Dispersion relations and finite-size effects in high-energy electroweak interactions

Massimo Porrati

    Research output: Contribution to journalArticle


    Dispersion relations between the forward elastic scattering amplitude and the total inclusive cross section are shown to hold for (B + L)-violating instanton-induced interactions in the electroweak sector of the Standard Model and in the two-dimensional abelian Higgs model. The result is due to instanton-anti-instanton interactions, which are evaluated in the framework of the dilute instanton approximation. Within that framework finite instanton-size corrections are considered, and it is shown that their effect is not sufficient to suppress multiple gauge vector or Higgs scalar production below the threshold E0 ≈ MHW. These processes may be sensitive to deviations from the dilute gas approximation.

    Original languageEnglish (US)
    Pages (from-to)371-393
    Number of pages23
    JournalNuclear Physics, Section B
    Issue number1-2
    Publication statusPublished - Dec 24 1990


    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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