Renormalizable extra-dimensional models

Details Renormalizable extra-dimensional models Renormalizable extra-dimensional models

2004-10-10

arxiv.org/abs/hep-ph/0410142v2

JHEP 0501 (2005) 002

Physics

High Energy Physics

High Energy Physics - Phenomenology

29 pages, 2 eps figures; extra refs added

Scientific paper

10.1088/1126-6708/2005/01/002

Non-Abelian gauge theories may have continuum limits in more than four dimensions, supported by non-trivial ultra-violet fixed points. Moreover, such theories can be expected to be accessible to Wilson's epsilon expansion. We investigate this series for SU(N) Yang-Mills, in particular for the fixed point coupling and critical exponent nu, up to four loops. From the model-building point of view, such theories would be effectively perturbatively renormalizable in the normal way. A particularly attractive possibility is the construction of renormalizable extra-dimensional models of the weak interactions, which have the potential to address the full hierarchy problem. The simplest such gauge-Higgs unification model is however ruled out by a combination of theoretical and phenomenological constraints.

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