{
  "id": "1107.4351",
  "version": "v3",
  "published": "2011-07-21T19:48:50.000Z",
  "updated": "2013-01-22T15:06:52.000Z",
  "title": "$O(α_s)$ corrections to $J/ψ+χ_{cJ}$ production at $B$ factories",
  "authors": [
    "Hai-Rong Dong",
    "Feng Feng",
    "Yu Jia"
  ],
  "comment": "v3, 18+3 pages, 6 figures, 3 tables; some formulas corrected, erratum added",
  "journal": "JHEP 1110:141,2011",
  "doi": "10.1007/JHEP10(2011)141",
  "categories": [
    "hep-ph",
    "hep-ex"
  ],
  "abstract": "We investigate the ${\\cal O}(\\alpha_s)$ corrections to $e^+e^-\\to J/\\psi(\\psi')+\\chi_{cJ}$ ($J=0,1,2$) in the NRQCD factorization approach. These next-to-leading order (NLO) corrections are calculated at the level of helicity amplitude. We have made a detailed analysis for both polarized and unpolarized cross sections, and compared our predictions with the measurements at the $B$ factories. We also derive the asymptotic expressions for each of the NLO helicity amplitudes, and confirm the earlier speculation that at NLO in $\\alpha_s$, the double logarithm of type $\\ln^2 (s/m_c^2)$ appearing in the NRQCD short-distance coefficient is always associated with the helicity-suppressed channels.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2013-01-22T15:06:52.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.88.+e",
      "14.40.Pq",
      "13.66.Bc",
      "12.38.Bx"
    ],
    "keywords": [
      "corrections",
      "production",
      "nrqcd factorization approach",
      "nlo helicity amplitudes",
      "nrqcd short-distance coefficient"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Springer",
      "journal": "Journal of High Energy Physics",
      "year": 2011,
      "month": "Oct",
      "volume": 2011,
      "pages": 141
    },
    "note": {
      "typesetting": "TeX",
      "pages": 3,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 919399,
      "adsabs": "2011JHEP...10..141D"
    }
  }
}