Anomaly Mediation from Randall-Sundrum to Dine-Seiberg

TL;DR

This paper revisits the derivation of anomaly mediated supersymmetry breaking, demonstrating the independence of physical soft parameters from the conformal compensator F-term and unifying different formalisms.

Contribution

It introduces a general formalism with an arbitrary F-term, bridging the original and Dine-Seiberg derivations of anomaly mediation, and clarifies the role of thresholds and mass parameters.

Findings

Physical soft parameters are independent of the compensator F-term.

Different formalisms of anomaly mediation yield consistent results.

Threshold effects and small mass parameters influence the superpartner spectrum.

Abstract

In this paper we reconsider the derivation of anomaly mediated supersymmetry breaking. We work in a general formalism where the F-term of the conformal compensator superfield is arbitrary. This allows for a continuous interpolation between the original derivation and a more recent Dine-Seiberg derivation of anomaly mediation. We show that the physical soft parameters are independent of the compensator F-term and results of two formalisms agree. Finally, we discuss the role of supersymmetric and non-supersymmetric thresholds in the effective low energy Lagrangian as well as the effects of explicit small mass parameters (such as mu-term) on the superpartner spectrum.