QCD corrections to the [ital t][r arrow][ital H][sup +][ital b] decay within the minimal supersymmetric standard model

Journal Article · Thu Sep 01 04:00:00 EDT 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.50.3310· OSTI ID:7253089

Koenig, H ^[1]

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1. Departement de Physique, Universite du Quebec a Montreal, C.P. 8888, Succ. Centre Ville, Montreal, Quebec, H3C 3P8 (Canada)

I present the contribution of gluinos and scalar quarks to the decay rate of the top quark into a charged Higgs boson and a bottom quark within the minimal supersymmetric standard model, including the mixing of the scalar partners of the left- and right-handed top quarks. I show that for certain values of the supersymmetric parameters the standard QCD loop corrections to this decay mode are diminished or enhanced by several 10%. I show that not only a small value of 3 GeV for the gluino mass (small mass window) but also much larger values of several hundreds of GeV's have a non-negligible effect on this decay rate, against general belief. Last but not least, if the ratio of the vacuum expectation values of the Higgs bosons is taken in the limit of [ital v][sub 1][much lt][ital v][sub 2] I obtain a drastic enhancement due to a tan[beta] dependence in the couplings.

• OSTI ID: 7253089
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 50:5; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

Related Subjects

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662230 -- Quantum Chromodynamics-- (1992-)
662440* -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BEAUTY PARTICLES
CHARGED PARTICLES
CORRECTIONS
COUPLING
DECAY
ELEMENTARY PARTICLES
EXPECTATION VALUE
FIELD THEORIES
HIGGS BOSONS
MATHEMATICAL MODELS
MIXING
PARTICLE DECAY
PARTICLE MODELS
POSTULATED PARTICLES
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
STANDARD MODEL
SUPERSYMMETRY
SYMMETRY
TOP PARTICLES
UNIFIED GAUGE MODELS
VACUUM STATES