Quantum electrodynamical cross-section formula from photon mass and dimensional regularization

Nicolas Papanicolaou, Daniel Zwanziger

    Research output: Contribution to journalArticle

    Abstract

    Exact cross section formulae for quantum electrodynamical processes are derived in terms of an infrared regulating measure, which explicitly segregates the real infrared divergence. It also yields a simple prescription for the removal of the virtual infrared divergence, which we discuss in the context of two different regularization schemes: the traditional photon-mass regularization and the recently developed dimensional regularization. Comparison with the coherent state formulation of quantum electrodynamics establishes the equivalence of the two approaches at the cross-section level.

    Original languageEnglish (US)
    Pages (from-to)77-94
    Number of pages18
    JournalNuclear Physics, Section B
    Volume101
    Issue number1
    DOIs
    StatePublished - Dec 22 1975

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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