Higher Derivative Operators as Counterterms in Orbifold Compactifications

Details Higher Derivative Operators as Counterterms in Orbifold Compactifications Higher Derivative Operators as Counterterms in Orbifold Compactifications

2005-08-19

arxiv.org/abs/hep-ph/0508209v1

Mod.Phys.Lett.A21:769-780,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

Contribution to the Conference "Supersymmetry 2005", Durham; 13 pages, LaTeX

Scientific paper

10.1142/S0217732306020147

In the context of 5D N=1 supersymmetric models compactified on S_1/Z_2 or S_1/(Z_2 x Z_2') orbifolds and with brane-localised superpotential, higher derivative operators are generated radiatively as one-loop counterterms to the mass of the (brane or zero mode of the bulk) scalar field. It is shown that the presence of such operators which are brane-localised is not related to the mechanism of supersymmetry breaking considered (F-term, discrete or continuous Scherk-Schwarz breaking) and initial supersymmetry does not protect against the dynamical generation of such operators. Since in many realistic models the scalar field is commonly regarded as the Higgs field, and the higher derivative operators seem a generic presence in orbifold compactifications, we stress the importance of these operators for solving the hierarchy problem.

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