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Pion and kaon physics with improved staggered quarks

  • C. Aubin
  • , C. Bernard
  • , C. DeTar
  • , Steven Gottlieb
  • , E. B. Gregory
  • , Urs M. Heller
  • , J. E. Hetrick
  • , J. Osborn
  • , R. Sugar
  • , D. Toussaint

Research output: Contribution to journalArticlepeer-review

Abstract

We compute pseudoscalar meson masses and decay constants using staggered quarks on lattices with three flavors of sea quarks and lattice spacings ≈ 0.12 fm and ≈ 0.09 fm. We fit partially quenched results to "staggered chiral perturbation theory" formulae, thereby taking into account the effects of taste-symmetry violations. Chiral logarithms are observed. From the fits we calculate fπ and fK, extract Gasser-Leutwyler parameters of the chiral Lagrangian, and (modulo rather large perturbative errors) find the light and strange quark masses.

Original languageEnglish (US)
Pages (from-to)227-229
Number of pages3
JournalNuclear Physics B - Proceedings Supplements
Volume129-130
DOIs
StatePublished - Mar 2004

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics

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