{
  "id": "hep-ph/0404093",
  "version": "v2",
  "published": "2004-04-09T15:06:09.000Z",
  "updated": "2004-07-15T01:03:48.000Z",
  "title": "Nuclear parton distribution functions and their uncertainties",
  "authors": [
    "M. Hirai",
    "S. Kumano",
    "T. -H. Nagai"
  ],
  "comment": "9 pages, REVTeX, 23 eps files, Phys. Rev. C in press. Nuclear PDF library is available at http://hs.phys.saga-u.ac.jp/nuclp.html",
  "journal": "Phys.Rev.C70:044905,2004",
  "doi": "10.1103/PhysRevC.70.044905",
  "categories": [
    "hep-ph",
    "hep-ex",
    "nucl-ex",
    "nucl-th"
  ],
  "abstract": "We analyze experimental data of nuclear structure-function ratios F_2^A/F_2^{A'} and Drell-Yan cross section ratios for obtaining optimum parton distribution functions (PDFs) in nuclei. Then, uncertainties of the nuclear PDFs are estimated by the Hessian method. Valence-quark distributions are determined by the F_2 data at large x; however, the small-x part is not obvious from the data. On the other hand, the antiquark distributions are determined well at x~0.01 from the F_2 data and at x~0.1 by the Drell-Yan data; however, the large-x behavior is not clear. Gluon distributions cannot be fixed by the present data and they have large uncertainties in the whole x region. Parametrization results are shown in comparison with the data. We provide a useful code for calculating nuclear PDFs at given x and Q^2.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2004-07-15T01:03:48.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.60.Hb",
      "24.85.+p",
      "12.38.-t",
      "25.30.-c"
    ],
    "keywords": [
      "nuclear parton distribution functions",
      "uncertainties",
      "drell-yan cross section ratios",
      "obtaining optimum parton distribution functions",
      "analyze experimental data"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. C"
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 647912
    }
  }
}