Abstract
The possible discovery of the pentaquark has motivated a number of studies of its nature using lattice QCD. While all the analyses thus far have focused on spin- states, here we report the results of the first exploratory study in quenched lattice QCD of pentaquarks with spin . For the spin- interpolating field we use a product of the standard and operators. We do not find any evidence for the standard lattice resonance signature of attraction (i.e., binding at quark masses near the physical regime) in the channel. Some evidence of binding is inferred in the isoscalar channel at several quark masses, in accord with the standard lattice resonance signature. This suggests that this is a good candidate for the further study of pentaquarks on the lattice.
16 More- Received 18 April 2005
DOI:https://doi.org/10.1103/PhysRevD.72.074507
©2005 American Physical Society