Quasi-infra-red fixed points and renormalisation group invariant trajectories for non-holomorphic soft supersymmetry breaking

TL;DR

This paper investigates how non-holomorphic soft-breaking terms influence the quasi-infra-red fixed points and RG-invariant trajectories in the MSSM, providing insights into their effects on supersymmetry breaking predictions.

Contribution

It introduces the concept of RG-invariant trajectories for non-holomorphic terms and analyzes their impact on MSSM fixed points and soft-breaking parameter predictions.

Findings

Non-holomorphic terms modify the quasi-infra-red fixed point predictions.

Existence of RG-invariant trajectories for non-holomorphic terms.

Holomorphic spurion approach explains the invariance.

Abstract

In the MSSM the quasi-infra-red fixed point for the top-quark Yukawa coupling gives rise to specific predictions for the soft-breaking parameters. We discuss the extent to which these predictions are modified by the introduction of additional ``non-holomorphic'' soft-breaking terms. We also show that in a specific class of theories there exists an RG-invariant trajectory for the ``non-holomorphic'' terms, which can be understood using a holomorphic spurion term.