Effective interactions of a light gravitino

Details Effective interactions of a light gravitino Effective interactions of a light gravitino

1998-01-02

arxiv.org/abs/hep-th/9801003v2

Fortsch.Phys.47:325-332,1999

Physics

High Energy Physics

High Energy Physics - Theory

6 A4 pages, no figures, plain LATEX. Talk at the Workshop `Quantum Aspects of Gauge Theories, Supersymmetry and Unification' (

Scientific paper

We review some recent results on the effective interactions of a light gravitino with ordinary particles. In particular, we discuss on a simple example a novel aspect of the low-energy theorems for broken supersymmetry: in the effective lagrangian describing the goldstino couplings to matter, there are terms bilinear in the goldstino that, already at the lowest non-trivial order, are not entirely controlled by the supersymmetry-breaking scale, and introduce additional free parameters. We conclude by mentioning some phenomenological implications, including a lower bound on the gravitino mass from collider data.

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