Higher dimensional operators and their effects in (non)supersymmetric models

Details Higher dimensional operators and their effects in (non)supersymmetric models Higher dimensional operators and their effects in (non)supersymmetric models

2007-08-20

arxiv.org/abs/0708.2501v1

Mod.Phys.Lett.A23:711-720,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Based on talk presented at "Supersymmetry 2007"; 11 pages, LaTeX

Scientific paper

10.1142/S0217732308026704

It is shown that a 4D N=1 softly broken supersymmetric theory with higher derivative operators in the Kahler or the superpotential part of the Lagrangian and with an otherwise arbitrary superpotential, can be re-formulated as a theory without higher derivatives but with additional (ghost) superfields and modified interactions. The importance of the analytical continuation Minkowski-Euclidean space-time for the UV behaviour of such theories is discussed in detail. In particular it is shown that power counting for divergences in Minkowski space-time does not always work in models with higher derivative operators.

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