A Note on Gaugino Masses in Kaluza-Klein/Radion Mediated SUSY Breaking

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  • 16 January 2001
Abstract
We review the equivalence of two ``approaches'' to study theories with gauge fields in extra spatial dimensions, namely the ``4D'' approach (with KK states) and the ``5D'' approach (with matching to the 4D theory at the compactification scale). In particular, we reiterate that there are two different ``power-law scalings'' of ``effective'' gauge couplings. In a supersymmetric framework with SUSY breaking in the radius modulus, i.e., the field which fixes the size of the extra dimensions, these two approaches seem to give gaugino masses at loop level (hep-ph/0008069) and tree-level (hep-ph/0008103), respectively. We show explicitly how this ``discrepancy'' can be resolved.

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