QCD corrections to the decay H+ → tb̄ in the minimal supersymmetric standard model

A. Bartl; H. Eberl; K. Hidaka; T. Kon; W. Majerotto; Y. Yamada

doi:10.1016/0370-2693(96)00388-7

QCD corrections to the decay H⁺ → tb̄ in the minimal supersymmetric standard model

A. Bartl, H. Eberl, K. Hidaka, T. Kon, W. Majerotto, Y. Yamada

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

Abstract

We present a complete calculation of the script O sign(α_s) QCD corrections to the width of the decay H⁺ → tb̄ within the Minimal Supersymmetric Standard Model. We find that the QCD corrections are quite important, and that the supersymmetric QCD corrections (due to gluino, t̃ and b̃ exchange) can be comparable to or even larger than the standard QCD corrections in a large region of the supersymmetric parameter space. This is mainly due to the effect of large left-right mixings of stop (t̃) and sbottom (b̃). This could significantly affect the phenomenology of the H⁺ search.

Original language	English
Pages (from-to)	167-174
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	378
Issue number	1-4
DOIs	https://doi.org/10.1016/0370-2693(96)00388-7
Publication status	Published - 1996 Jun 20
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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@article{4192c45fc30e4ed18ea958a39dc9c914,

title = "QCD corrections to the decay H+ → t{\=b} in the minimal supersymmetric standard model",

abstract = "We present a complete calculation of the script O sign(αs) QCD corrections to the width of the decay H+ → t{\=b} within the Minimal Supersymmetric Standard Model. We find that the QCD corrections are quite important, and that the supersymmetric QCD corrections (due to gluino, {\~t} and {\~b} exchange) can be comparable to or even larger than the standard QCD corrections in a large region of the supersymmetric parameter space. This is mainly due to the effect of large left-right mixings of stop ({\~t}) and sbottom ({\~b}). This could significantly affect the phenomenology of the H+ search.",

author = "A. Bartl and H. Eberl and K. Hidaka and T. Kon and W. Majerotto and Y. Yamada",

note = "Funding Information: The work of Y.Y. was supportedi n part by the Fellowships of the Japan Society for the Promotion of Science and the Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture of Japan, No. 06-1923 and 07-1923. The work of A.B., H.E., and W.M. was supportedb y the “Fonds zur FSrderung der wissenschaftlichen Forschung” of Austria, project no. P10843-PHY.",

year = "1996",

month = jun,

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doi = "10.1016/0370-2693(96)00388-7",

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T1 - QCD corrections to the decay H+ → tb̄ in the minimal supersymmetric standard model

AU - Bartl, A.

AU - Eberl, H.

AU - Hidaka, K.

AU - Kon, T.

AU - Majerotto, W.

AU - Yamada, Y.

N1 - Funding Information: The work of Y.Y. was supportedi n part by the Fellowships of the Japan Society for the Promotion of Science and the Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture of Japan, No. 06-1923 and 07-1923. The work of A.B., H.E., and W.M. was supportedb y the “Fonds zur FSrderung der wissenschaftlichen Forschung” of Austria, project no. P10843-PHY.

PY - 1996/6/20

Y1 - 1996/6/20

N2 - We present a complete calculation of the script O sign(αs) QCD corrections to the width of the decay H+ → tb̄ within the Minimal Supersymmetric Standard Model. We find that the QCD corrections are quite important, and that the supersymmetric QCD corrections (due to gluino, t̃ and b̃ exchange) can be comparable to or even larger than the standard QCD corrections in a large region of the supersymmetric parameter space. This is mainly due to the effect of large left-right mixings of stop (t̃) and sbottom (b̃). This could significantly affect the phenomenology of the H+ search.

AB - We present a complete calculation of the script O sign(αs) QCD corrections to the width of the decay H+ → tb̄ within the Minimal Supersymmetric Standard Model. We find that the QCD corrections are quite important, and that the supersymmetric QCD corrections (due to gluino, t̃ and b̃ exchange) can be comparable to or even larger than the standard QCD corrections in a large region of the supersymmetric parameter space. This is mainly due to the effect of large left-right mixings of stop (t̃) and sbottom (b̃). This could significantly affect the phenomenology of the H+ search.

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VL - 378

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EP - 174

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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