Searches for Scalar Top and Bottom Quarks at the Tevatron

TL;DR

This paper reports on searches for supersymmetric scalar top and bottom quarks at the Tevatron collider, setting new exclusion limits in the absence of observed signals.

Contribution

First searches for scalar top and bottom quarks at the Tevatron using 340 pb$^{-1}$ data, providing improved exclusion regions within the minimal supersymmetric standard model.

Findings

No evidence for scalar top or bottom quarks was observed.

New exclusion limits were established for their masses and decay modes.

The results constrain supersymmetric models and guide future searches.

Abstract

Searches for the supersymmetric partners of top and bottom quarks using data up to 340 pb$^{-1}$ taken at the Tevatron $p\bar{p}$ collider are described. We report on searches for scalar top quarks $\tilde{t}$ in the decays $\tilde{t}\to c \tilde{\chi}_1^0$ and $\tilde{t}\to bl\tilde{\nu}$ and for scalar bottom quarks $\tilde{b}$ in the decay $\tilde{b}\to b \tilde{\chi}_1^0$. No evidence for a signal has been found, but improved exclusion regions have been derived in the framework of a generic minimal superymmetric extension of the standard model.