Two-photon decay width of the Higgs boson in left-right-symmetric theories

Journal Article · Fri Sep 01 00:00:00 EDT 1989 · Physical Review (Section) D: Particles and Fields; (USA)

DOI:https://doi.org/10.1103/PhysRevD.40.1722· OSTI ID:5396711

Martriaanez, R; Perez, M A; Toscano, J J ^[1]

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1. Departamento de Fisica, Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico National, Apartado Postal 14-740, 07000 Mexico, Distrito Federal, Mexico (MX)

We calculate the {ital W}{sub {ital R}} contribution to the two-photon decay width of the light neutral Higgs boson {ital H}{sub 1}{sup 0} in left-right-symmetric models. We find that this contribution is suppressed relative to the standard-model (SM) {ital W}{sub {ital L}} contribution by a factor ({ital M}{sub {ital L}}/M{sub R}){sup 4}. This result arises because the {ital W}{sub {ital R}} coupling to {ital H}{sub 1}{sup 0} is not proportional to its own mass {ital M}{sub {ital R}}, as a SM-like coupling would suggest, but rather to the lighter mass {ital M}{sub {ital L}}. As a consequence, {Gamma}({ital H}{sub 1}{sup 0}{r arrow}{gamma}{gamma}) in left-right-symmetric theories has essentially the same value as in the standard model.

• OSTI ID: 5396711
• Journal Information: Physical Review (Section) D: Particles and Fields; (USA), Journal Name: Physical Review (Section) D: Particles and Fields; (USA) Vol. 40:5; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645300 -- High Energy Physics-- Particle Invariance Principles & Symmetries
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRAL SYMMETRY
ELEMENTARY PARTICLES
HIGGS BOSONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
PARTICLE MODELS
PARTICLE PROPERTIES
PARTICLE WIDTHS
PHOTONS
POSTULATED PARTICLES
RADIATIVE DECAY
STANDARD MODEL
SYMMETRY
UNIFIED GAUGE MODELS