{
  "id": "hep-ph/9309328",
  "version": "v1",
  "published": "1993-09-27T18:23:44.000Z",
  "updated": "1993-09-27T18:23:44.000Z",
  "title": "On the $A$ dependence of $R = σ_L/σ_T$ and the $Q^2$ dependence of Shadowing",
  "authors": [
    "J. Milana"
  ],
  "comment": "10 pages + 2 Figures, DOE/ER/40762--019, UMPP \\#94--039",
  "journal": "Phys.Rev.C49:2820-2823,1994",
  "doi": "10.1103/PhysRevC.49.2820",
  "categories": [
    "hep-ph"
  ],
  "abstract": "A higher--twist nuclear enhancement of $R = \\sigma_L/\\sigma_T$, as might be expected to arise due to fermi motion and whose magnitude is within the error-bars of recent experiment, is shown to lead to a monotonic {\\it decrease} in the ratio of nuclear vs. nucleon cross--sections at small Bjorken $x$ for {\\it increasing} $Q^2$. This effect at small $x$, comparable in magnitude to those reported for shadowing, is driven mainly by kinematic factors and essentially vanishes for $x > .1$. Its unusual $Q^2$ dependence rather complicates the unravelling from present data in the shadowing region the corresponding dependence in $Q^2$ of the nuclear structure functions, $F_2^{A}(x,Q^2)$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1993-09-27T18:23:44.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "dependence",
      "higher-twist nuclear enhancement",
      "nuclear structure functions",
      "kinematic factors",
      "fermi motion"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. C"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 358919
    }
  }
}