Bulk gauge fields in warped space and localized supersymmetry breaking

We consider five dimensional supersymmetric warped scenarios in which theStandard Model quark and lepton fields are localized on the ultraviolet brane,while the Standard Model gauge fields propagate in the bulk. Supersymmetry isassumed to be broken on the infrared brane. The relative sizes of supersymmetrybreaking effects are found to depend on the hierarchy between the infraredscale and the weak scale. If the infrared scale is much larger than the weakscale the leading supersymmetry breaking effect on the visible brane is givenby gaugino mediation. The gaugino masses at the weak scale are proportional tothe square of the corresponding gauge coupling, while the dominant contributionto the scalar masses arises from logarithmically enhanced radiative effectsinvolving the gaugino mass that are cutoff at the infrared scale. While the LSPis the gravitino, the NLSP which is the stau is stable on collider time scales.If however the infrared scale is close to the weak scale then the effects ofhard supersymmetry breaking operators on the scalar masses can becomecomparable to those from gaugino mediation. These operators alter the relativestrengths of the couplings of gauge bosons and gauginos to matter, and giveloop contributions to the scalar masses that are also cutoff at the infraredscale. The gaugino masses, while exhibiting a more complicated dependence onthe corresponding gauge coupling, remain hierarchical and become proportionalto the corresponding gauge coupling in the limit of strong supersymmetrybreaking. The scalar masses are finite and a loop factor smaller than thegaugino masses. The LSP remains the gravitino.Comment: 36 pages, 2 figure