{
  "id": "0801.4575",
  "version": "v2",
  "published": "2008-01-29T22:13:29.000Z",
  "updated": "2008-01-31T17:17:39.000Z",
  "title": "Analyzing power in elastic scattering of the electrons off a spin-0 target",
  "authors": [
    "Mikhail Gorchtein",
    "Charles J. Horowitz"
  ],
  "comment": "6 pages, 8 figure, one table; submitted to Phys.Rev.C; one figure corrrected",
  "journal": "Phys.Rev.C77:044606,2008",
  "doi": "10.1103/PhysRevC.77.044606",
  "categories": [
    "nucl-th",
    "nucl-ex"
  ],
  "abstract": "We consider the analyzing power on a spin-0 nuclear target. This observable is related to the imaginary part of the two-photon-exchange (box) diagram. We consider the contributions of elastic and inelastic intermediate states. The former requires knowledge of the elastic nuclear form factor, while the latter uses the optical theorem as input. The elastic contribution scales as the nuclear charge $Z$, while the inelastic contribution as the ratio of the atomic number and nuclear charge, $A/Z$. We provide estimates for $^4$He and $^{208}$Pb, in the kinematics of existing or upcoming experiments. In both cases, we predict negative values of a few parts per million, and the dominant contribution is due to inelastic contributions. The analyzing power can contribute a substantial systematic error in parity-violating experiments.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2008-01-31T17:17:39.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "21.10.Ft",
      "25.30.Bf",
      "25.30.Fj",
      "27.10.+h"
    ],
    "keywords": [
      "analyzing power",
      "elastic scattering",
      "elastic nuclear form factor",
      "nuclear charge",
      "inelastic contribution"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review C",
      "year": 2008,
      "month": "Apr",
      "volume": 77,
      "number": 4,
      "pages": "044606"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 778420,
      "adsabs": "2008PhRvC..77d4606G"
    }
  }
}