Quenched hadron spectroscopy with improved staggered quark action

Claude Bernard, Tom Blum, Thomas A. DeGrand, Carleton DeTar, Steven Gottlieb, Urs M. Heller, James E. Hetrick, Craig McNeile, K. Rummukainen, Bob Sugar, Doug Toussaint

Research output: Contribution to journalArticle

62 Scopus citations

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.

Original languageEnglish (US)
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume58
Issue number1
DOIs
StatePublished - Jan 1 1998

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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    Bernard, C., Blum, T., DeGrand, T. A., DeTar, C., Gottlieb, S., Heller, U. M., Hetrick, J. E., McNeile, C., Rummukainen, K., Sugar, B., & Toussaint, D. (1998). Quenched hadron spectroscopy with improved staggered quark action. Physical Review D - Particles, Fields, Gravitation and Cosmology, 58(1). https://doi.org/10.1103/PhysRevD.58.014503