Heavy-Z-boson decays to two bosons in E/sub 6/ superstring models

Journal Article · Tue Dec 01 04:00:00 EST 1987 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.36.3429· OSTI ID:5711712

Barger, V; Whisnant, K

We evaluate the decays of a heavy neutral gauge boson Z/sub 2/ into W/sup +/W/sup -/, the Z and a Higgs boson, or two Higgs bosons in superstring-inspired electroweak models with an extra U(1) gauge group, two Higgs doublets, and a Higgs singlet. The branching ratios for these processes are generally similar and two-boson decay modes of Z/sub 2/ must exist at the few-percent level if kinematically accessible, although the bosonic modes which dominate in any given scenario depend on the U(1) quantum numbers and mixing in the Higgs sector. Lower bounds on the Z/sub 2/ mass versus the Z,Z' mixing are discussed; for the no-scale superstring model, M/sub Z//sub =/ must be above 550 GeV.

• Research Organization: Physics Department, University of Wisconsin, Madison, Wisconsin 53706
• OSTI ID: 5711712
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 36:11; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645300* -- High Energy Physics-- Particle Invariance Principles & Symmetries
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BRANCHING RATIO
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FIELD THEORIES
FUNCTIONS
GAUGE INVARIANCE
HIGGS BOSONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
INVARIANCE PRINCIPLES
LAGRANGIAN FUNCTION
LIE GROUPS
MATHEMATICAL MODELS
PARTICLE MODELS
PARTICLE PRODUCTION
POSTULATED PARTICLES
QUANTUM NUMBERS
QUARK MODEL
RENORMALIZATION
STRING MODELS
SU GROUPS
SU-2 GROUPS
SUPERSYMMETRY
SYMMETRY
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
WEINBERG-SALAM GAUGE MODEL
Z NEUTRAL BOSONS