Muon anomalous magnetic moment and penguin loops in warped extra dimensions

M. Beneke; P. Moch; J. Rohrwild

doi:10.1142/S0217751X14440114

Muon anomalous magnetic moment and penguin loops in warped extra dimensions

M. Beneke, P. Moch, J. Rohrwild

Chair of Theoretical Elementary Particle Physics

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7 Scopus citations

Abstract

We describe the computation of the one-loop muon anomalous magnetic moment and radiative penguin transitions in the minimal and custodially protected Randall-Sundrum model. A fully five-dimensional (5D) framework is employed to match the 5D theory onto the Standard Model extended by dimension-six operators. The additional contribution to the anomalous magnetic moment from the gauge-boson exchange contributions is Δ aμ 8.8 (27.2)· 10 ^-11 × (1 TeV/T)², where the first (second) number refers to the minimal (custodially-protected) model. Here 1/T denotes the location of the TeV brane in conformal coordinates, and is related to the mass of the lowest gauge-boson KK excitation by M_KK≈2.35T. We also determine the Higgs-exchange contribution, which depends on the 5D Yukawa structure and the precise interpretation of the localization of the Higgs field near or at the TeV brane.

Original language	English
Article number	1444011
Journal	International Journal of Modern Physics A
Volume	29
Issue number	21
DOIs	https://doi.org/10.1142/S0217751X14440114
State	Published - 20 Aug 2014

Keywords

Anomalous magnetic moment
extra dimensions

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10.1142/S0217751X14440114

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title = "Muon anomalous magnetic moment and penguin loops in warped extra dimensions",

abstract = "We describe the computation of the one-loop muon anomalous magnetic moment and radiative penguin transitions in the minimal and custodially protected Randall-Sundrum model. A fully five-dimensional (5D) framework is employed to match the 5D theory onto the Standard Model extended by dimension-six operators. The additional contribution to the anomalous magnetic moment from the gauge-boson exchange contributions is Δ aμ 8.8 (27.2)· 10 -11 × (1 TeV/T)2, where the first (second) number refers to the minimal (custodially-protected) model. Here 1/T denotes the location of the TeV brane in conformal coordinates, and is related to the mass of the lowest gauge-boson KK excitation by MKK≈2.35T. We also determine the Higgs-exchange contribution, which depends on the 5D Yukawa structure and the precise interpretation of the localization of the Higgs field near or at the TeV brane.",

keywords = "Anomalous magnetic moment, extra dimensions",

author = "M. Beneke and P. Moch and J. Rohrwild",

note = "Funding Information: This work has been supported by the DFG SFB/TR 9 “Computergest{\"u}tzte Theo-retische Teilchenphysik,” the Gottfried Wilhelm Leibniz programme of the Deutsche Forschungsgemeinschaft (DFG), and the DFG cluster of excellence “Origin and Structure of the Universe.” The work of JR is supported by STFC UK.",

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AU - Moch, P.

AU - Rohrwild, J.

N1 - Funding Information: This work has been supported by the DFG SFB/TR 9 “Computergestützte Theo-retische Teilchenphysik,” the Gottfried Wilhelm Leibniz programme of the Deutsche Forschungsgemeinschaft (DFG), and the DFG cluster of excellence “Origin and Structure of the Universe.” The work of JR is supported by STFC UK.

PY - 2014/8/20

Y1 - 2014/8/20

N2 - We describe the computation of the one-loop muon anomalous magnetic moment and radiative penguin transitions in the minimal and custodially protected Randall-Sundrum model. A fully five-dimensional (5D) framework is employed to match the 5D theory onto the Standard Model extended by dimension-six operators. The additional contribution to the anomalous magnetic moment from the gauge-boson exchange contributions is Δ aμ 8.8 (27.2)· 10 -11 × (1 TeV/T)2, where the first (second) number refers to the minimal (custodially-protected) model. Here 1/T denotes the location of the TeV brane in conformal coordinates, and is related to the mass of the lowest gauge-boson KK excitation by MKK≈2.35T. We also determine the Higgs-exchange contribution, which depends on the 5D Yukawa structure and the precise interpretation of the localization of the Higgs field near or at the TeV brane.

AB - We describe the computation of the one-loop muon anomalous magnetic moment and radiative penguin transitions in the minimal and custodially protected Randall-Sundrum model. A fully five-dimensional (5D) framework is employed to match the 5D theory onto the Standard Model extended by dimension-six operators. The additional contribution to the anomalous magnetic moment from the gauge-boson exchange contributions is Δ aμ 8.8 (27.2)· 10 -11 × (1 TeV/T)2, where the first (second) number refers to the minimal (custodially-protected) model. Here 1/T denotes the location of the TeV brane in conformal coordinates, and is related to the mass of the lowest gauge-boson KK excitation by MKK≈2.35T. We also determine the Higgs-exchange contribution, which depends on the 5D Yukawa structure and the precise interpretation of the localization of the Higgs field near or at the TeV brane.

KW - Anomalous magnetic moment

KW - extra dimensions

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JO - International Journal of Modern Physics A

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Muon anomalous magnetic moment and penguin loops in warped extra dimensions

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