Quantum-Induced Soft Supersymmetry Breaking In Supergravity

TL;DR

This paper calculates one-loop quantum effects on soft supersymmetry breaking terms in supergravity, revealing universal contributions similar to anomaly mediation but also highlighting significant model dependence and potential cancellations.

Contribution

It provides a detailed calculation of quantum contributions to soft terms in supergravity, including universal and model-dependent effects, extending previous anomaly mediation analyses.

Findings

Universal one-loop contributions to gaugino masses and A-terms are identified.

Scalar mass terms are found that differ from previous analyses.

Loop-induced soft terms are highly sensitive to Planck scale physics.

Abstract

We calculate the one-loop quantum contributions to soft supersymmetry breaking terms in the scalar potential in supergravity theories regulated \`a la Pauli-Villars. We find ``universal'' contributions, independent of the regulator masses and tree level soft supersymmetry breaking, that contribute gaugino masses and A-terms equal to the ``anomaly mediated'' contributions found in analyses using spurion techniques, as well as a scalar mass term not identified in those analyses. The universal terms are in general modified -- and in some cases canceled -- by model-dependent terms. Under certain restrictions on the couplings we recover the one-loop results of previous ``anomaly mediated'' supersymmetry breaking scenarios. We emphasize the model dependence of loop-induced soft terms in the potential, which are much more sensitive to the details of Planck scale physics then are the one-loop contributions to gaugino masses. We discuss the relation of our results to previous analyses.