{
  "id": "1306.6939",
  "version": "v2",
  "published": "2013-06-28T19:44:57.000Z",
  "updated": "2015-03-18T02:53:57.000Z",
  "title": "Nuclear σ-terms and Scalar-Isoscalar WIMP-Nucleus Interactions from Lattice QCD",
  "authors": [
    "S. R. Beane",
    "S. D. Cohen",
    "W. Detmold",
    "H. -W. Lin",
    "M. J. Savage"
  ],
  "comment": "journal version",
  "journal": "Phys. Rev. D 89, 074505 (2014)",
  "doi": "10.1103/PhysRevD.89.074505",
  "categories": [
    "hep-ph",
    "hep-lat",
    "nucl-th"
  ],
  "abstract": "It has been argued that the leading scalar-isoscalar WIMP-nucleus interactions receive parametrically enhanced contributions in the context of nuclear effective field theories. These contributions arise from meson-exchange currents (MECs) and potentially modify the impulse approximation estimates of these interactions by 10--60%. We point out that these MECs also contribute to the quark mass dependence of nuclear binding energies, that is, nuclear \\sigma-terms. In this work, we use recent lattice QCD calculations of the binding energies of the deuteron, He-3 and He-4 at pion masses near 500 MeV and 800 MeV, combined with the experimentally determined binding energies at the physical point, to provide approximate determinations of the \\sigma-terms for these light nuclei. For each nucleus, we find that the deviation of the corresponding nuclear \\sigma-term from the single-nucleon estimate is at the few percent level, in conflict with the conjectured enhancement. As a consequence, lattice QCD calculations currently indicate that the cross sections for scalar-isoscalar WIMP-nucleus interactions arising from fundamental WIMP interactions with quarks do not suffer from significant uncertainties due to enhanced meson-exchange currents.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-06-28T19:44:57.000Z",
      "comment": null
    },
    {
      "version": "v2",
      "updated": "2015-03-18T02:53:57.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.38.Gc"
    ],
    "keywords": [
      "lattice qcd calculations",
      "scalar-isoscalar wimp-nucleus interactions receive",
      "receive parametrically enhanced contributions",
      "binding energies"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2014,
      "month": "Apr",
      "volume": 89,
      "number": 7,
      "pages": "074505"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1240522,
      "adsabs": "2014PhRvD..89g4505B"
    }
  }
}