An alternative to perturbative grand unification: How asymptotically non-free theorues can successfully predict low-energy gauge couplings

N. Cabbibo, G. R. Farrar

    Research output: Contribution to journalArticle

    Abstract

    We develop a scenario originally proposed by Maiani, Parisi and Petrozio in which gauge interactions are not asymptotically free, and yet the theory is unified in that all gauge couplings are assumed to become large at a common energy scale. Taking this scale to be the Planck mass, 2 × 1019 GeV, and calculating to two-loop accuracy, we find α em (300 GeV)= 1 37, sin2θw = 0.22 and αQCD (300 GeV) = 0.08, assuming supersymmetric SU(3) × SU(2) × U(1) and five matter generations.

    Original languageEnglish (US)
    Pages (from-to)107-110
    Number of pages4
    JournalPhysics Letters B
    Volume110
    Issue number2
    DOIs
    StatePublished - Mar 25 1982

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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