Triangulating an exotic T quark

TL;DR

This paper broadens the search for an exotic T quark by combining multiple decay mode analyses, establishing strong mass bounds across all possible decay branching ratios.

Contribution

It introduces a comprehensive method to set limits on the T quark by integrating various decay channels and reinterpretation of existing searches.

Findings

Mass bounds range from 415 GeV to 557 GeV at 95% confidence level.

Strong constraints across the entire decay branching ratio space.

Unified analysis improves sensitivity over individual channel searches.

Abstract

Limits on an exotic heavy quark $T$ are broadly generalized by considering the full range of $T\rightarrow Wb, th$ or $tZ$ branching ratios. We combine results of specific $T\rightarrow tZ$ and $T\rightarrow Wb$ searches with limits on various combinations of decay modes evaluated by re-interpreting other searches. We find strong bounds across the entire space of branching ratios, ranging from $m_T > 415$ GeV to $m_T > 557$ GeV at 95% confidence level.