Determining the Mass for a Light Gravitino
arXiv:0705.0219 · doi:10.1016/j.physletb.2007.05.063
Abstract
Gauge mediated supersymmetry breaking scenarios with an ultra-light gravitino of mass m_{3/2}=1-10 eV are very interesting, since there is no cosmological gravitino problem. We propose a new experimental determination of the gravitino mass for such an ultra-light gravitino, by measuring a branching ratio of two decay modes of sleptons.
9 pages, 12 figures