Spin 3/2 Pentaquark Resonance Signature in Lattice QCD

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dc.creatorLasscock, B. G.
dc.creatorLeinweber, D. B.
dc.creatorMelnitchouk, W.
dc.creatorThomas, A. W.
dc.creatorWilliams, A. G.
dc.creatorYoung, R. D.
dc.creatorZanotti, J. M.
dc.date2005-04-18
dc.date2005-10-07
dc.date.accessioned2026-07-07T11:04:35Z
dc.date.available2026-07-07T11:04:35Z
dc.descriptionThe possible discovery of the Theta+ pentaquark has motivated a number of studies of its nature using lattice QCD. While all the analyses thus far have focussed 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 J^P = 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.description23 pages, 23 figures
dc.identifierhttps://arxiv.org/abs/hep-lat/0504015
dc.identifierhttp://arxiv.org/abs/hep-lat/0504015
dc.identifierPhys.Rev.D72:074507,2005
dc.identifierdoi:10.1103/PhysRevD.72.074507
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188943
dc.subjectHigh Energy Physics - Lattice
dc.titleSpin 3/2 Pentaquark Resonance Signature in Lattice QCD
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