Anomaly mediation in supergravity theories

TL;DR

This paper investigates how anomalies influence supersymmetry-breaking parameters in supergravity, deriving a comprehensive one-loop formula for anomaly-induced gaugino masses and highlighting the dependence on high-energy details.

Contribution

It provides a supersymmetric expression for anomaly-induced terms and a complete one-loop formula for gaugino masses in supergravity theories.

Findings

Gaugino masses receive contributions from multiple anomalies.

Local counterterms can cancel anomaly effects, affecting predictability.

Full high-energy theory is necessary for precise gaugino mass predictions.

Abstract

We consider the effects of anomalies on the supersymmetry-breaking parameters in supergravity theories. We construct a supersymmetric expression for the anomaly-induced terms in the 1PI effective action; we use this result to compute the complete one-loop formula for the anomaly-induced gaugino mass. The mass receives contributions from the super-Weyl, Kahler, and sigma-model anomalies of the supergravity theory. We point out that the anomaly-mediated gaugino mass can be affected by local counterterms that cancel the super-Weyl-Kahler anomaly. This implies that the gaugino mass cannot be predicted unless the full high-energy theory is known.