Constraints on Higgs-boson masses in E sub 6 models from CERN LEP experiments

Journal Article · Sun Jul 01 04:00:00 EDT 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.42.138· OSTI ID:6642400

Barger, V ^[1]; Whisnant, K ^[2]

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1. Physics Department, University of Wisconsin, Madison, Wisconsin 53706 (USA)
2. Physics Department Ames Laboratory, Iowa State University, Ames, IA (USA)

We examine how CERN LEP experimental limits on {ital Z}{r arrow}{ital hf{bar f}} and {ital Z}{r arrow}{ital hA} decays constrain E{sub 6} multi-Higgs-boson models. We show that the limits on standard and supersymmetric Higgs bosons are easily applied to a multi-Higgs-boson model if it acts like an effective two-doublet model at the {ital W}-{ital Z} mass scale. In the large-{ital M}{sub {ital Z}2} limit of the alternative left-right E{sub 6} model the lightest Higgs-scalar mass {ital m}{sub {ital h}} must be above 20 GeV (assuming {ital m}{sub {ital h}}{gt}2{ital m}{sub {mu}}); also tan{beta}={ital v}{sub 2}/{ital v}{sub 1} less than 0.58 is excluded. In the minimal rank-5 E{sub 6} model there are no absolute limits on individual parameters, although substantial regions of {ital m}{sub {ital h}}, {ital m}{sub {ital A}}, and {ital m}{sub {ital H}}{sup {plus minus}} versus tan{beta} are excluded. We indicate the improvements in the Higgs-boson mass bounds that may be achieved with increased statistics.

• DOE Contract Number: AC02-76ER00881
• OSTI ID: 6642400
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 42:1; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BARYON-BARYON INTERACTIONS
BOSONS
COMPOSITE MODELS
CYCLIC ACCELERATORS
DECAY
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FERMILAB TEVATRON
FUNCTIONS
HADRON-HADRON INTERACTIONS
HIGGS BOSONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
ISOSPIN
LAGRANGIAN FUNCTION
LEP STORAGE RINGS
LEPTON-LEPTON INTERACTIONS
LIE GROUPS
MASS
MATHEMATICAL MODELS
NUCLEAR POTENTIAL
NUCLEON-ANTINUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
POTENTIALS
PROTON-ANTIPROTON INTERACTIONS
QUARK MODEL
STORAGE RINGS
STRING MODELS
SU GROUPS
SU-2 GROUPS
SUPERSYMMETRY
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS
SYNCHROTRONS
YUKAWA POTENTIAL
Z NEUTRAL BOSONS