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Gravitino and Goldstino at Colliders

Research paper by Wilfried Buchmuller, Koichi Hamaguchi, Michael Ratz, Tsutomu Yanagida

Indexed on: 18 Mar '04Published on: 18 Mar '04Published in: High Energy Physics - Phenomenology



Abstract

We consider theories with spontaneously broken global or local supersymmetry where the pseudo-goldstino or the gravitino is the lightest superparticle (LSP). Assuming that the long-lived next-to-lightest superparticle (NSP) is a charged slepton, we study several supergravity predictions: the NSP lifetime, angular and energy distributions in 3-body NSP decays. The characteristic couplings of the gravitino, or goldstino, can be tested even for very small masses.