Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-01-15
Phys.Rev.D79:075018,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
32 pages, 11 eps files, version to appear in PRD
Scientific paper
10.1103/PhysRevD.79.075018
We discuss the anomalous magnetic moment of fermion in a realistic SU(3) model of gauge-Higgs unification compactified on an orbifold S^1/Z_2 including Z_2-odd bulk mass for fermions. An operator analysis implies that the anomalous magnetic moment should be finite and predictable, even though higher dimensional gauge theories are non-renormalizable. Our main purpose is to clarify the cancellation mechanism of the UV divergences appearing in various types of Feynman diagrams. The cancellation of divergence turns out to take place between the contributions of the "partners" in the Higgs-like mechanism present in the non-zero Kaluza-Klein modes to form massive gauge bosons. It is also argued that the cancellation may be attributed to the quantum mechanical SUSY hidden in the scenario of gauge-Higgs unification.
Adachi Yuki
Lim Chu S.
Maru Nobuhito
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