{
  "id": "0810.4116",
  "version": "v3",
  "published": "2008-10-22T17:27:13.000Z",
  "updated": "2009-05-22T17:53:47.000Z",
  "title": "Angular Dependence of Jet Quenching Indicates Its Strong Enhancement Near the QCD Phase Transition",
  "authors": [
    "Jinfeng Liao",
    "Edward Shuryak"
  ],
  "comment": "4 pages, 4 figures. Final version published as PRL102,202302(2009)",
  "journal": "Phys.Rev.Lett.102:202302,2009",
  "doi": "10.1103/PhysRevLett.102.202302",
  "categories": [
    "nucl-th",
    "hep-ph",
    "nucl-ex"
  ],
  "abstract": "We study dependence of jet quenching on matter density, using \"tomography\" of the fireball provided by RHIC data on azimuthal anisotropy $v_2$ of high $p_t$ hadron yield at different centralities. Slicing the fireball into shells with constant (entropy) density, we derive a \"layer-wise geometrical limit\" $v_2^{max}$ which is indeed above the data $v_2<v_2^{max}$. Interestingly, the limit is reached only if quenching is dominated by shells with the entropy density exactly in the near-$T_c$ region. We show two models that simultaneously describe the high $p_t$ $v_2$ and $R_{AA}$ data and conclude that such a description can be achieved only if the jet quenching is few times stronger in the near-$T_c$ region relative to QGP at $T>T_c$. One possible reason for that may be recent indications that the near-$T_c$ region is a magnetic plasma of relatively light color-magnetic monopoles.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2009-05-22T17:53:47.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.38.Mh",
      "25.75.-q"
    ],
    "keywords": [
      "qcd phase transition",
      "jet quenching",
      "angular dependence",
      "strong enhancement",
      "relatively light color-magnetic monopoles"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2009,
      "month": "May",
      "volume": 102,
      "number": 20,
      "pages": 202302
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 800347,
      "adsabs": "2009PhRvL.102t2302L"
    }
  }
}