{
  "id": "0708.2461",
  "version": "v2",
  "published": "2007-08-18T04:18:23.000Z",
  "updated": "2008-05-15T10:38:52.000Z",
  "title": "The $e^+ e^-\\to 2(π^+π^-)π^0$, 2(π^+π^-)η$, $K^+ K^-π^+π^-π^0$ and $K^+ K^-π^+π^-η$ Cross Sections Measured with Initial-State Radiation",
  "authors": [
    "The BABAR Collaboration",
    "B. Aubert"
  ],
  "comment": "30 pages, 43 postscript figures, submitted to Phys.Rev.D",
  "journal": "Phys.Rev.D76:092005,2007; Erratum-ibid.D77:119902,2008",
  "doi": "10.1103/PhysRevD.76.092005",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We study the processes $e^+ e^-\\to 2(\\pi^+\\pi^-)\\pi^0\\gamma$, $2(\\pi^+\\pi^-)\\eta\\gamma$, $K^+ K^-\\pi^+\\pi^-\\pi^0\\gamma$ and $K^+ K^-\\pi^+\\pi^-\\eta\\gamma$ with the hard photon radiated from the initial state. About 20000, 4300, 5500 and 375 fully reconstructed events, respectively, are selected from 232 fb$^{-1}$ of BaBar data. The invariant mass of the hadronic final state defines the effective $e^+ e^-$ center-of-mass energy, so that the obtained cross sections from the threshold to about 5 GeV can be compared with corresponding direct \\epem measurements, currently available only for the $\\eta\\pi^+\\pi^-$ and $\\omega\\pi^+\\pi^-$ submodes of the $e^+ e^-\\to 2(\\pi^+\\pi^-)\\pi^0$ channel. Studying the structure of these events, we find contributions from a number of intermediate states, and we extract their cross sections where possible. In particular, we isolate the contribution from $e^+ e^-\\to\\omega(782)\\pi^+\\pi^-$ and study the $\\omega(1420)$ and $\\omega(1650)$ resonances. In the charmonium region, we observe the $J/\\psi$ in all these final states and several intermediate states, as well as the $\\psi(2S)$ in some modes, and we measure the corresponding branching fractions.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2008-05-15T10:38:52.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.25.Jx",
      "14.40.Cs",
      "13.25.Gv",
      "13.66.Bc"
    ],
    "keywords": [
      "cross sections",
      "initial-state radiation",
      "intermediate states",
      "hadronic final state defines",
      "charmonium region"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2007,
      "month": "Nov",
      "volume": 76,
      "number": 9,
      "pages": "092005"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 30,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 758568,
      "adsabs": "2007PhRvD..76i2005A"
    }
  }
}