{
  "id": "1207.1110",
  "version": "v2",
  "published": "2012-07-04T20:04:12.000Z",
  "updated": "2012-09-11T12:37:40.000Z",
  "title": "<x>_{u-d} from lattice QCD at nearly physical quark masses",
  "authors": [
    "Gunnar S. Bali",
    "Sara Collins",
    "Mridupawan Deka",
    "Benjamin Glaessle",
    "Meinulf Gockeler",
    "Johannes Najjar",
    "Andrea Nobile",
    "Dirk Pleiter",
    "Andreas Schafer",
    "Andre Sternbeck"
  ],
  "comment": "4 pages, 3 figures, v2: minor updates including journal refs",
  "doi": "10.1103/PhysRevD.86.054504",
  "categories": [
    "hep-lat",
    "hep-ph"
  ],
  "abstract": "We determine the second Mellin moment of the isovector quark parton distribution function <x>_{u-d} from lattice QCD with N_f=2 sea quark flavours, employing the non-perturbatively improved Wilson-Sheikholeslami-Wohlert action at a pseudoscalar mass of 157(6) MeV. The result is converted non-perturbatively to the RI'-MOM scheme and then perturbatively to the MSbar scheme at a scale mu = 2 GeV. As the quark mass is reduced we find the lattice prediction to approach the value extracted from experiments.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2012-09-11T12:37:40.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.38.Gc",
      "13.85.-t",
      "14.20.Dh"
    ],
    "keywords": [
      "physical quark masses",
      "lattice qcd",
      "isovector quark parton distribution function",
      "sea quark flavours",
      "second mellin moment"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2012,
      "month": "Sep",
      "volume": 86,
      "number": 5,
      "pages": "054504"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1121382,
      "adsabs": "2012PhRvD..86e4504B"
    }
  }
}