Renormalization group analysis of charged Higgs effects in ϵ′ ϵ for a heavy top quark

Gerhard Buchalla; Andrzej J. Buras; Michaela K. Harlander; Markus E. Lautenbacher; Claudia Salazar

doi:10.1016/0550-3213(91)90116-F

Renormalization group analysis of charged Higgs effects in ϵ′ ϵ for a heavy top quark

Gerhard Buchalla
, Andrzej J. Buras
, Michaela K. Harlander
, Markus E. Lautenbacher
, Claudia Salazar

Chair of Theoretical Elementary Particle Physics

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

22 Scopus citations

Abstract

We perform the first renormalization group analysis of ε{lunate}′ ε{lunate}, ε{lunate} and B⁰-B⁰ mixing in a two-Higgs doublet model including the effects of electroweak penguins. The impact of charged Higgs effects on ε{lunate}′ ε{lunate} can be sizable. Due to additional positive contributions to ε{lunate} and additional negative contributions of Z⁰-penguin diagrams with charged Higgs exchanges to ε{lunate}′, the ratio ε{lunate}′ ε{lunate} is generally substantially smaller than in the standard model. It can become negative at smaller values of m_t {all equal to} O(160 GeV) than found in the standard model.

Original language	English
Pages (from-to)	305-329
Number of pages	25
Journal	Nuclear Physics, Section B
Volume	355
Issue number	2
DOIs	https://doi.org/10.1016/0550-3213(91)90116-F
State	Published - 20 May 1991

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10.1016/0550-3213(91)90116-F

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@article{b41f1cc51033441f807e7abaff4da222,

title = "Renormalization group analysis of charged Higgs effects in ϵ′ ϵ for a heavy top quark",

abstract = "We perform the first renormalization group analysis of ε\{lunate\}′ ε\{lunate\}, ε\{lunate\} and B0-B0 mixing in a two-Higgs doublet model including the effects of electroweak penguins. The impact of charged Higgs effects on ε\{lunate\}′ ε\{lunate\} can be sizable. Due to additional positive contributions to ε\{lunate\} and additional negative contributions of Z0-penguin diagrams with charged Higgs exchanges to ε\{lunate\}′, the ratio ε\{lunate\}′ ε\{lunate\} is generally substantially smaller than in the standard model. It can become negative at smaller values of mt \{all equal to\} O(160 GeV) than found in the standard model.",

author = "Gerhard Buchalla and Buras, \{Andrzej J.\} and Harlander, \{Michaela K.\} and Lautenbacher, \{Markus E.\} and Claudia Salazar",

note = "Funding Information: * Supported in part by the German Bundesministerium fiir Forschung und Technologie under contract 06TM 761. * This has also been noticed in ref. \textbackslash{}[3\textbackslash{}]i n a different context. ** We use the notation of ref. \textbackslash{}[2\textbackslash{}]t hroughout the present paper.",

year = "1991",

month = may,

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doi = "10.1016/0550-3213(91)90116-F",

language = "English",

volume = "355",

pages = "305--329",

journal = "Nuclear Physics, Section B",

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publisher = "Elsevier B.V.",

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T1 - Renormalization group analysis of charged Higgs effects in ϵ′ ϵ for a heavy top quark

AU - Buchalla, Gerhard

AU - Buras, Andrzej J.

AU - Harlander, Michaela K.

AU - Lautenbacher, Markus E.

AU - Salazar, Claudia

N1 - Funding Information: * Supported in part by the German Bundesministerium fiir Forschung und Technologie under contract 06TM 761. * This has also been noticed in ref. \[3\]i n a different context. ** We use the notation of ref. \[2\]t hroughout the present paper.

PY - 1991/5/20

Y1 - 1991/5/20

N2 - We perform the first renormalization group analysis of ε{lunate}′ ε{lunate}, ε{lunate} and B0-B0 mixing in a two-Higgs doublet model including the effects of electroweak penguins. The impact of charged Higgs effects on ε{lunate}′ ε{lunate} can be sizable. Due to additional positive contributions to ε{lunate} and additional negative contributions of Z0-penguin diagrams with charged Higgs exchanges to ε{lunate}′, the ratio ε{lunate}′ ε{lunate} is generally substantially smaller than in the standard model. It can become negative at smaller values of mt {all equal to} O(160 GeV) than found in the standard model.

AB - We perform the first renormalization group analysis of ε{lunate}′ ε{lunate}, ε{lunate} and B0-B0 mixing in a two-Higgs doublet model including the effects of electroweak penguins. The impact of charged Higgs effects on ε{lunate}′ ε{lunate} can be sizable. Due to additional positive contributions to ε{lunate} and additional negative contributions of Z0-penguin diagrams with charged Higgs exchanges to ε{lunate}′, the ratio ε{lunate}′ ε{lunate} is generally substantially smaller than in the standard model. It can become negative at smaller values of mt {all equal to} O(160 GeV) than found in the standard model.

UR - https://www.scopus.com/pages/publications/0001538418

U2 - 10.1016/0550-3213(91)90116-F

DO - 10.1016/0550-3213(91)90116-F

M3 - Article

AN - SCOPUS:0001538418

SN - 0550-3213

VL - 355

SP - 305

EP - 329

JO - Nuclear Physics, Section B

JF - Nuclear Physics, Section B

IS - 2

ER -

Renormalization group analysis of charged Higgs effects in ϵ′ ϵ for a heavy top quark

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