Topologically stable Z-strings in the supersymmetric standard model

G. Dvali, Goran Senjanović

    Research output: Contribution to journalArticlepeer-review


    We show that the minimal supergravity extension of the standard model automatically contains topologically stable electroweak strings if the hidden sector is invariant under the exact R-symmetry. These defects appear in the form of the semiglobal R-strings, which necessarily carry Z-flux inside their core. This result is independent from the particular structure of the hidden sector. Discussed strings differ fundamentally from the embedded Z-strings. If R-symmetry is explicitly broken (e.g. due to an anomaly), the decay of the semiglobal strings may have important implications for the baryogenesis.

    Original languageEnglish (US)
    Pages (from-to)63-68
    Number of pages6
    JournalPhysics Letters B
    Issue number1-2
    StatePublished - Jun 30 1994

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics


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