Two-photon decay width of the Higgs boson in left-right-symmetric theories
- 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), Vol. 40:5; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HIGGS BOSONS
RADIATIVE DECAY
CHIRAL SYMMETRY
PARTICLE MODELS
PARTICLE WIDTHS
PHOTONS
STANDARD MODEL
ELEMENTARY PARTICLES
MASSLESS PARTICLES
MATHEMATICAL MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
SYMMETRY
UNIFIED GAUGE MODELS
645202* - High Energy Physics- Particle Interactions & Properties-Theoretical- Electromagnetic Interactions & Properties
645300 - High Energy Physics- Particle Invariance Principles & Symmetries