Study of pentaquarks on the lattice with overlap fermions

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dc.contributor.authorMathur, Nilmanien
dc.contributor.authorLee, Frank X.en
dc.contributor.authorAlexandru, Andreien
dc.contributor.authorBennhold, C.en
dc.contributor.authorChen, Yanbeien
dc.contributor.authorDong, Shao-Jingen
dc.contributor.authorDraper, Terrenceen
dc.contributor.authorHorvath, Ivanen
dc.contributor.authorLiu, K. F.en
dc.contributor.authorTamhankar, Sonalien
dc.contributor.authorZhang, Jian-Boen
dc.contributor.schoolSchool of Chemistry and Physics : Physics and Mathematical Physicsen
dc.date.issued2004en
dc.description.abstractWe present a quenched lattice QCD calculation of spin-1/2 five-quark states with uudds̅ quark content for both positive and negative parities. We do not observe any bound pentaquark state in these channels for either I=0 or I=1. The states we found are consistent with KN scattering states which are checked to exhibit the expected volume dependence of the spectral weight. The results are based on overlap-fermion propagators on two lattices, 12³×28 and 16³×28, with the same lattice spacing of 0.2 fm, and pion mass as low as ∼180  MeV.en
dc.description.statementofresponsibilityN. Mathur, F. X. Lee, A. Alexandru, C. Bennhold, Y. Chen, S. J. Dong, T. Draper, I. Horváth, K. F. Liu, S. Tamhankar, and J. B. Zhangen
dc.identifier.citationPhysical Review D, 2004; 70(7):074508en
dc.identifier.doi10.1103/PhysRevD.70.074508en
dc.identifier.issn0556-2821en
dc.identifier.urihttp://hdl.handle.net/2440/11155
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.rights©2004 American Physical Societyen
dc.titleStudy of pentaquarks on the lattice with overlap fermionsen
dc.typeJournal articleen

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