Hypercharged Conformally Sequestered Gauge Mediation

TL;DR

This paper proposes a five-dimensional gauge mediation model with branes and Chern-Simons coupling that enhances bino mass, enabling proper electroweak symmetry breaking while addressing issues in traditional GMSB models.

Contribution

Introduction of a 5D setup with branes and Chern-Simons coupling to naturally enhance bino mass in gauge mediation models.

Findings

Enhanced bino mass through Chern-Simons coupling.

Achieved proper electroweak symmetry breaking.

Suppressed Bμ and scalar masses at the hidden sector scale.

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.