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

11 Scopus citations


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
StatePublished - Mar 2004
Externally publishedYes

ASJC Scopus subject areas

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


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