New contribution to dimension-five operators on proton decay in anomaly mediation scenario

In supergravity, effective superpotential relevant to dimension-five operators on proton decay processes also leads to supersymmetry-breaking terms among sfermions, dimension-four operators. These dimension-four operators induce the dimension-five operators through 1-loop diagrams dressed by gauginos. We find that, in a class of models with the anomaly mediation, the 1-loop contributions can be comparable to those at the tree level. Therefore, such operators have a great impact on the proton decay rate. Depending on a universal phase of gaugino masses and soft mass spectrum, the proton decay rate can be enhanced or suppressed