Interactions of a Single Goldstino

Details Interactions of a Single Goldstino Interactions of a Single Goldstino

1998-05-29

arxiv.org/abs/hep-ph/9805512v3

Phys.Lett. B447 (1999) 83-88

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 2 figures, the version to appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(98)01554-8

The single goldstino interaction is given by the goldstino derivative coupling to the supercurrent. In an alternative description, the goldstino couples nonderivatively. We give a simple method to establish the equivalence of the two approaches, valid to all orders in perturbation theory, and for any scattering process involving an arbitrary number of particles, but with a single external goldstino. In the meantime, we find in the nonderivative form of the goldstino interaction a new quartic vertex that has been overlooked, and terms that were included incorrectly in the literature. The phenomenological implication of this new quartic operator is discussed.

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