New Derivation of Anomaly-Mediated Gaugino Mass in the Higher Derivative Regularization Method

TL;DR

This paper applies higher derivative regularization to supergravity to derive gaugino mass formulas diagrammatically, including known anomaly mediation results and new terms involving the Kahler potential.

Contribution

It introduces a direct diagrammatic derivation method for gaugino masses in supergravity using higher derivative regularization, revealing additional Kahler potential-dependent terms.

Findings

Derived gaugino mass formulas diagrammatically

Included new terms depending on the Kahler potential

Confirmed known anomaly mediation results

Abstract

The technique of higher derivative regularization is applied to the Super-Weyl-Kahler anomaly in supergravity coupled with chiral matters and gauge multiplet. Our method makes it possible to derive directly and diagrammatically the formulae for the gaugino mass (in the Abelian case). Our procedure is applied to derivation of not only the mass formulae known in the anomaly mediation scenario, but also additional terms that depend on the Kahler potential.