Even parity excitations of the nucleon in lattice QCD

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dc.contributor.authorLasscock, B.
dc.contributor.authorHedditch, J.
dc.contributor.authorKamleh, W.
dc.contributor.authorLeinweber, D.
dc.contributor.authorMelnitchouk, W.
dc.contributor.authorWilliams, A.
dc.contributor.authorZanotti, J.
dc.date.issued2007
dc.description.abstractWe study the spectrum of the even parity excitations of the nucleon in quenched lattice QCD. We extend our earlier analysis by including an expanded basis of nucleon interpolating fields, increasing the physical size of the lattice, including more configurations to enhance statistics and probing closer to the chiral limit. With a review of world lattice data, we conclude that there is little evidence of the Roper resonance in quenched lattice QCD.
dc.description.statementofresponsibilityB. G. Lasscock, J. N. Hedditch, W. Kamleh, D. B. Leinweber, W. Melnitchouk, A. G. Williams, and J. M. Zanotti
dc.identifier.citationPhysical Review D: Particles, Fields, Gravitation and Cosmology, 2007; 76(5):054510-01-054510-08
dc.identifier.doi10.1103/PhysRevD.76.054510
dc.identifier.issn1550-7998
dc.identifier.issn0556-2821
dc.identifier.orcidKamleh, W. [0000-0002-6177-5366]
dc.identifier.orcidLeinweber, D. [0000-0002-4745-6027]
dc.identifier.orcidWilliams, A. [0000-0002-1472-1592]
dc.identifier.orcidZanotti, J. [0000-0002-3936-1597]
dc.identifier.urihttp://hdl.handle.net/2440/44293
dc.language.isoen
dc.publisherAmerican Physical Soc
dc.rights©2007 American Physical Society
dc.source.urihttps://doi.org/10.1103/physrevd.76.054510
dc.subjectHigh Energy Physics - Lattice (hep-lat)
dc.titleEven parity excitations of the nucleon in lattice QCD
dc.typeJournal article
pubs.publication-statusPublished

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