Lattice calculation of [Formula Presented] hybrid mesons with improved Kogut-Susskind fermions

C. Bernard, T. Burch, E. B. Gregory, D. Toussaint, C. DeTar, J. Osborn, Steven Gottlieb, U. M. Heller, R. Sugar

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

We report on a lattice determination of the mass of the exotic [Formula Presented] hybrid meson using an improved Kogut-Susskind action. Results from both quenched and dynamical quark simulations are presented. We also compare with earlier results using Wilson quarks at heavier quark masses. The results on lattices with three flavors of dynamical quarks show effects of sea quarks on the hybrid propagators which probably result from coupling to two meson states. We extrapolate the quenched results to the physical light quark mass to allow comparison with experimental candidates for the [Formula Presented] hybrid meson. The lattice result remains somewhat heavier than the experimental result, although it may be consistent with the [Formula Presented]

Original languageEnglish (US)
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume68
Issue number7
DOIs
StatePublished - Jan 1 2003

ASJC Scopus subject areas

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

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