Pentaquark hadrons from lattice QCD

Research output: Contribution to journalArticle

95 Citations (Scopus)

Abstract

We study spin 1/2 isoscalar and isovector candidates in both parity channels for the recently discovered Θ+ (1540) pentaquark particle in quenched lattice QCD. Our analysis takes into account all possible uncertainties, such as statistical, finite size and quenching errors when performing the chiral and continuum extrapolations and we have indications that our signal is separated from scattering states. The lowest mass that we find in the IP = 0- channel is in complete agreement with the experimental value of the Θ+ mass. On the other hand, the lowest mass state in the opposite parity IP = 0+ channel is much higher. Our findings suggests that the parity of the Θ+ is negative.

Original languageEnglish
Pages (from-to)1635-1647
Number of pages13
JournalJournal of High Energy Physics
Volume7
Issue number11
Publication statusPublished - Nov 1 2003

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hadrons
parity
quantum chromodynamics
extrapolation
indication
quenching
continuums
scattering

Keywords

  • Lattice QCD
  • Lattice Quantum Field Theory

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Pentaquark hadrons from lattice QCD. / Csikor, F.; Fodor, Z.; Katz, S.; Kovács, T.

In: Journal of High Energy Physics, Vol. 7, No. 11, 01.11.2003, p. 1635-1647.

Research output: Contribution to journalArticle

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