Anomaly Mediated Gaugino Mass and Path-Integral Measure

Understand

In recent years, there have been controversy concerning the anomaly mediated gaugino mass in the superspace formalism of supergravity.

• In this paper, we reexamine the gaugino mass term in this formalism by paying particular attention to symmetry which controls gaugino masses in supergravity.
• We first discuss super-Diffeomorphism invariance of path-integral measures of charged superfields.
• As we will show, the super-Diffeomorphism invariant measure is not invariant under a super-Weyl transformation, which is the origin of the anomaly mediated gaugino mass.