Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/78850
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dc.contributor.authorShanahan, P.en
dc.contributor.authorThomas, A.en
dc.contributor.authorTsushima, K.en
dc.contributor.authorYoung, R.en
dc.contributor.authorMyhrer, F.en
dc.date.issued2013en
dc.identifier.citationPhysical Review Letters, 2013; 110(20):1-5en
dc.identifier.issn0031-9007en
dc.identifier.issn1079-7114en
dc.identifier.urihttp://hdl.handle.net/2440/78850-
dc.description.abstractThe relatively small fraction of the spin of the proton carried by its quarks presents a major challenge to our understanding of the strong interaction. Traditional efforts to explore this problem have involved new and imaginative experiments and QCD based studies of the nucleon. We propose a new approach to the problem that exploits recent advances in lattice QCD. In particular, we extract values for the spin carried by the quarks in other members of the baryon octet in order to see whether the suppression observed for the proton is a general property or depends significantly on the baryon structure. We compare these results with the values for the spin fractions calculated within a model that includes the effects of confinement, relativity, gluon exchange currents, and the meson cloud required by chiral symmetry, finding a very satisfactory level of agreement given the precision currently attainable.en
dc.description.statementofresponsibilityP. E. Shanahan, A.W. Thomas, K. Tsushima, R. D. Young, and F. Myhreren
dc.language.isoenen
dc.publisherAmerican Physical Socen
dc.rights© 2013 American Physical Societyen
dc.titleOctet spin fractions and the proton spin problemen
dc.typeJournal articleen
dc.identifier.rmid0020128922en
dc.identifier.doi10.1103/PhysRevLett.110.202001en
dc.relation.granthttp://purl.org/au-research/grants/arc/FL0992247en
dc.relation.granthttp://purl.org/au-research/grants/arc/DP110101265en
dc.relation.granthttp://purl.org/au-research/grants/arc/FT120100821en
dc.identifier.pubid19160-
pubs.library.collectionChemistry and Physics publicationsen
pubs.verification-statusVerifieden
pubs.publication-statusPublisheden
dc.identifier.orcidThomas, A. [0000-0003-0026-499X]en
dc.identifier.orcidYoung, R. [0000-0002-4527-1811]en
Appears in Collections:Chemistry and Physics publications

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