Low energy effects of new interactions in the electroweak boson sector

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.2182· OSTI ID:6026342

Hagiwara, K ^[1]; Ishihara, S ^[2]; Szalapski, R; Zeppenfeld, D ^[3]

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1. KEK, Tsukuba, Ibaraki 305 (Japan)
2. Department of Physics, University of Tokyo, Tokyo 113 (Japan)
3. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)

Novel strong interactions in the electroweak bosonic sector are expected to induce effective interactions between the Higgs doublet field and the electroweak gauge bosons which lead to anomalous [ital WWZ] and [ital WW][gamma] vertices once the Higgs field acquires a vacuum expectation value. Using a linear realization of the Goldstone bosons, we consider a complete set of dimension-six operators which are SU(2)[times]U(1) gauge invariant and conserve [ital C] and [ital P]. This approach allows us to study effects of new physics which originates above 1 TeV and the Higgs boson mass dependence of the results can be investigated. Four of the dimension-six operators affect low energy and present CERN LEP experiments at the tree level. Another five influence neutral and charged current experiments at the one-loop level and three of these lead to anomalous [ital WWZ] and [ital WW][gamma] vertices. Their loop contributions are at most logarithmically divergent, and these logarithmic divergences can be understood as renormalizations of the four operators which contribute at the tree level. Constraints on the remaining five operators can be obtained if one assumes the absence of cancellations between the tree level and one-loop contributions. The resulting bounds on anomalous triple gauge boson couplings are modest, which emphasizes the importance of direct measurements of the triple gauge boson vertices, e.g., in [ital W][sup +][ital W[minus]] production at LEP II.

• DOE Contract Number: AC02-76ER00881
• OSTI ID: 6026342
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 48:5; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662210* -- Specific Theories & Interaction Models
662240 -- Models for Strong Interactions-- (1992-)
662440 -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BOSONS
C INVARIANCE
ELEMENTARY PARTICLES
GAUGE INVARIANCE
GOLDSTONE BOSONS
HIGGS BOSONS
INTERACTIONS
INTERMEDIATE BOSONS
INVARIANCE PRINCIPLES
MANY-DIMENSIONAL CALCULATIONS
MATHEMATICAL MODELS
P INVARIANCE
PARTICLE MODELS
POSTULATED PARTICLES
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
STANDARD MODEL
STRONG INTERACTIONS
SYMMETRY BREAKING
UNIFIED GAUGE MODELS