Pentaquark hadrons from lattice QCD

Ferenc Csikor, Zoltán Fodor, Sándor D. Katz, Tamás G. Kovács

Research output: Contribution to journalArticlepeer-review

101 Scopus citations

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 (US)
Pages (from-to)1635-1647
Number of pages13
JournalJournal of High Energy Physics
Volume7
Issue number11
DOIs
StatePublished - Nov 1 2003

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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