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arXiv · 0705.0219

Determining the Mass for a Light Gravitino

K. Hamaguchi·S. Shirai·T. T. Yanagida
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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.

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K. Hamaguchi, S. Shirai, T. T. Yanagida. 2007-05-02. Determining the Mass for a Light Gravitino. https://doi.org/10.1016/j.physletb.2007.05.063

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