Tau-Universality Violation with Light Neutralinos

Details Tau-Universality Violation with Light Neutralinos Tau-Universality Violation with Light Neutralinos

1995-07-06

arxiv.org/abs/hep-ph/9507252v2

Phys.Rev. D53 (1996) 1425-1428

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, LATEX, 3 figures (hard copies of figures available from the Authors on request)

Scientific paper

10.1103/PhysRevD.53.1425

In a supersymmetric model with the lightest supersymmetric particle (LSP) $\chi$ in the range of a few hundred MeV's, the decay $\tau {\longrightarrow} \mu \chi \chi$ is going to be allowed. We investigate the departure from tau-universality caused by this decay. It is found that the universality violation in this way can be greater than both non-universal electroweak radiative corrections and supersymmetric one-loop corrections over a considerable region of the parameter space allowed by experiments so far. Thus it suggests a method of constraining the parameter space with light LSP's using data from tau-factories.

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