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dc.contributor.authorYoung, R.-
dc.identifier.citationPoS (Lattice 2012); 014-
dc.descriptionExtent: 12p.-
dc.description.abstractThe strange quark scalar content plays an important role in both the description of nucleon structure and in the determination of dark matter direct detection cross sections. As a measure of the strange-quark contribution to the nucleon mass, the strange-quark sigma term (ss) provides important insight into the nature of mass generation in QCD. The phenomenological determination of ss exhibits a wide range of variation, with values suggesting that the strange quark contributes anywhere between 0 and more than 30% of the nucleon mass. In the context of dark matter searches, coupled with relatively large Higgs coupling to strangeness, this variation dominates the uncertainty in predicted cross sections for a large class of dark matter models. Here we report on the recent results in lattice QCD, which are now giving a far more precise determination of ss than can be inferred from phenomenology. As a consequence, the lattice determinations of ss can now dramatically reduce the uncertainty in dark matter cross sections associated with the hadronic matrix elements.-
dc.description.statementofresponsibilityR. D. Young-
dc.publisherProceedings of Science-
dc.rights© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence-
dc.titleStrange quark content of the nucleon and dark matter searches-
dc.typeConference paper-
dc.contributor.conferenceInternational Symposium on Lattice Field Theory (30th : 2012 : Cairns, Australia)-
dc.identifier.orcidYoung, R. [0000-0002-4527-1811]-
Appears in Collections:Aurora harvest
Special Research Centre for the Subatomic Structure of Matter publications

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