Determining the Mass for a Light Gravitino
High Energy Physics - Phenomenology
2008-11-26 v1
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.
Keywords
Cite
@article{arxiv.0705.0219,
title = {Determining the Mass for a Light Gravitino},
author = {K. Hamaguchi and S. Shirai and T. T. Yanagida},
journal= {arXiv preprint arXiv:0705.0219},
year = {2008}
}