The Last of the Finite Loop Amplitudes in QCD Metadata

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  • Main Title The Last of the Finite Loop Amplitudes in QCD


  • Author: Bern, Zvi
    Creator Type: Personal
  • Author: Dixon, Lance J.
    Creator Type: Personal
  • Author: Kosower, David A.
    Creator Type: Personal


  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization


  • Name: Stanford Linear Accelerator Center
    Place of Publication: [Menlo Park, California]
    Additional Info: SLAC


  • Creation: 2005-05-31


  • English


  • Content Description: We use on-shell recursion relations to determine the one-loop QCD scattering amplitudes with a massless external quark pair and an arbitrary number (n - 2) of positive-helicity gluons. These amplitudes are the last of the unknown infrared- and ultraviolet-finite loop amplitudes of QCD. The recursion relations are similar to ones applied at tree level, but contain new non-trivial features corresponding to poles present for complex momentum arguments but absent for real momenta. We present the relations and the compact solutions to them, valid for all n. We also present compact forms for the previously-computed one-loop n-gluon amplitudes with a single negative helicity and the rest positive helicity.
  • Physical Description: 45 pages


  • Keyword: Quantum Chromodynamics
  • Keyword: Amplitudes
  • Keyword: Gluons
  • Keyword: Quarks
  • Keyword: Trees Phenomenology-Hep,Hepph, Hepth, Math
  • Keyword: Phenomenology-Hep,Hepph, Hepth, Math
  • STI Subject Categories: 71 Classical And Quantum Mechanics, General Physics
  • Keyword: Scattering Amplitudes
  • Keyword: Recursion Relations
  • Keyword: Helicity
  • STI Subject Categories: 72 Physics Of Elementary Particles And Fields


  • Journal Name: Phys.Rev.D72:125003,2005


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article


  • Text


  • Report No.: SLAC-PUB-11134
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 890814
  • Archival Resource Key: ark:/67531/metadc873114


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