TY - JOUR
T1 - Topologically stable Z-strings in the supersymmetric standard model
AU - Dvali, G.
AU - Senjanović, Goran
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1994/6/30
Y1 - 1994/6/30
N2 - 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.
AB - 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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U2 - 10.1016/0370-2693(94)90943-1
DO - 10.1016/0370-2693(94)90943-1
M3 - Article
AN - SCOPUS:0011604318
VL - 331
SP - 63
EP - 68
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 1-2
ER -