{
  "id": "0806.1422",
  "version": "v1",
  "published": "2008-06-09T10:57:29.000Z",
  "updated": "2008-06-09T10:57:29.000Z",
  "title": "The classical field created in early stages of high energy nucleus-nucleus collisions",
  "authors": [
    "Jean-Paul Blaizot",
    "Yacine Mehtar-Tani"
  ],
  "comment": "26 pages, 3 figures",
  "journal": "Nucl.Phys.A818:97-119,2009",
  "doi": "10.1016/j.nuclphysa.2008.11.010",
  "categories": [
    "hep-ph",
    "nucl-th"
  ],
  "abstract": "We show that a special choice of light-cone gauge can greatly simplify the calculation of the classical color field created in the initial stages of nucleus-nucleus collisions. Within this gauge, we can in particular construct explicitly the conserved color current and calculate exactly the gauge field immediately after the collision. This field is used as a boundary condition in an iterative solution of the Yang-Mills equations in the forward light-cone. In leading order, which corresponds to a linearization of the Yang-Mills equation in the forward light-cone, we obtain a simple formula for the spectrum of gluons produced in nucleus-nucleus collisions. This formula reproduces exactly the known formula for proton-nucleus collisions, where $k_t-$factorization is recovered, while the latter property apparently breaks down in the case of nucleus-nucleus collisions.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2008-06-09T10:57:29.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "24.85.+p",
      "25.75.-q",
      "12.38.Mh"
    ],
    "keywords": [
      "high energy nucleus-nucleus collisions",
      "classical field",
      "early stages",
      "yang-mills equation",
      "forward light-cone"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Elsevier",
      "journal": "Nuclear Physics A",
      "year": 2009,
      "month": "Feb",
      "volume": 818,
      "number": 1,
      "pages": 97
    },
    "note": {
      "typesetting": "TeX",
      "pages": 26,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 787668,
      "adsabs": "2009NuPhA.818...97B"
    }
  }
}