Flavor-changing decays of the Z and Z prime gauge bosons in left-right-symmetric models

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.46.284· OSTI ID:7206096

Perez, M A ^[1]; Soriano, M A ^[2]

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1. Departamento de Fisica, Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Apartado Postal 14-740, 07000 Mexico, Distrito Federal (Mexico)
2. Facultad de Ciencias Fisico Matematicas, Universidad Autonoma de Puebla, Apartado Postal 1152, Puebla, Puebla, Mexico ( )

We study the flavor-changing decays of the {ital Z} and {ital Z}{prime} vector bosons of left-right-symmetric ({ital L}-{ital R}) models with a minimal Higgs potential. We find that the branching ratios for the decays {ital Z}{r arrow}{ital q}{sub {ital i}{bar q}{ital j}} in {ital L}-{ital R} models are given, up to terms of order ({ital m}{sub {ital W}{ital L}}{sup 2}/{ital m}{sub {ital W}{ital R}}{sup 2}), by the results already obtained in the standard model, and therefore too small to be measurable. The same behavior is expected for the decays {ital Z}{prime}{r arrow}{ital q}{sub {ital i}{bar q}{ital j}}. We find also that the low-energy bounds on the Majorana-Yukawa leptonic couplings of charged Higgs scalars impose severe constraints on the contributions of these scalars to the lepton-flavor-violating decays of the {ital Z} and {ital Z}{prime}. We conclude that the branching ratios of the latter decays can be appreciable only if the right-handed neutrinos are heavier than {ital W}{sub {ital R}}.

• OSTI ID: 7206096
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 46:1; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662120* -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662380 -- Decays of Intermediate Bosons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
BOSONS
BRANCHING RATIO
CHIRAL SYMMETRY
COMPOSITE MODELS
COUPLING CONSTANTS
CURRENTS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FLAVOR MODEL
GAUGE INVARIANCE
HADRONIC PARTICLE DECAY
HIGGS MODEL
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
INVARIANCE PRINCIPLES
LEPTONS
MATHEMATICAL MODELS
NEUTRAL CURRENTS
NUCLEAR POTENTIAL
PARTICLE DECAY
PARTICLE MODELS
POSTULATED PARTICLES
POTENTIALS
QUARK MODEL
QUARKS
STANDARD MODEL
SYMMETRY
SYMMETRY BREAKING
UNIFIED GAUGE MODELS
YUKAWA POTENTIAL
Z NEUTRAL BOSONS