{
  "id": "1303.3124",
  "version": "v3",
  "published": "2013-03-13T10:38:38.000Z",
  "updated": "2013-05-13T08:12:10.000Z",
  "title": "The proton-proton weak capture in chiral effective field theory",
  "authors": [
    "L. E. Marcucci",
    "R. Schiavilla",
    "M. Viviani"
  ],
  "comment": "4 pages, 3 figures; revisited version accepted for publication on Phys. Rev. Lett. A misprint in Table II has been corrected",
  "journal": "Phys. Rev. Lett. 110, 192503 (2013)",
  "doi": "10.1103/PhysRevLett.110.192503",
  "categories": [
    "nucl-th"
  ],
  "abstract": "The astrophysical S-factor for proton-proton weak capture is calculated in chiral effective field theory over the center-of-mass relative-energy range 0--100 keV. The chiral two-nucleon potential derived up to next-to-next-to-next-to leading order is augmented by the full electromagnetic interaction including, beyond Coulomb, two-photon and vacuum-polarization corrections. The low-energy constants (LEC's) entering the weak current operators are fixed so as to reproduce the A=3 binding energies and magnetic moments, and the Gamow-Teller matrix element in tritium beta decay. Contributions from S and P partial waves in the incoming two-proton channel are retained. The S-factor at zero energy is found to be S(0)=(4.030 +/- 0.006) x 10^{-23} MeV fm^2, with a P-wave contribution of 0.020 x 10^{-23} MeV fm^2. The theoretical uncertainty is due to the fitting procedure of the LEC's and to the cutoff dependence.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2013-05-13T08:12:10.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "25.10.+s",
      "26.20.Cd",
      "21.30.Fe"
    ],
    "keywords": [
      "chiral effective field theory",
      "proton-proton weak capture",
      "gamow-teller matrix element",
      "center-of-mass relative-energy range",
      "weak current operators"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2013,
      "month": "May",
      "volume": 110,
      "number": 19,
      "pages": 192503
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1223657,
      "adsabs": "2013PhRvL.110s2503M"
    }
  }
}