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arXiv · 0903.0714

Measuring tau-polarisation in Neutralino2 decays at the LHC

Till Nattermann·Klaus Desch·Peter Wienemann·Carolin Zendler
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Abstract

We show how the sum of the two average tau polarisations in the decay chain chi20 -> stau1 tau -> tau tau chi10 in minimal supersymmetry with conserved R-parity can be measured at the LHC. This is accomplished by exploiting the polarisation dependence of the visible di-tau mass spectrum. Such a measurement provides information on the couplings of the involved SUSY particles and allows a more precise determination of the di-tau mass endpoint. If different tau decay modes can be distinguished, the polarisation and endpoint measurement can be improved even further.

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Till Nattermann, Klaus Desch, Peter Wienemann, Carolin Zendler. 2009-03-29. Measuring tau-polarisation in Neutralino2 decays at the LHC. https://doi.org/10.1088/1126-6708%2F2009%2F04%2F057

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