Study of Scalar Top Quarks at a Future e+e- Linear Collider

Details Study of Scalar Top Quarks at a Future e+e- Linear Collider Study of Scalar Top Quarks at a Future e+e- Linear Collider

1999-11-13

arxiv.org/abs/hep-ph/9911345v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

The scalar top discovery potential has been studied with a full-statistics background simulation for sqrt(s) = 500 GeV and L = 500 fb-1. The simulation is based on a fast and realistic simulation of a TESLA detector. The large simulated data sample allowed the application of an Iterative Discriminant Analysis (IDA) which led to a significantly higher sensitivity than in previous studies. The effects of beam polarization on signal efficiency and individual background channels are studied using separate optimization with the IDA for both polarization states. The beam polarization is very important to measure the scalar top mixing angle and to determine its mass. Simulating a 180 GeV scalar top at minimum production cross section, we obtain Delta(m) = 1 GeV and Delta(cos(theta)) = 0.009.

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