DETAILED STABILITY ANALYSIS OF ELECTROWEAK STRINGS

Authors
JAMES M PERIVOLAROPOULOS L VACHASPATI T
Citation
M. James et al., DETAILED STABILITY ANALYSIS OF ELECTROWEAK STRINGS, Nuclear physics. B, 395(3), 1993, pp. 534-546
Citations number
15
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. B → ACNP
ISSN journal
05503213
Volume
395
Issue
3
Year of publication
1993
Pages
534 - 546
Database
ISI
SICI code
0550-3213(1993)395:3<534:DSAOES>2.0.ZU;2-N
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 sin2theta(W) = 0.23, we find that the string s are unstable for a Higgs mass larger than 23 GeV. Given the latest c onstraints on the Higgs mass from LEP, this shows that, if the standar d electroweak model is realized in nature, the existing vortex solutio ns are unstable.