Stability of electroweak strings

Journal Article · Tue Dec 15 04:00:00 EST 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.46.R5232· OSTI ID:6892663

James, M ^[1]; Perivolaropoulos, L ^[2]; Vachaspati, T ^[3]

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1. Department of Applied Mathematics and Theoretical Physics, Silver Street, University of Cambridge, Cambridge, CB39EW (United Kingdom)
2. Division of Theoretical Astrophysics, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138 (United States)
3. Tufts Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155 (United States)

We map the parameter space that leads to stable [ital Z] vortices in the electroweak model. For sin[sup 2][theta][sub [ital W]]=0.23, we find that the strings are unstable for a Higgs-boson mass larger than 24 GeV. Given the latest constraints on the Higgs-boson mass from the CERN [ital e][sup +][ital e[minus]] collider LEP, this shows that, if the standard electroweak model is realized in nature, the [ital Z] vortex (in the bare model) is unstable.

• OSTI ID: 6892663
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 46:12; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662110 -- General Theory of Particles & Fields-- Theory of Fields & Strings-- (1992-)
662210* -- Specific Theories & Interaction Models
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
COMPOSITE MODELS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FIELD THEORIES
HIGGS BOSONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEPTON-LEPTON INTERACTIONS
MASS
MATHEMATICAL MODELS
PARAMETRIC ANALYSIS
PARTICLE INTERACTIONS
PARTICLE MODELS
POSTULATED PARTICLES
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
QUARK MODEL
STABILITY
STRING MODELS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
WEINBERG-SALAM GAUGE MODEL
Z NEUTRAL BOSONS