Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/104258
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dc.contributor.authorWang, X.-
dc.contributor.authorJi, C.-
dc.contributor.authorMelnitchouk, W.-
dc.contributor.authorSalamu, Y.-
dc.contributor.authorThomas, A.-
dc.contributor.authorWang, P.-
dc.date.issued2016-
dc.identifier.citationPhysical Review D, 2016; 94(9):094035-1-094035-22-
dc.identifier.issn2470-0010-
dc.identifier.issn2470-0029-
dc.identifier.urihttp://hdl.handle.net/2440/104258-
dc.description.abstractWe perform a comprehensive analysis of the strange-antistrange parton distribution function (PDF) asymmetry in the proton in the framework of chiral effective theory, including the full set of lowest-order kaon loop diagrams with off-shell and contact interactions, in addition to the usual on-shell contributions previously discussed in the literature. We identify the presence of δ-function contributions to the s‾ PDF at x = 0, with a corresponding valencelike component of the s-quark PDF at larger x, which allows greater flexibility for the shape of s- s‾. Expanding the moments of the PDFs in terms of the pseudoscalar kaon mass, we compute the leading nonanalytic behavior of the number and momentum integrals of the s and s‾ distributions, consistent with the chiral symmetry of QCD. We discuss the implications of our results for the understanding of the NuTeV anomaly and for the phenomenology of strange-quark PDFs in global QCD analysis.-
dc.description.statementofresponsibilityX.G. Wang, Chueng-Ryong Ji, W. Melnitchouk, Y. Salamu, A.W. Thomas, and P. Wang-
dc.language.isoen-
dc.publisherAmerican Physical Society-
dc.rights© 2016 American Physical Society-
dc.source.urihttp://dx.doi.org/10.1103/physrevd.94.094035-
dc.titleStrange-quark asymmetry in the proton in chiral effective theory-
dc.typeJournal article-
dc.identifier.doi10.1103/PhysRevD.94.094035-
dc.relation.granthttp://purl.org/au-research/grants/arc/CE1101004-
dc.relation.granthttp://purl.org/au-research/grants/arc/FL0992247-
dc.relation.granthttp://purl.org/au-research/grants/arc/DP150103101-
pubs.publication-statusPublished-
dc.identifier.orcidWang, X. [0000-0001-9164-0027]-
dc.identifier.orcidThomas, A. [0000-0003-0026-499X]-
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