{
  "id": "1304.3403",
  "version": "v3",
  "published": "2013-04-11T19:23:12.000Z",
  "updated": "2013-05-31T15:22:52.000Z",
  "title": "Initial state geometry and the role of hydrodynamics in proton-proton, proton-nucleus and deuteron-nucleus collisions",
  "authors": [
    "Adam Bzdak",
    "Bjoern Schenke",
    "Prithwish Tribedy",
    "Raju Venugopalan"
  ],
  "comment": "11 pages, 14 figures, figure 4 replaced, comments added, typos corrected",
  "doi": "10.1103/PhysRevC.87.064906",
  "categories": [
    "nucl-th",
    "hep-ph",
    "nucl-ex"
  ],
  "abstract": "We apply the successful Monte Carlo Glauber and IP-Glasma initial state models of heavy ion collisions to the much smaller size systems produced in proton-proton, proton-nucleus and deuteron- nucleus collisions. We observe a significantly greater sensitivity of the initial state geometry to details of multi-particle production in these models compared to nucleus-nucleus collisions. In particular, we find that the size of the system produced in p+A collisions is very similar to the one produced in p+p collisions, and predict comparable Hanbury-Brown-Twiss radii in the absence of flow in both systems. Differences in the eccentricities computed in the models are large, while differences amongst the generated flow coefficients v_2 and v_3 are smaller. For a large number of participants in proton-lead collisions, the v_2 generated in the IP-Glasma model is comparable to the value obtained in proton-proton collisions. Viscous corrections to flow are large over characteristic lifetimes in the smaller size systems. In contrast, viscous contributions are significantly diminished over the longer space-time evolution of a heavy ion collision.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2013-05-31T15:22:52.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "25.40.Ep",
      "25.45.De",
      "13.85.Hd",
      "25.75.Ld"
    ],
    "keywords": [
      "initial state geometry",
      "deuteron-nucleus collisions",
      "heavy ion collision",
      "proton-proton",
      "proton-nucleus"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review C",
      "year": 2013,
      "month": "Jun",
      "volume": 87,
      "number": 6,
      "pages": "064906"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1227953,
      "adsabs": "2013PhRvC..87f4906B"
    }
  }
}