Tau polarization in SUSY cascade decays at LHC

Abstract

We explore how the polarization of the tau leptons in the cascade decay $\tilde{q}\to q\tilde{\ddot{I}}{‡}_2^0\to q\ddot{I}„\tilde{\ddot{I}}„\to q\ddot{I}„\ddot{I}„\tilde{\ddot{I}}{‡}_1^0$ can be exploited to study mixing properties of neutralinos and staus. We present details of the analysis including experimental effects such as transverse momentum cuts for the $\ddot{I}„\to \ddot{I}€\hat{I}½$ decay mode, and show that the di-pion invariant mass distribution provides valuable information on their properties.

Submitted for the SUSY07 proceedings, 4 pages, LaTeX, 2 axodraw figures + 4 eps figures