{
  "id": "hep-ex/0408102",
  "version": "v1",
  "published": "2004-08-22T10:51:49.000Z",
  "updated": "2004-08-22T10:51:49.000Z",
  "title": "Measurements of Branching Fractions and Polarization in B > K^* rho Decays",
  "authors": [
    "K. Abe",
    "for the Belle Collaboration"
  ],
  "comment": "11 pages, 4 figures, submitted to ICHEP04, Beijing, China",
  "journal": "Phys.Rev.Lett.95:141801,2005",
  "doi": "10.1103/PhysRevLett.95.141801",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We present results of a study of the charmless vector-vector decays B^0 -> K^{*0} rho^0 and B^+ ->K^{*0} rho^+. The results are based on a 140 fb^{-1} data sample collected by the Belle detector at the KEKB asymmetric e^+e^- collider. We obtain the branching fraction B(B^+ -> K^{*0} rho^+)=(6.6 +- 2.2(stat.) +- 0.8 (syst.)) x 10^{-6}, and set upper limits on the branching fractions B(B^0 -> K^{*0} rho^0)<2.6 x 10^{-6} and B(B^0 -> f_0(980) K^{*0})<5.2 x 10^{-6}. We also perform a helicity analysis of the rho and K^* vector mesons in the decay B^+ -> K^{*0} rho^+, and obtain the longitudinal polarization fraction R_0(B^+ -> K^{*0} rho^+)=0.50 +- 0.19(stat.)+0.05-0.07}(syst.).",
  "revisions": [
    {
      "version": "v1",
      "updated": "2004-08-22T10:51:49.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.39.St",
      "14.40.Nd",
      "13.25.Hw",
      "13.88.+e"
    ],
    "keywords": [
      "branching fraction",
      "rho decays",
      "measurements",
      "longitudinal polarization fraction",
      "set upper limits"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 657092
    }
  }
}