{
  "id": "hep-ex/9803010",
  "version": "v1",
  "published": "1998-03-12T16:34:53.000Z",
  "updated": "1998-03-12T16:34:53.000Z",
  "title": "Measurement of the Mass Splittings between the $b\\bar{b}χ_{b,J}(1P)$ States",
  "authors": [
    "K. Edwards"
  ],
  "comment": "11 page postscript file, postscript file also available through http://w4.lns.cornell.edu/public/CLNS",
  "journal": "Phys.Rev.D59:032003,1999",
  "doi": "10.1103/PhysRevD.59.032003",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We present new measurements of photon energies and branching fractions for the radiative transitions: Upsilon(2S)->gamma+chi_b(J=0,1,2). The masses of the chi_b states are determined from the measured radiative photon energies. The ratio of mass splittings between the chi_b substates, r==(M[J=2]-M[J=1])/(M[J=1]-M[J=0]) with M the chi_b mass, provides information on the nature of the bbbar confining potential. We find r(1P)=0.54+/-0.02+/-0.02. This value is in conflict with the previous world average, but more consistent with the theoretical expectation that r(1P)<r(2P); i.e., that this mass splittings ratio is smaller for the chi_b(1P) triplet than for the chi_b(2P) triplet.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1998-03-12T16:34:53.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "measurement",
      "mass splittings ratio",
      "world average",
      "bbbar confining potential",
      "measured radiative photon energies"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 468097
    }
  }
}