How to calculate 35 640 O(α5) Feynman diagrams in less than an hour

Glennys R. Farrar, Filippo Neri

    Research output: Contribution to journalArticlepeer-review


    We present a powerful method for evaluating Feynman amplitudes involving fermions which interact through gauge bosons. Implementing our procedure on a computer, we have evaluated the O(αs4) and O(αs5) five- and six-quark scattering amplitudes required to predict exclusive hadron scattering amplitudes in QCD.

    Original languageEnglish (US)
    Pages (from-to)109-114
    Number of pages6
    JournalPhysics Letters B
    Issue number1-2
    StatePublished - Oct 13 1983

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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