{
  "id": "nucl-th/0611018",
  "version": "v2",
  "published": "2006-11-07T10:20:11.000Z",
  "updated": "2007-06-12T02:51:16.000Z",
  "title": "Hadronic parity violation in $\\vec{n} p \\to d γ$ with effective field theory",
  "authors": [
    "C. H. Hyun",
    "S. Ando",
    "B. Desplanques"
  ],
  "comment": "Minor changes in the text. To appear in PLB",
  "journal": "Phys.Lett.B651:257-262,2007",
  "doi": "10.1016/j.physletb.2007.06.011",
  "categories": [
    "nucl-th",
    "hep-ph"
  ],
  "abstract": "The parity-violating nucleon-nucleon (NN) potential is considered up to next-to-next-to leading order in heavy-baryon chiral perturbation theory. We include one-pion exchange at leading order and the two-pion exchange and two-nucleon contact terms at next-to-next-to-leading order. The effects of intermediate (two-pion exchange) and short-range (two-nucleon contact) terms are probed by calculating the photon asymmetry $A_\\gamma$ in $\\vec{n} p \\to d \\gamma$ employing Siegert's theorem and an accurate phenomenological potential for the parity-conserving NN interaction. We explore in detail the uncertainties due to the parameters that control the contribution of the short-range interaction. We obtain about 20% uncertainty in the value of $A_\\gamma$ up to the next-to-next-to leading order. We discuss the implication of this uncertainty for the determination of the weak pion-nucleon coupling constant and how the uncertainty can be reduced.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2007-06-12T02:51:16.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.15.Ji",
      "21.30.Fe"
    ],
    "keywords": [
      "hadronic parity violation",
      "effective field theory",
      "next-to-next-to leading order",
      "uncertainty",
      "two-pion exchange"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 731139
    }
  }
}