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arXiv · 1410.7025

Sneaky light stop

Till Eifert·Benjamin Nachman
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Abstract

A light supersymmetric top quark partner (stop) with a mass nearly degenerate with that of the Standard Model (SM) top quark can evade direct searches. The precise measurement of SM top properties such as the cross-section has been suggested to give a handle for this `stealth stop' scenario. We present an estimate of the potential impact a light stop may have on top quark mass measurements. The results indicate that certain light stop models may induce a bias of up to a few GeV, and that this effect can hide the shift in, and hence sensitivity from, cross-section measurements. The studies make some simplifying assumptions for the top quark measurement technique, and are based on truth-level samples.

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Till Eifert, Benjamin Nachman. 2014-10-26. Sneaky light stop. https://doi.org/10.1016/j.physletb.2015.02.039

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