Analysis of CP Violation in Neutralino Decays to Tau Sleptons

Abstract

In the minimal supersymmetric standard model, tau sleptons ${\tilde{\tau }}_{1,2}$ and neutralinos ${\tilde{\chi }}_{1,2}^0$ are expected to be among the lightest supersymmetric particles that can be produced copiously at future $e^{+}{e}^{-}$ linear colliders. We analyze $\tilde{\tau }$ pair and ${\tilde{\chi }}_1^0{\tilde{\chi }}_2^0$ production under the assumption $m_{{\tilde{\chi }}_1^0}<m_{{\tilde{\tau }}_1}<m_{{\tilde{\chi }}_2^0}$, allowing the relevant parameters of the SUSY Lagrangian to have complex phases. We show that the transverse and normal components of the polarization vector of the $\tau$ lepton produced in ${\tilde{\chi }}_2^0$ decays offer sensitive probes of these phases.

arXiv commentLaTeX, 30 pages with 10 .eps figures

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