The muon anomalous magnetic moment in the Randall-Sundrum model

作者：Beneke M^*; Dey P; Rohrwild J

来源：The Journal of High Energy Physics, 2013, 2013(8): 010.

DOI：10.1007/JHEP08(2013)010

• Phenomenology of Field Theories in Higher Dimensions

We calculate the anomalous magnetic moment of the muon in the minimal Randall-Sundrum model with standard model fields in five-dimensional (5D) warped space and a brane-localized Higgs. We use a fully 5D framework to compute the one-loop matching coefficients of the effective theory at the electroweak scale. The extra contribution to the anomalous magnetic moment from the model-independent gauge-boson exchange contributions is
Delta a mu approximate to 8.8 . 10(-11) x (1 TeV/T)(2),
where 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 approximate to 2.5 T. The result constitutes the first complete determination of the gauge-boson contribution to g - 2 and is robust against the variation of the bulk fermion masses and 5D Yukawa coupling. We also determine the strongly model-parameter dependent effect of Higgs-exchange diagrams.

• 出版日期2013-8