New (g-2)μ Constraints on Light-Gravitino Models
T. Li, J. Lopez, D. Nanopoulos
Abstract
We show that the gravitino contribution to (g-2)μ is finite in many popular supergravity models, including no-scale supergravity and string and M-theory models. This contribution is greatly enhanced for very light gravitino masses, and leads to new upper bounds on the ratio of the smuon to the gravitino mass.
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