Supersoft Supersymmetry, Conformal Sequestering, and Single Scale Supersymmetry Breaking

TL;DR

This paper explores a supersymmetric model with Dirac gauginos and conformal sequestering, showing how a single fundamental parameter can lead to reduced electroweak fine-tuning even with TeV-scale superpartners.

Contribution

It introduces a framework where supersoft supersymmetry breaking and conformal sequestering combine to cancel dominant electroweak fine-tuning contributions, with only one fundamental mass parameter.

Findings

Electroweak fine-tuning measure can be of order one.

Supersymmetric particles and μ-terms can be in the TeV range.

Cancellation of dominant contributions reduces fine-tuning concerns.

Abstract

Supersymmetric Standard Models (SSMs) with Dirac gauginos have the appealing supersoft property that they only cause finite contributions to scalar masses. Considering gauge mediated SUSY breaking with conformal sequestering and assuming there is one and only one fundamental parameter with dimension mass arising from supersymmetry breaking, we find a cancellation between the dominant terms that contribute to the EWFT. The resulting EWFT measure can be of order one even for supersymmetric particle masses and $\mu$-terms in the TeV range.