Topologically Stable Z - Strings in the Supersymmetric Standard Model

Details Topologically Stable Z - Strings in the Supersymmetric Standard Model Topologically Stable Z - Strings in the Supersymmetric Standard Model

1994-03-11

arxiv.org/abs/hep-ph/9403277v1

Phys.Lett. B331 (1994) 63-68

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 17 pages, IC/94/56

Scientific paper

10.1016/0370-2693(94)90943-1

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.

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