Detailed Stability Analysis of Electroweak Strings

Margaret James; Leandros Perivolaropoulos; Tanmay Vachaspati

doi:10.1016/0550-3213(93)90046-R

Detailed Stability Analysis of Electroweak Strings

High Energy Physics - Phenomenology 2009-10-22 v1

Authors: Margaret James , Leandros Perivolaropoulos , Tanmay Vachaspati

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Abstract

We give a detailed stability analysis of the Z-string in the standard electroweak model. We identify the mode that determines the stability of the string and numerically map the region of parameter space where the string is stable. For $\sin^2 \theta_W = 0.23$ , we find that the strings are unstable for a Higgs mass larger than 23GeV. Given the latest constraints on the Higgs mass from LEP, this shows that, if the standard electroweak model is realized in Nature, the existing vortex solutions are unstable.

Keywords

electroweak symmetry breaking string theory

Cite

@article{arxiv.hep-ph/9212301,
  title  = {Detailed Stability Analysis of Electroweak Strings},
  author = {Margaret James and Leandros Perivolaropoulos and Tanmay Vachaspati},
  journal= {arXiv preprint arXiv:hep-ph/9212301},
  year   = {2009}
}

Comments

18 pages plus one figure (not included but available upon request). To appear in Nuclear Physics B

Detailed Stability Analysis of Electroweak Strings

Abstract

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