Hypercharged Conformally Sequestered Gauge Mediation

Abstract

The $B\mu /\mu$ solution in GMSB via the hidden sector dynamics is simple and natural. However, it has some obstacles to be physical. To circumvent this situation, we introduce the visible and the hidden branes, each of which has its own U(1) symmetry, in a five dimensional setup. In the bulk we allow Chern-Simons coupling between the visible and the hidden U(1)s which gives an enhancement of the mass of bino. If this gives a considerable contribution to the mass of bino, we can get a proper radiative electro weak symmetry breaking with the boundary conditions, in which $B\mu$ and squared scalar masses are suppressed at the scale, where the hidden sector is integrated out.

jhep style, 10 pages and 4 figures

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