Simple and direct communication of dynamical supersymmetry breaking

TL;DR

This paper introduces a simple, calculable model of dynamical supersymmetry breaking that directly couples the MSSM to a hidden sector, ensuring universal sfermion masses and comparable gaugino masses, with implications for flavor and A-terms.

Contribution

It presents a straightforward extension of the 3-2 model that achieves phenomenologically viable supersymmetry breaking with direct MSSM coupling and predictive mass relations.

Findings

Sfermion masses are universal, solving the flavor problem.

Gaugino masses are of the same order as sfermion masses.

The model predicts sizable A-terms depending on free couplings.

Abstract

We present a complete, calculable, and phenomenologically viable model of dynamical supersymmetry breaking. The model is a simple extension of the so called 3-2 model, with gauge group SU(3)xSU(2)xG_SM and the MSSM fields directly coupled to the hidden sector SU(2) vector fields. Sfermion masses are universal, thus solving the supersymmetric flavour problem, and gaugino masses are not suppressed, in fact they are predicted to be of the same order as sfermion masses. Sizeable contributions to the MSSM A-terms can be generated, depending on the size of some free couplings. As a byproduct, we show some properties of a class of models with n pairs of Higgs doublets.