topology
• Neutral $B$ mixing from 2+1 flavor lattice-QCD: the Standard Model and beyond
• Effects of the quark field on the ghost propagator of Lattice Landau Gauge QCD
• Higher-order perturbation theory for highly-improved actions
• Second Order Perturbation Theory for Improved Gluon and Staggered Quark Actions
• Infrared features of unquenched finite temperature lattice Landau gauge QCD
• Effects of flavor-symmetry violation from staggered fermion lattice simulations of graphene
• Propagator of the lattice domain wall fermion and the staggered fermion
• The Schwinger Model with Perfect Staggered Fermions
• The Quenched Continuum Limit
• Chiral extrapolation of lattice data for B-meson decay constant
• Hybrid configuration content of heavy S-wave mesons
• Renormalization group improved action on anisotropic lattices
• Nature of the chiral phase transition of two flavour QCD from imaginary chemical potential with HISQ fermions
• Locations of Roberge-Weiss transition endpoints in lattice QCD with $N_f=2$ improved KS quarks
• Hybrid meson decay from lattice QCD
• Lattice results with three quark flavours
• An Algorithmic Approach to Quantum Field Theory
• The running coupling in lattice Landau gauge with unquenched Wilson fermion and KS fermion