Spin-3/2 pentaquark resonance signature in lattice QCD

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dc.contributor.authorLasscock, B.
dc.contributor.authorLeinweber, D.
dc.contributor.authorMelnitchouk, W.
dc.contributor.authorThomas, A.
dc.contributor.authorWilliams, A.
dc.contributor.authorYoung, R.
dc.contributor.authorZanotti, J.
dc.date.issued2005
dc.description.abstractThe possible discovery of the Θ+ pentaquark has motivated a number of studies of its nature using lattice QCD. While all the analyses thus far have focused on spin-1/2 states, here we report the results of the first exploratory study in quenched lattice QCD of pentaquarks with spin 3/2. For the spin-3/2 interpolating field we use a product of the standard N and K* 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 JP=3/2- channel. Some evidence of binding is inferred in the isoscalar 3/2+ 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.
dc.description.statementofresponsibilityB. G. Lasscock, J. Hedditch, W. Kamleh, D. B. Leinweber, W. Melnitchouk, A. W. Thomas, A. G. Williams, R. D. Young, and J. M. Zanotti
dc.identifier.citationPhysical Review D: Particles, Fields, Gravitation and Cosmology, 2005; 72(7):074507-1-074507-10
dc.identifier.doi10.1103/PhysRevD.72.074507
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.orcidLeinweber, D. [0000-0002-4745-6027]
dc.identifier.orcidThomas, A. [0000-0003-0026-499X]
dc.identifier.orcidWilliams, A. [0000-0002-1472-1592]
dc.identifier.orcidYoung, R. [0000-0002-4527-1811]
dc.identifier.orcidZanotti, J. [0000-0002-3936-1597]
dc.identifier.urihttp://hdl.handle.net/2440/17567
dc.language.isoen
dc.publisherAmerican Physical Soc
dc.rights©2005 American Physical Society
dc.source.urihttps://doi.org/10.1103/physrevd.72.074507
dc.titleSpin-3/2 pentaquark resonance signature in lattice QCD
dc.typeJournal article
pubs.publication-statusPublished

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