{
  "id": "hep-ph/9902375",
  "version": "v1",
  "published": "1999-02-17T14:31:27.000Z",
  "updated": "1999-02-17T14:31:27.000Z",
  "title": "Baryon Distribution Amplitudes in QCD",
  "authors": [
    "V. M. Braun",
    "S. E. Derkachov",
    "G. P. Korchemsky",
    "A. N. Manashov"
  ],
  "comment": "75 pages, LaTeX style, 18 figures embedded with epsf.sty",
  "journal": "Nucl.Phys. B553 (1999) 355-426",
  "doi": "10.1016/S0550-3213(99)00265-5",
  "categories": [
    "hep-ph",
    "nlin.SI",
    "solv-int"
  ],
  "abstract": "We develop a new theoretical framework for the description of leading twist light-cone baryon distribution amplitudes which is based on integrability of the helicity $\\lambda=3/2$ evolution equation to leading logarithmic accuracy. A physical interpretation is that one can identify a new `hidden' quantum number which distinguishes components in the $\\lambda=3/2$ distribution amplitudes with different scale dependence. The solution of the corresponding evolution equation is reduced to a simple three-term recurrence relation. The exact analytic solution is found for the component with the lowest anomalous dimension for all moments $N$, and the WKB-type expansion is constructed for other levels, which becomes asymptotically exact at large $N$. Evolution equations for the $\\lambda=1/2$ distribution amplitudes (e.g. for the nucleon) are studied as well. We find that the two lowest anomalous dimensions for the $\\lambda=1/2$ operators (one for each parity) are separated from the rest of the spectrum by a finite `mass gap'. These special states can be interpreted as scalar diquarks.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1999-02-17T14:31:27.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "evolution equation",
      "lowest anomalous dimension",
      "twist light-cone baryon distribution amplitudes",
      "leading twist light-cone baryon distribution",
      "simple three-term recurrence relation"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Elsevier",
      "journal": "Nucl. Phys. B"
    },
    "note": {
      "typesetting": "LaTeX",
      "pages": 75,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 495439
    }
  }
}