AMSB Demystified

TL;DR

This paper offers a field-theoretic reinterpretation of anomaly-mediated supersymmetry breaking, clarifying its physical origin through superconformal anomalies coupling to specific superfields, enhancing understanding over traditional spurion methods.

Contribution

It presents a novel field-theoretic perspective on AMSB, linking superconformal anomalies to the chiral compensator and $U(1)_R$ vector superfield, providing clearer physical insight.

Findings

Reinterprets AMSB via superconformal anomalies and superfields.

Shows supersymmetry breaking arises from vevs of superfield F- and D-terms.

Offers a more physically intuitive framework than spurion-based approaches.

Abstract

We reinterpret anomaly-mediated supersymmetry breaking from a field-theoretic perspective in which superconformal anomalies couple to either the chiral compensator or the $U(1)_R$ vector superfield. As supersymmetry in the hidden sector is spontaneously broken by non-vanishing vacuum expectation values of the chiral compensator F-term and/or the $U(1)_R$ vector superfield D-term, the soft breakdown of supersymmetry emerges in the visible sector. This approach is physically more understandable compared with the conventional approach where the chiral compensator is treated on the same footing as a spurion in gauge-mediated supersymmetry breaking scenario.